Emergency Operating Means Patents (Class 292/21)
  • Patent number: 10647182
    Abstract: The present invention discloses a window, comprising a window panel that has a glass. The window panel is latched at the first latching position when the window panel is at a fully closed position, and is latched at the second latching position when the window panel is at a fully open position.
    Type: Grant
    Filed: September 17, 2017
    Date of Patent: May 12, 2020
    Inventor: Kamrouz Farhadi
  • Patent number: 10435927
    Abstract: Latch mechanisms adapted to prevent unauthorized displacement of a latch bolt from an extended, locked position to a retracted, unlocked position. The latch mechanisms prevent the failure of a latch bolt of one latch mechanism to return to an extended lock position from interfering with the ability of a latch bolt of an inter-related latch mechanism from being able to return to an extended, locked position. Further embodiments provide a mounting bracket mounted to a door to allow the associated latch mechanism to be indirectly secured to the door. Additionally, the mounting bracket may have a plurality of mounting orifices that allow the mounting bracket to be used with a wide range of latch mechanisms, as well as provide adjustable attachment of the latch mechanism to the mounting bracket.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: October 8, 2019
    Assignee: Schlage Lock Company LLC
    Inventors: Paul Raymond Arlinghaus, Mohammed Maksood Ali, Jonah M. Pattar, Kemparaju Putaswamy, Sushanth Anand Rao Kondi, Matthew Scott Graham, Subashchandra Rai, Keshav Tantri
  • Patent number: 10415271
    Abstract: A latch mechanism having a latch apparatus that is pivotally displaced about a latch axis and a cam device is that pivotally displaced along a transverse cam axis. The cam device is configured to operably engage the latch apparatus so as to at least assist in securing the latch apparatus in a locked position. When the latch apparatus is to be displaced to an unlocked position, the cam device may be pivoted about the transverse cam axis to a position in which the cam device does not impede with the pivotal displacement of the latch apparatus. The latch apparatus may also be configured to prevent the pivotal displacement of the cam device when the latch apparatus is in the unlocked position. According to other embodiments, the latch apparatus may be pivotally displaced about a transverse latch axis by the displacement of a latch link.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: September 17, 2019
    Assignee: Schlage Lock Company LLC
    Inventor: Matthew S Graham
  • Patent number: 10246906
    Abstract: A method of mounting an electronic door lock on a door includes: a manual operation to rotate a protrusion of a rotational actuator to initially press a switch; and an operating procedure implemented by the electronic lock for determining a correct mounting direction of the electronic door lock. The operating procedure includes controlling, in response to a signal sent by the switch that is initially pressed, a driving unit to rotate the protrusion in a direction from the initially pressed switch to the other initially un-pressed switch and to drive a latch to move from an unlatched position toward a latched position, followed by stopping and subsequently controlling the driving unit to rotate the protrusion in a reverse direction and to drive the latch to move toward the unlatched position.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: April 2, 2019
    Assignee: Tong Lung Metal Industry Co., LTD.
    Inventors: Chen-Ming Lin, Tung-Yi Ho
  • Patent number: 10208507
    Abstract: A center slide assembly for a multi-point exit device. Upper and lower spool assemblies may be displaced from first positions to second positions along an inner region of a center slide. The displacement of the spool assemblies may displace upper and lower pull cables so as to retract latch mechanisms from extended positions to retracted positions. A first latching pin may be displaced, along with the displacement of the upper spool assembly, along an abutment surface of a tilting link so as to pivotally displace the tilting link from an unlocked position to a locked position. Displacement of the lower spool assembly may displace a second latching pin to a position wherein the second latching pin may be received and retained within a jog of the tilting link when the tilting link is in the locked position, which may thereby retain the associated latch mechanism in the retracted position.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: February 19, 2019
    Assignee: Schlage Lock Company LLC
    Inventors: Sushanth Anand Rao Kondi, Mohammed Maksood Ali, Kemparaju Putaswamy, Michael D. Coleman, Matthew S. Graham
  • Patent number: 10145153
    Abstract: A closing element for a motor vehicle, including an opening mechanism, and a handling element for the closing element actively connected to the opening mechanism such that the closing element can be moved for the purpose of opening. The closing element includes a locking mechanism for locking and/or unlocking the opening mechanism. The locking mechanism can be actuated by a closing system, in particular for the authorization of access to the motor vehicle. A coupling mechanism is provided for interacting with the locking mechanism and/or with the opening mechanism in the manner of an emergency release. The coupling mechanism can be actuated by an actuator. For the operation of the actuator a separate energy storage device is provided that can be used on demand.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: December 4, 2018
    Assignee: Marquardt GmbH
    Inventors: Martin Faigle, Mario Reger, Heinrich Wiens
  • Patent number: 10094142
