Spring Patents (Class 16/72)
  • Patent number: 11874253
    Abstract: High-speed tubular inspection systems include a frame at least one magnetic flux generator contained in a coil annulus and a detector assembly each having inlet and outlet openings for passing a tubular member there through. The detector assembly has one or more magnetic detectors and one or more eddy current detectors configured to be spaced a first distance from the tubular member during an inspection. The detectors are each contained in one or more EMI detector shoes. A conveyor supports the frame and a drive mechanism configured to drive the tubular member through the coil annulus (or drive the coil annulus past the tubular member) at high-speeds.
    Type: Grant
    Filed: June 22, 2022
    Date of Patent: January 16, 2024
    Assignee: SCAN SYSTEMS CORP.
    Inventors: John Tolman, Danny Uselton, John Zeigler
  • Patent number: 11619071
    Abstract: A door latch system includes an exit device having a housing mounted to an unsecured side of a door. A latch assembly is mounted in the housing and includes a latch for releasably securing the door in a door frame. An actuating assembly includes a driving member. A push bar is configured to be received within the housing. Relative movement between the push bar and base plate so as to reduce the distance between the push bar and base plate moves the driving member and latch to release the door from the door frame. A dashpot is connected to the driving member and configured to allow movement of the driving member when the push bar is manually depressed but to resist movement of the driving member when a secure side of the door experiences a high velocity impact. A method of resisting unwanted unlatching of the latch is also disclosed.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: April 4, 2023
    Assignee: Hanchett Entry Systems, Inc.
    Inventors: John Austin Brennan, Daniel Patrick Van Dusen, Neil Brendan O'Leary, Richard Samuel Kreidel
  • Patent number: 11472648
    Abstract: A sheet supporting apparatus includes a sheet supporting unit having a sheet supporting portion including a supporting surface on which a sheet is supported, and a first engagement unit attached to the sheet supporting portion, and a second engagement unit to draw in the sheet supporting unit toward an attaching position where the sheet supporting unit is attached to an apparatus body. The first engagement unit includes a first engagement portion, a base portion supported by the sheet supporting portion, and a holder that is supported movably in a perpendicular direction perpendicular to the supporting surface by the base portion and configured to hold the first engagement portion. The base portion supports the holder swingably around a swing shaft that extends in a direction orthogonal to both the perpendicular direction and an inserting direction in which the sheet supporting unit is inserted.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: October 18, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuya Morohashi, Akira Matsushima
  • Patent number: 11459811
    Abstract: The invention relates to a movement assemblage, in particular for a drawer, a sliding door, a hinged door, a hatch, or a similar movable furniture part, having a push-out assemblage; the push-out assemblage comprising a guide element (90) on which an energy reservoir (80) acts; the guide element (90) being displaceable from a parked position into an ejection position; and a switching piece (99), which is displaceable with respect to the guide element (90), being attached to the guide element (90). For improved movement guidance, provision is made according to the present invention that the switching piece (99) comprises a guide element (99.4) that is guided in a guide track (74) of the fitting.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: October 4, 2022
    Inventor: Ulrich Bantle
  • Patent number: 10914109
    Abstract: In a hinge device comprising a first member attached to a main body, a second member attachable to a door and rotatable about a vertical rotation axis with respect to the first member, a cam provided in the first member, and a linear damper provided in the second member and actuatable by the cam, the linear damper is disposed below the lower surface of the door.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: February 9, 2021
    Assignee: SUGATSUNE KOGYO CO., LTD.
    Inventor: Ken Shinmura
  • Patent number: 10865001
    Abstract: Vaporizer device cartridges are provided. In some implementations, a cartridge comprises a storage compartment having first and second opposing ends, a sealing material sealing the second end, and a wick positioned proximate to the first end. The storage compartment is configured to hold a liquid vaporizable material. The sealing material is configured for insertion of a needle through the sealing material for dispensing the liquid vaporizable material into the storage compartment. The wick comprises opposing ends in communication with the storage compartment and is configured to allow a volume of air to exit the storage compartment through the wick when the storage compartment is being filled with the liquid vaporizable material.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: December 15, 2020
    Assignee: JUUL Labs, Inc.