    Abstract: A latch mechanism having an adjustment mechanism that adjusts the distance to which a latch bolt extends into a mating recess. The adjustment mechanism may include a driver component and a driven component. Rotation of the driver component about a first axis may displace the driven component, thereby causing the position of the latch bolt to be adjusted along a second axis that is non-parallel to the first axis. According to certain embodiments, the first axis is perpendicular to the second axis. The latch mechanism may also include an inner housing that is displaced as the latch bolt is extended into, and retracted from, a mating recess in an adjacent structure. Further, the position of the inner housing may remain generally static as the position of the latch bolt is adjusted along the second axis via operation of the adjustment mechanism.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: October 9, 2018
    Assignee: Schlage Lock Company LLC
    Inventors: Sushanth Anand Rao Kondi, Mohammed Maksood Ali
  • Patent number: 10030411
    Abstract: A damping device for an exit device that is configured to resist high velocity movement a latch assembly relative to a baseplate assembly. Pivotal displacement of a bell crank during typical operation of the exit device may cause a protrusion of the bell crank to exert a pulling force on control linkage element that is coupled to a connection link of a latch assembly and a spring damper element of the damper device, thereby operating the latch assembly while also generally by-passing the damping effect of the damping device. When high velocity movement is imparted on an entryway device associated with the exit device, the damper device resists high velocity movement of the latch assembly relative to the baseplate assembly, thereby at least attempting to prevent the latch assembly from moving independently of the baseplate assembly so as to prevent unlatching of a latch of the latch assembly.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: July 24, 2018
    Assignee: Schlage Lock Company LLC
    Inventors: Michael D. Coleman, John Snodgrass, Ryan D. Hartman
  • Patent number: 9688379
    Abstract: An actuation device for opening an emergency exit flap of a cockpit door is provided. The actuation device comprises a support structure, at least two securing elements, an actuation element and a deflection mechanism. The support structure is configured so as to be fastened to the emergency exit flap. The securing elements are integrated into the support structure and are configured so as to fasten the actuation device, and thus the emergency exit flap, to the cockpit door. The actuation element is connected to the support structure. Therein, the deflection mechanism connects the securing elements to the actuation element in such a way that a force which is exerted on the actuation element is diverted in such a way that the securing elements are released from the cockpit door.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: June 27, 2017
    Assignee: AIRBUS OPERATIONS GMBH
    Inventors: Maik Koch, Matthias Breuer
  • Patent number: 9435141
    Abstract: A panic exit door lock includes an inner cylinder seat. A shield is formed on the inner cylinder seat and includes a window. A driving block is pivotably connected to an actuating block operably connected to an outer lock core. The driving block includes a sleeve portion mounted around the actuating block. A flange is formed on the sleeve portion and is operably connected to a limiting member. An indicator member is pivotably connected to the inner cylinder seat and includes an indicator having a first portion indicating the limiting member is in a release position in which rotation of a handle retracts a latch and a second portion indicating the limiting member is in a blocking position in which the handle can not be rotated to retract the latch. One of the first and second portions is aligned with the window to indicate the position of the limiting member.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: September 6, 2016
    Assignee: I-Tek Metal Mfg. Co., Ltd.
    Inventor: Hung-Jen Tien
  • Publication number: 20140265355
    Abstract: A latch assembly includes a latch having a body. A stop having a lower melting point is received in an engagement hole of the body. An ear is pivotable between a storage position in a transverse groove of the body and a blocking position partially extending out of the transverse groove. A pressing pin is slideably received in a longitudinal hole in the body. The ear is located in the storage position when the pressing pin is in a non-pressing position, allowing pivotable movement of the latch between a latching position and an unlatching position. When the latch is in the latching position and the ear is in the storage position, if the stop is melted by heat, the pressing pin is moved from the non-pressing position to the pressing position and pivots the ear to the blocking position, retaining the latch in the latching position.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Inventor: Hung-Jen Tien
  • Patent number: 8590350
    Abstract: A locking mechanism for the situation-dependent authorized admission or access to any casing and the protection of the casing against misuse of its contents is disclosed. The locking mechanism comprises at least one rotatable locking member (1) and at least one latch member (2) which can be unlocked by the rotatable locking member (1). In case of an emergency the latch member (2) is accessible also through a breakable barrier (3) and can be manually moved after the barrier (3) has been irreversibly destroyed.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: November 26, 2013
    Assignee: medic assist GmbH & Co. KG
    Inventor: David G. Clausen
  • Patent number: 8544896
    Abstract: A stop device (60) includes a stop (61) mounted to an inner face (11A) of a door frame (11). The stop (61) includes a wing (78) having a catch (86) with a stop face (88). A limiting member (92) is mounted to the wing (78) and releasably engaged with a latch (38) of a panic exit door lock (2) mounted to a door (1) that is pivotably mounted to the door frame (11). An engaging member (108) is fixed to the door (1) and includes a tongue (116). The tongue (116) is located between the inner face (11A) of the door frame (11) and the catch (86) when the door (1) is in a closed position. When the door (1) deforms and moves away from the inner face (11A) of the door frame (11), the tongue (116) abuts the stop face (88) of the catch (86), preventing the latch (38) from disengaging from the limiting member (92) to prevent opening of the deformed door (1).
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: October 1, 2013
    Inventor: Ming-I Liu
  • Patent number: 8474290
    Abstract: An improved locking handle and power module assembly provides continued ability to open and close a truck cap or tonneau cover from within or without, and presents an enclosed mechanism to prevent obstruction or jamming. A release handle is provided to permit unlatching of a latch mechanism operated by the locking handle without regard to whether the locking handle is locked or not.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: July 2, 2013
    Assignee: PiOptima, Inc.
    Inventors: David Lee Terhaar, David Jay Terhaar
  • Patent number: 8459701
    Abstract: A differential pressure-controlled locking mechanism (10) comprises a housing (12), as well as a first pressure chamber (14) which is arranged in the housing (12) and which is connectable to a first ambient zone. A second pressure chamber, arranged in the housing (12), is connectable to a second ambient zone and is separated from the first pressure chamber (14) by a mobile separating device (18). The separating device (18) is in an inactive position when the pressure in the first pressure chamber (14) is equal to the pressure in the second pressure chamber. Conversely, the separating device (18) is movable from its inactive position into a differential pressure position when a predetermined differential pressure acts on the separating device (18). An actuation element (22), which is held in a first position by the separating device (18) when the separating device (18) is in its inactive position, is movable into a second position when the mobile separating device (18) is in its differential pressure position.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: June 11, 2013
    Assignee: Airbus Operations GmbH
    Inventor: Maik Szarszewski
  • Patent number: 8267440
    Abstract: A lock for a door includes a latch (128) to which an end of a connecting member (46) is operably coupled. A draw rod (48) is securely mounted to the connecting member (46) to move therewith. A base (32) is fixed to the door, and a slide (42) is slideably mounted to the base (32) in the vertical direction. An adjusting block (44) is fixed to the draw rod (48) to move therewith. An adjusting screw (446) is rotatably extended through the slide (42) and threadedly engaged with the adjusting block (44) so that movement of the slide (42) in the vertical direction causes movement of the adjusting block (44) and the connecting member (46) in the vertical direction and of the latch (128) between locking and unlocking positions. Rotation of the adjusting screw (446) causes movement of the adjusting block (44) and the connecting device (40) in the vertical direction to adjust the locking position of the latch (128) relative to the door (10).
    Type: Grant
    Filed: January 18, 2010
    Date of Patent: September 18, 2012
    Assignee: I-Tek Metal Mfg. Co., Ltd.
    Inventor: Chun-Meng Shen
  • Patent number: 8267441
    Abstract: An operating device for a lock includes a mounting plate mounted to an outer side of a door. A frame is fixed in a receiving space of the door. A push member includes a push section operably connected to a latch. The push member further includes a pivotal section having a pivot hole and a sliding groove. A first pivot extends through the pivot hole of the pivotal section and the frame. A second pivot extends through the frame and is slideably received in the sliding groove of the pivotal section. A lever includes a lug received in the receiving space. The lug has a pin hole through which the second pivot extends. When the lever pivots from an upper position to a lower position about a pivot axis defined by the second pivot, the push member pivots about a pivot axis defined by the first pivot for unlocking operation.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: September 18, 2012
    Assignee: I-Tek Metal Mfg. Co., Ltd.
    Inventor: Hsi-Ting Lin
  • Publication number: 20120161453
    Abstract: A closure system for emergency release of a motor vehicle cavity that is closed with a lid of a trunk compartment, which comprises, in a lock on the trunk side, a rotary latch arranged such that it can pivot about a second axis of rotation, which latch is held securely in a closed position of the lid via a detent pawl arranged such that it can pivot about a first axis of rotation, and a catch hook associated with the rotary latch, wherein a striker is located on the lid side that stands in operative connection with the rotary latch in the closed position, in that the rotary latch locks the striker with respect to a lock housing, wherein the lid is temporarily captured and held in an intermediate position by the catch hook, via the striker, after deactivation of the locking of the rotary latch.
    Type: Application
    Filed: December 23, 2011
    Publication date: June 28, 2012
    Inventors: Florian Zysk, Joachim Schuetz
  • Patent number: 8056941
    Abstract: A door locking device for a door cooperating with a door frame includes a cylinder lock, at least one elongated bolt, and an emergency unlocking mechanism. The elongated bolt is adapted to move linearly to engage to and disengage from the door frame. A transmission including an operating wheel translates circular motion of a rotor of the cylinder lock to a linear motion of the elongated bolt. The emergency unlocking mechanism includes a gear arm connected to a handle and adapted to turn the operating wheel when the handle is turned, disengaging the elongated bolt from the door frame.