    Inventors: Ariel Atkins, Steven Christensen, Aaron Keller, James Monsees
  • Patent number: 10745955
    Abstract: A device is provided for controlling the motion of a movable member such as a sliding door. The device comprises two springs. Each spring has its own catch for releasably holding it in a pre-loaded condition. The catches are releasable by motion of the door to apply force to its closing movement. The catches are arranged so that one of the springs will exert force on the door before the other.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: August 18, 2020
    Assignee: Titus d.o.o. Dekani
    Inventors: Valter Svara, Danijel Kozlovic
  • Patent number: 10233054
    Abstract: An elevator car upper handrail apparatus, in which a connecting body is provided between respective ends of first and second side handrails on a landing side. The connecting body includes an opening/closing member which is rotatable between a closed position, in which a path for movement of a worker from a landing to a car upper surface is closed by the opening/closing member, and an open position, in which the path for movement is opened by the opening/closing member. The opening/closing member is configured to return automatically to the closed position. When the opening/closing member is in the closed position, the connecting body transmits an external force applied to one of the first and second side handrails in the width direction of a car to the other of the first and second side handrails.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: March 19, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takahide Ishiguro, Naoyuki Maruyama, Hironobu Kamada, Hideki Miyahara, Kazuya Shindo
  • Patent number: 10168734
    Abstract: A foldable display device includes a flexible display screen and a support back plate fitted to the flexible display screen. The support back plate includes a first support plate and a second support plate that is articulated with the first support plate by a double-shaft articulated mechanism. The double-shaft articulated mechanism includes a first rotation shaft pivotally coupled to the first support plate, a second rotation shaft pivotally coupled to the second support plate and a tension releasing mechanism provided between the first rotation shaft and the second rotation shaft.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: January 1, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Yanliu Sun
  • Patent number: 9903145
    Abstract: An actuating drive includes an actuating arm pivotally mounted about a pivoting axis for moving the movable furniture part, a spring device for applying a force onto the actuating arm, and a transmission mechanism for transmitting a force of the spring device onto the actuating arm. The transmission mechanism includes an actuating portion movement-coupled to the actuating arm, a setting contour, and a pressure portion pressurized by the spring device. The pressure portion is a rotatably mounted pressure roller for running along the setting contour. The setting contour is arranged between the actuating portion and the pressure roller, and the setting contour is on a contour portion separate from the actuating portion. The contour portion has a fastening section configured to rest against the actuating portion and a limb protruding transversely from the fastening section, and the setting contour is a curved outer surface of the limb.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: February 27, 2018
    Assignee: JULIUS BLUM GMBH
    Inventors: Edgar Huber, Harald Nussbichler
  • Patent number: 9695620
    Abstract: An apparatus for adjusting the force in a door operator or closer includes a tube rotatable about a longitudinal axis and a coil spring therein connected to door operator/closer. A fixed adjusting screw extends along the longitudinal axis of the housing through the coil spring and a spring collar is threaded onto the adjusting screw and rotatable with the tube. The spring collar bears on the distal end of the spring to vary the spring compression upon rotation of the housing and thereby vary force applied by the door operator or closer. The housing has an opening though which the spring is visible, and the tube has markings indicating the degree of spring compression. An indicator is moveable along and visible outside the housing to indicate the compression of the spring.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: July 4, 2017
    Assignee: Yale Security Inc.
    Inventors: Peter Zasowski, Dustin Lawhon, Robert M. Bell
  • Patent number: 9560777
    Abstract: A hot/cold aisle air containment room includes a plurality of electronic equipment enclosures at least partially defining an interior aisle, a frame structure supporting one or more ceiling panels above the interior aisle, and a door assembly. The door assembly includes a sliding door and an unpowered door closer mechanism adapted to move the sliding door from an open state to a closed state, thereby providing controlled access to the interior aisle and minimizing intermixing of hot air and cold air between an environment external to the hot/cold aisle air containment room and an environment internal to the hot/cold aisle air containment room.