    Type: Grant
    Filed: December 18, 2010
    Date of Patent: November 15, 2011
    Assignee: Homegate Ltd
    Inventors: Erez Segev, Henk Schaer
  • Patent number: 8011702
    Abstract: An outer operational device includes a cover mounted to a side of a door. An actuating member is mounted in the cover and includes an end engaged with a handle to rotate therewith. A sliding member is slideably received in the cover and operably connected to the actuating member, so that the sliding member slides when the actuating member rotates. A limiting member is pivotably received in the cover between a blocking position not allowing movement of the sliding member and a release position allowing movement of the sliding member. The handle is rotatable when the limiting member is in the release position. The handle is not rotatable when the limiting member is in the blocking position. A key-operable lock core is operably connected to the actuating member, so that the limiting member can be moved to the blocking position to provide a burglarproof function.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: September 6, 2011
    Assignee: I-Tek Metal Mfg. Co., Ltd.
    Inventors: Hung-Jen Tien, Chen-Wei Huang
  • Publication number: 20110140460
    Abstract: A door locking device for a door cooperating with a door frame includes a cylinder lock, at least one elongated bolt, and an emergency unlocking mechanism. The elongated bolt is adapted to move linearly to engage to and disengage from the door frame. A transmission including an operating wheel translates circular motion of a rotor of the cylinder lock to a linear motion of the elongated bolt. The emergency unlocking mechanism includes a gear arm connected to a handle and adapted to turn the operating wheel when the handle is turned, disengaging the elongated bolt from the door frame.
    Type: Application
    Filed: December 18, 2010
    Publication date: June 16, 2011
    Applicant: HOMEGATE LTD.
    Inventors: Erez Segev, Henk Schaer
  • Patent number: 7896407
    Abstract: Auxiliary safety module for doors provided with an anti-panic opening device, comprising, a rotating locking member movable between an extracted position and a recessed position, a first elastic element tending to maintain the locking member in its extracted position, a cursor movable between a first position and a second position, a transmission mechanism operatively associated to the cursor and to the locking member and arranged to establish a univocal correlation between the positions of the cursor and of the locking member, so that when the cursor is in its first position, the locking member is in the extracted position and when the cursor is in the second position, the locking member is in the recessed position, a movable feeler having a projecting portion and a retaining portion which co-operates with the cursor, the feeler being movable between an engaged position and a disengaged position, a second elastic element associated to the feeler and tending to maintain the feeler in said engaged position, wh
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: March 1, 2011
    Assignee: Savio S.p.A.
    Inventor: Aimone Balbo Di Vinadio
  • Patent number: 7823342
    Abstract: A system and method which provides a means to install a hurricane shutter panel in a manner which enables release of the panel from the inside of the structure, thus providing means of egress through the opening on which the panel is installed. There are four preferred embodiments of the invention to correspond with the four primary means for installing hurricane shutter panels; namely angle track, F-Track, direct mount systems using wall anchors and direct mount systems using direct mount studs permanently mounted into a structure. The various embodiments require little or no modifications to the components of the various industry standard installation systems. The invention can be used with new installations or adapted to existing installations.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: November 2, 2010
    Assignee: PanelScape, LLC
    Inventors: Philip Van Horn Steel, Paul J. Lagassey
  • Patent number: 7818984
    Abstract: An electronic door locking apparatus having a mortise lock including dead bolt and latch bolt installed therein, which is able to easily open a door from the outside by inserting a metal card having a magnet installed inside if a power source such as a dry battery is not supplied or if the locking apparatus is not useable due to other mechanical defects, and also able to perform a lock function since a dead bolt is locked if a door handle of an outer unit is rotated upwards when there are defects in a driving motor or electronic components.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: October 26, 2010
    Assignee: Keicho Hightech, Inc.
    Inventor: Moon Sung Hwang
  • Publication number: 20100066101
    Abstract: A connecting device (40) for a concealed-type latch of a lock for a panic exit door includes a connecting member (46) having an end (464) operably coupled to a latch (128). A draw rod (48) includes an end (484) pivotably coupled to the other end (462) of the connecting member (46) and pivotable between a first position parallel to the connecting member (46) and a second position perpendicular to the connecting member (46). The connecting device (40) can be installed via an end opening (104) in a top or bottom edge of a door (10) into an interior space (102) of the door (10) with the draw rod (48) in the first position. When the draw rod (48) reaches a side opening (106) of the door (10), it is pivoted to the second position for coupling with a follower device (30) of the lock.
    Type: Application
    Filed: September 17, 2008
    Publication date: March 18, 2010
    Inventor: Chun-Meng Shen
  • Patent number: 7634927
    Abstract: A panic exit door lock includes a cover (20) mounted to an outer side (10b) of a door (10). A sliding member (34) is slideably received in the cover (20) and operably connected to a latch (12). A handle (24) is pivotably mounted to the cover (20) and operably connected to the sliding member (34) such that rotation of the handle (24) causes sliding of the sliding member (34) to move the latch between an extended position and a retracted position. A limiting member (32) is pivotably received in the cover (20) between a blocking position not allowing movement of the sliding member (34) and a release position allowing movement of the sliding member (34). An inner lock core (54) and an outer lock core (270) are respectively mounted to an inner side (10a) and the outer side (10b) of the door (10). Either of the inner and outer lock cores (54, 270) can be rotated by a key to move the limiting member (32) between the blocking position and the release position.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: December 22, 2009
    Assignee: I-Tek Metal Mfg. Co., Ltd.
    Inventor: Hung-Jen Tien
  • Patent number: 7578475
    Abstract: An apparatus, system and method including a latching device for displaceably retaining a panel relative to a frame. The latching device includes at least a bolt which is carried on the latching device and is operatively associated with the panel to prevent disengagement of the panel. The latching device includes at least one pressure responsive device operatively coupled to the bolt to retain the bolt in a desired position and release the bolt when a predetermined pressure differential occurs relative to two, generally opposite, sides of the panel or when a pressure decrease occurs on one side of the panel.
    Type: Grant
    Filed: September 13, 2004
    Date of Patent: August 25, 2009
    Assignee: Hartwell Corporation
    Inventors: John D. Pratt, Timothy S. Rozema, Frank T. Jackson, Sr., William Bourne, Manuel Andres Hernandez
  • Patent number: 7484391
    Abstract: A door lock system for enclosures is provided which includes a screw drive mechanism releasably mounted on a back plate member and coupled via threads to a threaded locking member to linearly drive the locking member to engage with a receptor on an enclosure frame to lock the enclosure. A controller unit has an integrated circuit configured to control the operation of the screw drive mechanism and report the status of the door to a central location. A position switch is used to indicate whether the door is open or closed so that the controller unit can automatically engage the screw drive mechanism to lock the door after a preset time delay. A keypad allows a user to enter a code to unlock the door. A radio in the controller unit permits wireless communication to report status and to allow central command control over the doors.
    Type: Grant
    Filed: June 18, 2005
    Date of Patent: February 3, 2009
    Inventor: Gregory B. Moore
  • Publication number: 20080277946
    Abstract: The invention provides an assembly (20) for release of an element (8) such as a hatch. The assembly (20) includes first means such as a peg (28) moveable between a first position in which the first means (28) restricts full release of the element (8) and a second position in which the first means (28) does not restrict full release of the element (8), and second means, such as shape memory alloy wire (32) which is adapted to contract when activated to move the first means (28) from the second position to the first position. Optionally, the assembly (20) includes third means, such as shape memory alloy wire (34) which is adapted to contract when activated to move the first means (28) from the first position to the second position. The assembly (20) is useful for testing oxygen release apparatus in aircraft.
    Type: Application
    Filed: September 20, 2005
    Publication date: November 13, 2008
    Applicant: Telezygology, Inc.
    Inventors: Dickory Rudduck, Lee David Blattman, Grenfell Saxon Rudduck
  • Patent number: 7097240
    Abstract: A locking mechanism is described that releasably locks at least two objects together. The locking mechanism allows one of the objects to be rotatably connected to the other, allowing for a variety of uses. The rotatability and releasability of the locking mechanism allows several locking mechanisms to be used together as an escape hatch system, particularly for use in race vehicles. The locking mechanism has uses beyond the escape hatch system and is applicable to doors, cover, and other objects that are rotatably attached to a second object.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: August 29, 2006
    Assignee: NASCAR, Inc.