    Type: Grant
    Filed: February 10, 2013
    Date of Patent: January 31, 2017
    Assignee: Chatsworth Products, Inc.
    Inventors: William Krietzman, Richard Evans Lewis, II
  • Patent number: 9388619
    Abstract: Disclosed herein is an automatic closing apparatus for a sliding apparatus. The sliding apparatus comprises a fixed rail, a movable rail, and the automatic closing apparatus. The automatic closing apparatus includes a body, a slider, a housing, a damping unit, and an elastic body. The body is provided on the fixed rail and has an actuating space therein. The body includes: a guide wall that is provided in the actuating space and includes a curved guide part and a linear guide part; and a receiving space formed adjacent to the curved guide part. The slider is locked to or unlocked from a locking member of the movable rail and slides in an open or close direction under guide of the guide wall. The housing is coupled to the body. The damping unit is installed in the housing. The elastic body is fastened to the housing and the slider.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: July 12, 2016
    Assignees: SEGOS CO., LTD.
    Inventors: Yoon Sig Park, Hyun ho Cha
  • Publication number: 20150128378
    Abstract: A door actuating device, including a housing, at least one drive unit which is disposed in the housing and can be coupled to a door leaf, and at least one spring energy accumulator, which is in operative connection with the drive unit, and which includes a spring disposed therein under spring pretension, wherein the spring pretension of the spring is realized by means of a spring adjusting device, which includes at least one screwed sealing plug, which can be connected to the housing, and an adjusting nut, where a cylinder is configured at the screwed sealing plug and oriented towards the spring, at which cylinder the adjusting nut is linearly guided, where a setting element which is guided by means of the screwed sealing plug and, at least in sections, can be brought non-positively and positively into engagement with the cylinder, and which bears against the adjusting nut, serves for adjusting the spring pretension.
    Type: Application
    Filed: November 11, 2014
    Publication date: May 14, 2015
    Inventor: Alexander HELLWIG
  • Patent number: 9009917
    Abstract: A door closer is provided to automatically pull a storm or screen door to a fully closed position without user action. The door closer includes a bracket housing with a cam switch movable along a track as the door opens and closes. The closer cylinder rod is engaged with the cam switch until the door is fully opened. The cam switch biases the closer cylinder and rod as the door approaches the closed position.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: April 21, 2015
    Assignee: Cmech (Guangzhou), Ltd.
    Inventor: Wei Jin Chao
  • Patent number: 9009918
    Abstract: A carriage, which serves for holding and shifting a separating element in a running direction along a rail, includes a carriage body that holds at least one running element and a mounting body that is slidably connected to the carriage body and is connectable to the separating element. A coupling member includes a first and second coupling element connected via a bridge member, wherein the first coupling element is slidably held in the carriage body and the second is slidably held in the mounting body. The bridge member has a first coupling surface inclined relative to the running direction which supports the carriage body or the mounting body, so that with a movement of the coupling member the carriage and mounting bodies are shifted relative to one another. The shifting device includes two inventive carriages that are guided in a rail and that are connected to a separating element.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: April 21, 2015
    Assignee: Hawa AG
    Inventors: Gregor Haab, Peter Ettmüller, Myrta Kappeler, Felix Meili
  • Patent number: 8943652
    Abstract: A hinge for cold rooms, swing gates or the like includes a stationary support structure and at least a door movable between an open door position and a closed door position. The hinge comprises a box-like hinge body and a pin rotatably coupled to rotate about a first axis between the open door position and the closed door position. Closing means are provided for automatically returning the door, as well as a working fluid acting thereon to hydraulically contrast their action. The closing means comprise a cam element unitary with the pin interacting with a plunger element housed in an operating chamber defined within the box-like hinge body. The box-like hinge body has an elongated shape to define a second axis perpendicular to the first axis.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: February 3, 2015
    Assignee: IN&TEC S.R.L.