    Inventors: Daniel D. Kurtz, Donald E. Krueger
  • Patent number: 6945571
    Abstract: An exit door includes a door panel attached to a door frame and having a presser bar device attached to a stile, to selectively open and lock the door panel to the door frame. The presser bar device includes two lock rods to selectively move into the door frame, a drive pin attached to either of the lock rods, a bracket slidably received in a housing and having a space formed by a hook to engage with the drive pin. A crank is pivotally attached to the housing and has one end coupled to the bracket, a presser bar is carried on the door panel and actuatable onto the other end of the crank, to rotate the crank relative to the housing, and to move the drive pin up and down relative to the housing.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: September 20, 2005
    Inventor: Winson Lin
  • Patent number: 6866227
    Abstract: A method and apparatus for maintaining a panel in a closed position and releasing a panel upon application of changes resulting from a pressure change in an area adjoining the panel. The apparatus includes a latch mechanism attached to a structure having a bolt for engaging corresponding panel. The latch mechanism may be retained on the corresponding panel with the bolt engaging the structure. A pressure responsive device is provided to detect a change in pressure on one side of the panel and facilitating release of the bolt in response to a pressure change of a predetermined range or force. The latch mechanism and pressure responsive device vent to or communicate with only one side of the panel. A reservoir on one side of the panel communicates with a pressure responsive chamber of the pressure responsive device. The reservoir is generally on the same side of the panel to provide a pressure volume which is generally isolated from ambient pressure, such as during a decompression event.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: March 15, 2005
    Assignee: Hartwell Corporation
    Inventors: John D. Pratt, Timothy S. Rozema
  • Patent number: 6866226
    Abstract: An apparatus, system and method including a latching device for displaceably retaining a panel relative to a frame. The latching device includes at least a bolt which is carried on the latching device and is operatively associated with the panel to prevent disengagement of the panel. The latching device includes at least one pressure responsive device operatively coupled to the bolt to retain the bolt in a desired position and release the bolt when a predetermined pressure differential occurs relative to two, generally opposite, sides of the panel or when a pressure decrease occurs on one side of the panel.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: March 15, 2005
    Assignee: Hartwell Corporation
    Inventors: John D. Pratt, Timothy S. Rozema, Frank T. Jackson, Sr., William Bourne, Manuel Andres Hernandez
  • Patent number: 6860528
    Abstract: This is invention provides a touch bar exit device for a door having an active case attached to the door and an inactive case attached to the door. A touch bar assembly is releasable attached to the active case and the inactive case.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: March 1, 2005
    Assignee: Ervos, Inc.
    Inventor: James A. O'Brien, II
  • Patent number: 6732664
    Abstract: The locking mechanism described herein is for use in an enclosure, which is part of a product delivery system. The locking mechanism uses existing locks and latches, and configures them using linkages into a mechanism that is not currently available. The mechanism has a latch that holds the door of the enclosure closed. This latch stays in a normally unlocked state until deliberate acts are taken to lock the latch. When a delivery is made, the delivery person opens the unlocked door, makes the delivery, and then closes the door and turns the rotary latch counter clockwise until it latches in the locked position. There are three independent and distinct ways to unlock the mechanism: (1) a key can be used to unlock the mechanism; (2) a combination lock can be used to unlock the mechanism; or (3) an emergency release paddle, for child safety is located on the lower back cover of the lock, and can be pushed to unlock the mechanism.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: May 11, 2004
    Inventor: Charles H. Worrall
  • Patent number: 6619704
    Abstract: This assembly relates to an emergent unlatching mechanism for the fire door latch which includes a guide tube and a connecting tube so assembled and attached to the interior of the fire door latch without any necessary modification to the existing designed structure of the fire door. With no fire door key available, the fireman can use the ejection of water from the fire hydrant to open the fire door and enter the fire area for fire fighting.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: September 16, 2003
    Inventor: Kun-Lin Lee
  • Patent number: 6189939
    Abstract: An electrified emergency exit device having a normally locked condition and having an operable hold off lock that is accessible from the emergency use side for maintaining an unlocked condition. The emergency exit device includes a star wheel door latch for locking or unlocking a door, a sliding catch having a lock position where the sliding catch is engaged to the door latch for locking the door and a free position where the sliding catch is disengaged from the door latch for unlocking the door, a push bar linkage operable from the emergency use side and coupled for sliding the sliding catch to the free position, a remotely operable solenoid coupled for sliding the sliding catch to the free position, the hold off lock coupled for maintaining the sliding catch in the free position, and a solenoid spring for biasing the solenoid for urging the sliding catch to the lock position when none of the push bar, solenoid, and hold off lock are actuated.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: February 20, 2001
    Inventor: Raymond E. Zehrung
  • Patent number: 6000733
    Abstract: A presser bar mechanism for an exit door having a frame with a stile, upper and lower lock rods vertically sliding in the stile, a presser bar carried on the door frame, a plate mounted in the stile for rotation about a horizontal axis, upper and lower connectors each having a first end attached to the plate and each having a second end attached to said upper and lower lock rods, respectively, a drive pin carried in one of the connectors and projecting outward from the stile, a slide housing carried on the stile and including a slide channel, a slide member carried in the slide housing for translation along the slide channel, and a crank carried in the slide housing and having first and second crank arms, with the first crank arm engageable by the presser bar and with the second crank arm engagable with the slide member so that pressing on the presser bar rotates the crank to move the slide member in the slide housing, with the slide member engaging the drive pin in driving relation to translate the drive pin
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: December 14, 1999
    Assignee: International Door Closers, Inc.
    Inventor: John P. Linder
  • Patent number: 5881585
    Abstract: An apparatus for simultaneously unlocking a locked dead bolt functioning as an auxiliary locking device when a lever of a cylinder door lock is turned from the interior side, in order to promptly and conveniently open a door on the inside. This is possible because an actuating body is installed on the inside for unlocking the dead bolt by rotation of a lever as well as making the lever restore.
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: March 16, 1999
    Assignee: Hyundae Metal Co., Ltd.
    Inventor: Eui Shik Kang
  • Patent number: 5823582
    Abstract: An exit bar for securing a door has a housing adapted for mounting to a door. A push pad for receiving a push force is mounted to the housing. A latch extends from the housing to releasably latch the door to which the exit bar is mounted. A link system links the push pad to the latch so that a push force exerted on the push pad releases the latch. An electromagnetic lock disposed in the housing locks the link system to prevent releasing of the latch. The electromagnetic lock employs an electromagnet and a movable armature to lock the link system. The exit bar further delays unlocking the link system for a preestablished delay time after the push pad has been pushed.
    Type: Grant
    Filed: August 24, 1995
    Date of Patent: October 20, 1998
    Assignee: Harrow Products, Inc.
    Inventors: George Frolov, John E. Walsh, III, James J. Scott
  • Patent number: 5809812
    Abstract: The present invention provides an electronic lock with a deadbolt actuator. The actuator has, a casing, a deadbolt shaft protruding through the casing and an eccentric in said casing attached to said deadbolt shaft to rotate with the deadbolt shaft. A pair of pusher blades are connected to an interior handle supporting tube extending into said casing. The pusher blades are connected to a main bolt shaft to rotate said pusher blades relative to each other wherein the shaft rotates one of said pusher blades while said other pusher blade is not rotated. The pusher blades are in selective contact with the eccentric and move the eccentric from a first position wherein the deadbolt is retracted and to a second position wherein the deadbolt is extended to a locking position. The deadbolt is extended and retracted by either turning the interior thumb turn or turning an exterior handle in an appropriate direction.
    Type: Grant
    Filed: February 7, 1996
    Date of Patent: September 22, 1998
    Assignee: Talleres de Escoriaza, S.A.
    Inventor: Luis Valdajos Gallego
  • Patent number: 5787741
    Abstract: A cartridge assembly includes a base plate which is fixedly connected to a door and has two protruding portions engaged with two peripheries defining two passages of the door. Each of the protruding portions has a central hole and two positioning holes so as to connect to two latch bolts retractably received in the door by bolts. Two bosses extend from the base plate and each has a threaded recess defined therein. A cartridge has at least two lugs extending therefrom and through each of which an aperture is defined so that two bolts extend through the apertures and are threadedly engaged with the threaded recesses. An interior panel is mounted to the cartridge and the base plate.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: August 4, 1998
    Inventor: Mu-Lin Shen
  • Patent number: 5713612
    Abstract: An interconnected lock assembly for use on a door includes a latch mechanism for positioning in a first bore in a door. There is an outside operating member connected to the latch mechanism for causing operation thereof and there is an inside operating member connected to the latch mechanism for causing operation thereof. A deadbolt mechanism is mounted in a second bore in the door, which second bore is spaced from the first bore. The deadbolt mechanism has a deadbolt which is automatically movable to an extended position when a portion of the deadbolt mechanism contacts a door strike. The deadbolt mechanism includes a swivel and there is a spindle in engagement with the swivel for retracting the deadbolt. An interconnected assembly connects the inside operating member and the spindle whereby movement of the inside operating member both operates the latch mechanism and moves the deadbolt to a retracted position.
    Type: Grant
    Filed: January 22, 1996
    Date of Patent: February 3, 1998
    Assignee: Master Lock Company
    Inventor: Pete Kajuch
  • Patent number: 5702134
    Abstract: A door lock system including a control mechanism transversely mounted in a door in the middle, a transmission mechanism mounted in one hollow stile at one lateral side of the door and coupled to one end of the control mechanism at right angles, a top latch assembly and a bottom latch assembly respectively fastened to the hollow stile at difference elevations and driven by the control mechanism through the transmission mechanism to secure to the door to a doorframe, the top latch assembly including a shell fixed to the hollow stile on the inside, a frame mounted inside the shell, a latch bolt pivoted to the shell, a push member pivoted to the frame and driven to move the latch bolt, an adjustment device driven by the transmission mechanism to move the push member, and a locating device mounted in the frame and controlled by a fine adjustment device to secure the actuating device to the frame.
    Type: Grant
    Filed: October 3, 1996
    Date of Patent: December 30, 1997
    Assignee: Ming Wei Industrial Co., Ltd.