    Inventor: Luciano Bacchetti
  • Publication number: 20150020350
    Abstract: A power boost assembly is disclosed that can be used with a door actuator, such as a door closer. The power boost assembly is structured to store an energy during a first movement of a door and release the stored energy during a second movement of the door. In one form the power boost assembly can be structured as a module that can be added to an existing door and door closer installation. In one form the power boost assembly is used to increase a closing force imparted to a door to ensure a latching event.
    Type: Application
    Filed: July 29, 2014
    Publication date: January 22, 2015
    Inventors: Aaron Patrick McKibben, Brian Christopher Eickhoff
  • Patent number: 8931139
    Abstract: A movable device for a movable body has a reception body fixed to a support body or the movable body relatively moving to the support body, and includes a plurality of engagement portions protruding from the support body or the movable body by being separated from each other; a base body provided in the other of the support body or movable body; an abutment body formed to move along a movement direction of the movable body, and engaging one of the engagement portions in a case wherein the movable body moves in a movement completion position thereof; and an urging mechanism formed urgingly between the base body and the abutment body, restricting a movement of the base body or abutment body by urging, and releasing restriction of the movement by engagement of the abutment body with one of engagement portions.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: January 13, 2015
    Assignee: Nifco Inc.
    Inventor: Norio Saito
  • Patent number: 8931138
    Abstract: A movement assist device includes a retraction tool having a case, a latch switched between a standby position which is locked inside the case and a retraction position which releases the locking so as to be capable of sliding, and an urging device; and a striker switching the latch from the standby position to the retraction position, or vise versa. The retraction tool or the striker is provided in a fixed body, or a moving body movably disposed in the fixed body. When the latch is switched from the standby position to the retraction position, a sliding door moves by an urging force. The case includes a striker leading portion notched such that a width of the case becomes thin to a middle of the other end from one end in a longitudinal direction. Also, one portion of the latch is exposed and disposed in the leading portion.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: January 13, 2015
    Assignee: Nifco Inc.
    Inventor: Yohel Shimizu
  • Patent number: 8910345
    Abstract: A door closer has a housing for connection to a door and a drive spindle (10) coupled to the door. As the door moves the spindle (10) and housing (11) rotate relative to one another. The relative movement is translated by a piston and cam mechanism (21, 22) into a force that is used to separate a pair of magnets (28). The magnetic attraction of the magnet pairs (28) serves as a force to resist opening of the door and biases the door from an open to a closed position. At least one first magnet is coupled to the drive member and at least one second magnet (32) coupled to the housing. The magnets are arranged in the housing with their opposite poles facing one another such that there is a magnetic force of attraction between them. At least one further biasing spring (36) may be provided to provide a biasing force after the magnetic force has diminished by separation of the magnets.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: December 16, 2014
    Assignee: Ingersoll Rand Security Technologies Limited
    Inventors: Timothy Bland, James Frost, David Williams, Lee Melville
  • Patent number: 8863357
    Abstract: An adjustable door closer has a hollow pedestal with a first and a second chamber as well as an actuating groove. An actuating device is set into the actuating groove. A first piston assembly is set into the first chamber and a second piston assembly set into the second chamber. A partition wall is formed between the first and second chambers. Due to a laterally configured flow resistance unit, the holes to be set into the first and second chambers are reduced to three, including a connecting hole and first and second backflow bypass holes, all of which are connected only to the second chamber from the partition wall. As such, the flow path structure is simplified compared to the five holes required for typical structures. The adjustable door closer could reduce significantly the manufacturing cost and realize better regulating functions with improved applicability and economic benefits.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: October 21, 2014
    Assignee: Heng Kuo Co., Ltd
    Inventor: Hui-Chen Chang
  • Publication number: 20140283336
    Abstract: A method and apparatus for assisting movement of a bin into a closed position. An assistance system associated with the bin may be activated in response to a manipulation of a switch associated with the bin. The assistance system may comprise a biasing system and a switch. The biasing system may be configured to generate a force in a direction towards a closed position for the bin. A switch may be connected to the biasing system and configured to activate the biasing system when a selected amount of weight is present in the bin. The force in the direction towards the closed position for the bin may be generated in response to activating the assistance system.
    Type: Application
    Filed: June 7, 2014
    Publication date: September 25, 2014
    Inventors: Mark LeQuesne Cloud, Christopher Lyle Schwitters, Kwun-Wing Cheung, Paul Andrew Kinzer
  • Publication number: 20140223692
    Abstract: A strut assembly is provided including a holding and releasing mechanism adapted to be attached to a cylinder-type closer. The mechanism comprises the strut assembly including a strut cylinder, a strut rod, a pivot block, and a locking tube. The strut assembly further comprises a stop tube including a clip at a first end and a collar at a second end. The stop tube further includes a rigid angled ramp connecting the clip and the collar. The clip moves from a first position to a second position while pivoting the locking tube at a first end in order to engage the locking tube at another end with the strut cylinder thereby holding the strut assembly in an extended position.
    Type: Application
    Filed: February 3, 2014
    Publication date: August 14, 2014
    Applicant: Barnes Group Inc.
    Inventor: Jack Adoline
  • Patent number: 8793838
    Abstract: A power boost assembly is disclosed that can be used with a door actuator, such as a door closer. The power boost assembly is structured to store an energy during a first movement of a door and release the stored energy during a second movement of the door. In one form the power boost assembly can be structured as a module that can be added to an existing door and door closer installation. In one form the power boost assembly is used to increase a closing force imparted to a door to ensure a latching event.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: August 5, 2014
    Assignee: Schlage Lock Company LLC
    Inventors: Aaron Patrick McKibben, Brian Christopher Eickhoff
  • Patent number: 8793839
    Abstract: Provided is a retracting device in which dampers have improved durability and strokes of operation of the dampers are not reduced. A first slider 14-1 for assisting closing, a second slider 14-2 for assisting opening, and a damper base 22 are provided in an elongating base 12 to be slidable in a longitudinal direction of the base 12. The damper base 22 is disposed between the first slider 14-1 and the second slider 14-2. A first damper 24 is provided over between the first slider 14-1 and the damper base 22 and a second damper 25 is provided over between the second slider 14-2 and the damper base 22.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: August 5, 2014
    Assignee: Sugatsune Kogyo Co., Ltd.
    Inventor: Junpei Iwaki
  • Publication number: 20140157544
    Abstract: A door operator includes a base plate with a receiving profile, a shaft housing inserted into the receiving profile, a first cylinder housing inserted into the receiving profile, a driven shaft rotatably bearing-mounted in the shaft housing, and a piston which is linearly movably guided in the first cylinder housing. The piston and the driven shaft cooperate for mutual conversion between a linear movement of the piston and a rotational movement of the driven shaft, and an energy accumulator is arranged in the first cylinder housing and cooperates with the piston.
    Type: Application
    Filed: November 22, 2013
    Publication date: June 12, 2014
    Inventor: Alexander HELLWIG
  • Patent number: 8683649
    Abstract: In an automatically closing hinge, a first body and a second body are mounted on a fixed shaft, and axial and radial moving members are adjacently disposed inside the fixed shaft. The second body pivoting rearward in relation to the first body enables an inward radial movement of the radial moving member, and during the inward radial movement the radial moving member causes a forward axial movement of the axial moving member. An energy storing member in the fixed shaft is configured to store energy during the forward axial movement of the axial moving member and to release energy for driving the axial moving member to make a reverse axial movement. During the reverse axial movement the axial moving member pushes the radial moving member to make an outward radial movement. The radial moving member during such outward radial movement drives the second body to pivot forward.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: April 1, 2014
    Assignee: Avision Inc.
    Inventor: Chih-Chin Tzeng
  • Patent number: 8677560
    Abstract: A door closer for doors, particularly glass doors, which are supported by a stationary support structure and are movable between an open door position and a closed door position. The door closer comprises a box-shaped body and a pin reciprocally coupled to rotate around a first axis between the open door position and the closed door position. A closing mechanism causes the door to return automatically and a braking mechanism counteracts the action of the closing mechanism. First and second cam elements are unitary with the pin and interposed between a first and second plunger elements acting thereon.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: March 25, 2014
    Assignee: IN&TEC S.r.l.