    Inventor: Chun-Kun Hsieh
  • Patent number: 5638639
    Abstract: An emergency door, such as a fire door which closes automatically in case of fire, includes a nose piece which moves to an extended position when the door is closed to provide a seal of the gap otherwise present between the forward edge of the door and an adjacent door frame or door, and generally also interlocks with a mating portion of the adjacent frame or door. An addition latching element may be provided to extend from the top edge of the door and be received in a keeper when the door is closed. Door operating hardware, preferably all mounted interiorly of the door except for a push bar on one side of the door and a door handle on the other side, is operable to retract the nose piece and latching element when it is desired to open the door. The nose piece and latching element are held in retracted position when the door is open. A release device releases the latching element and nose piece to extend to extended position when the door is moved to a closed position.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: June 17, 1997
    Assignee: Won-Door Corporation
    Inventors: E. Carl Goodman, Wallace D. Pack, Michael D. George, Ronald A. Smart, Ronald L. Richardson, Craig Bell, Michael Hazlett, James D. Porter
  • Patent number: 5590917
    Abstract: A combination lock/deadbolt is connected to a push-to-open panic-bar device to operate in response to push-bar operation, thereby withdrawing both the push-bar latchbolt and the deadbolt permitting instantaneous and unrestricted egress from a secured area. To maintain the security of the area from unauthorized entry from outside the secured area, a connection between the push-to-open device and the combination lock/deadbolt assembly is implemented with a lost motion connection. The lost motion device, preferably is a flexible cable transmitting force only in tension, assures that any operation of the combination lock/deadbolt will not effect the security provided by the push-to-open device. Further, the push-to-open device may be provided both with a conventional key cylinder lock and a knob, ever, or thumb lever release on the door exterior.
    Type: Grant
    Filed: September 13, 1995
    Date of Patent: January 7, 1997
    Assignees: Mas-Hamilton Group, N T Monarch Hardware
    Inventors: Harold L. Brooks, Thomas R. Clark, Kun H. Kim, James W. Overbey
  • Patent number: 5588686
    Abstract: A door locking and unlocking safety mechanism comprising a push mechanism actuator structure to be carried by the door; a single rod operatively connected with the push mechanism to be displaced by operation of the push mechanism; door latch mechanism operable to latch and unlatch the door in response to movement of the single rod; and temperature response blocking structure associated with the latch mechanism to block operation of the latch to unlatch the door, in response to a predetermined increase in ambient temperature.
    Type: Grant
    Filed: December 5, 1994
    Date of Patent: December 31, 1996
    Assignee: Adams Rite Manufacturing Company
    Inventors: Rory M. Riley, Alan K. Uyeda, Michael Winardi
  • Patent number: 5527074
    Abstract: Disclosed is a door lock for locking a double-swinging type fire protection door. The door lock has a safety device controlled by a melting heat sensitive element to lock the spring bolt of the lock bolt in the locked position when the ambient temperature is sharply increased due to a fire.
    Type: Grant
    Filed: October 20, 1994
    Date of Patent: June 18, 1996
    Inventor: Wen Tien Yeh
  • Patent number: 5340171
    Abstract: A door latch control apparatus for use on a panic exit door allowing the door to be unlatched either manually or electrically is disclosed. Manual latch retraction is accomplished by pushing inwardly a push bar. Electrical latch retraction is accomplished by energizing a solenoid. A unique linkage system is provided to allow for the independent operation of the manual and electrical latch retraction. The apparatus also provides for the door to be dogged, i.e., securing the latch in the unlatched position, either manually or electrically. Manual dogging may be accomplished with the use of a fail safe dogging mechanism. Electrical dogging is accomplished by leaving the solenoid energized and thus the latch retracted.
    Type: Grant
    Filed: January 22, 1992
    Date of Patent: August 23, 1994
    Assignee: Republic Industries, Inc.
    Inventors: Loren E. Slaybuagh, James M. Huffman
  • Patent number: 5322332
    Abstract: A latch assembly for use with a panic exit device, particularly a top latch having a U-shape which engages a stem portion of a T-shaped receiving lug mounted overhead to a top member of the door frame. The U-shaped top latch is pivotably mounted to the active stile of the door. The latch assembly causes the U-shaped latch to pivot upward to capture the stationary T-shaped receiving lug, or pivot downwardly to disengage from the T-shaped receiving lug. The latch member is in sliding and abutting engagement with two latch plates which slide in one direction to retain the latch member in a downward orientation to hold the latch in an open position, and slide in an opposite direction to allow the latch member to pivot upwardly upon engaging pressure by the strike. A wedge is caused to slide into blocking engagement with the latch when it is in the closed position.
    Type: Grant
    Filed: October 16, 1992
    Date of Patent: June 21, 1994
    Assignee: Thomas Industries, Inc.
    Inventors: George Toledo, Petros Z. Mantarakis