    Inventor: Luciano Bacchetti
  • Publication number: 20140059801
    Abstract: A movable device for a movable body has a reception body fixed to a support body or the movable body relatively moving to the support body, and includes a plurality of engagement portions protruding from the support body or the movable body by being separated from each other; a base body provided in the other of the support body or movable body; an abutment body formed to move along a movement direction of the movable body, and engaging one of the engagement portions in a case wherein the movable body moves in a movement completion position thereof; and an urging mechanism formed urgingly between the base body and the abutment body, restricting a movement of the base body or abutment body by urging, and releasing restriction of the movement by engagement of the abutment body with one of engagement portions.
    Type: Application
    Filed: April 18, 2012
    Publication date: March 6, 2014
    Applicant: NIFCO INC.
    Inventor: Norio Saito
  • Patent number: 8656554
    Abstract: A gate closer used to automatically close an existing fence gate upon opening in either direction includes a bracket attaches to and extending upwardly from a hinge side of the gate and over any existing fence post that supports the fixed side of the hinge. The outer end of the bracket provides an attachment to a cable, which is in turn connected to a stationary pulley and tension spring mounted to a top frame portion of the fence. The opposite end of the spring is connected to an adjustment rod used to adjust tension force of the spring. The cable provides a constant force on the bracket, which forces the bracket and attached gate to the neutral or closed position. The apparatus works regardless of which direction the gate is opened as it come to rest in the closed position.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: February 25, 2014
    Inventor: Isaac S. Burleson
  • Publication number: 20140026358
    Abstract: A housing of an assisting apparatus according an embodiment is a housing of an assisting apparatus provided on a receiving part formed on either one of a support body and a movable body that moves sliding in a first direction relative to the support body. The housing of an assisting apparatus has a support part that projects in a second direction intersecting with the first direction and is supported on a support surface of the receiving part; and a separated part that stands at a distance from the support surface.
    Type: Application
    Filed: March 13, 2012
    Publication date: January 30, 2014
    Applicant: NIFCO INC.
    Inventor: Norio Saito
  • Publication number: 20140026357
    Abstract: In a combined acceleration and deceleration arrangement with a support and guide structure supporting a carrier element movable between a park position and an end position and an energy store which is charged when the carrier element is in the park position and discharged when it is in the end position, the carrier element has a guide part and a securing part and each has an engagement stop, the energy store being connected to the securing part and an operating element being connected to the guide part.
    Type: Application
    Filed: August 8, 2013
    Publication date: January 30, 2014
    Inventors: Guenther Zimmer, Martin Zimmer
  • Patent number: 8533909
    Abstract: Coil springs are incorporated, with a longitudinal direction oriented vertically, into the top and bottom end parts of hinge pieces provided on side surfaces of opposing door panels of a folding door and that connect the doors panels together. A portion of a pin plate is inserted into the coil springs at the top and bottom end parts of the coil springs and attached to the coil springs. The pin plate that is inserted into the top end part of the coil spring incorporated into the top end part of the hinge piece and the pin plate that is inserted into the bottom end part of the coil spring incorporated into the bottom end part of the hinge piece are fixed to the hinge pieces by brackets. The folding door is closed by the restoring force generated by the twisting of the coil springs.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: September 17, 2013
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Eita Minegishi, Satoru Shibata
  • Patent number: 8443487
    Abstract: A door closer for doors, particularly glass doors, which are supported by a stationary support structure (S) and are movable between an open door position and a closed door position. The door closer comprises a box-like body (10) and a pin (20) reciprocally rotatably coupled to rotate around a first axis (x) between the open door position and the closed door position. Closing means are provided (30) to automatically return the door, as well as a braking means (40) acting thereon to counteract their action. First and second cam elements (31, 41) unitary with the pin (20) and interposed between a first and second plunger elements (32, 42) are provided.
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: May 21, 2013
    Assignee: In & Tec S.r.l.
    Inventor: Luciano Bacchetti
  • Publication number: 20130104339
    Abstract: A movement assist device includes a retraction tool having a case, a latch switched between a standby position which is locked inside the case and a retraction position which releases the locking so as to be capable of sliding, and an urging device; and a striker switching the latch from the standby position to the retraction position, or vise versa. The retraction tool or the striker is provided in a fixed body, or a moving body movably disposed in the fixed body. When the latch is switched from the standby position to the retraction position, a sliding door moves by an urging force. The case includes a striker leading portion notched such that a width of the case becomes thin to a middle of the other end from one end in a longitudinal direction. Also, one portion of the latch is exposed and disposed in the leading portion.
    Type: Application
    Filed: May 20, 2011
    Publication date: May 2, 2013
    Applicant: NIFCO INC.
    Inventor: Yohel Shimizu
  • Publication number: 20130097805
    Abstract: A door closer has a housing for connection to a door and a drive spindle (10) coupled to the door. As the door moves the spindle (10) and housing (11) rotate relative to one another. The relative movement is translated by a piston and cam mechanism (21, 22) into a force that is used to separate a pair of magnets (28). The magnetic attraction of the magnet pairs (28) serves as a force to resist opening of the door and biases the door from an open to a closed position. At least one first magnet is coupled to the drive member and at least one second magnet (32) coupled to the housing. The magnets are arranged in the housing with their opposite poles facing one another such that there is a magnetic force of attraction between them. At least one further biasing spring (36) may be provided to provide a biasing force after the magnetic force has diminished by separation of the magnets.
    Type: Application
    Filed: September 23, 2010
    Publication date: April 25, 2013
    Applicant: INGERSOLL RAND SECURITY TECHNOLOGIES LIMITED
    Inventors: Timothy Bland, James Frost, David Williams, Lee Melville
  • Patent number: 8307495
    Abstract: The present invention is a door closer for controlling the rate a door is closed. The door closer includes a tubular cylinder closed at a first end. Slidably mounted within the tubular housing is a rod assembly that includes a piston at a first end. As the rod assembly is moved through the cylinder, air is drawn into and expelled from the cylinder. A hold open bracket is mounted on the rod assembly for locking the position of the rod assembly with respect to the cylinder. A pair of springs is mounted on the rod, one on each side of the hold open bracket, to maintain the hold open bracket in a neutral position in normal operation. A cover is slidably mounted over the second end of the cylinder to move the hold open bracket to a locked position.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: November 13, 2012
    Assignee: Hardware Specialties, Inc.
    Inventor: John K. Berkseth
  • Patent number: 8307496
    Abstract: The present invention relates to a door closer comprising a cylinder body and a telescopic rod, wherein a one-way air intake valve is provided in the cylinder body to take in air in one way in an internal cavity of the cylinder body when the door is opened. The internal cavity of the cylinder body is divided into two automatically pressurizeable and automatically compensatable air cavities. When the door is opened or closed, the air inside the internal cavity of the cylinder body flows cyclically in the two air cavities. The door closer ensures air substantially flows cyclically in a cylinder body, reduces pollution caused by dusts in air into and out of the cylinder body to the lubricant oil in the cylinder wall, guarantees the lubricating effect of the lubricant oil, enables the door closer to operate normally and effectively prolong the service life of the door closer.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: November 13, 2012
    Assignee: CMECH (Guangzhou) Industrial Ltd.
    Inventor: Fengqing Wu
  • Publication number: 20120272475
    Abstract: A door closer, in particular a hinge door closer, including a free-swing function, having a door closer housing, an output shaft to be connected to a door, a piston assembly connected to the output shaft and guided in the door closer housing, a closer spring, a piston rod adapted to connect the piston assembly to the closer spring, a free-swing assembly which is adapted to enable a translational motion of the piston assembly decoupled from the closer spring when the closer spring is locked, and a hydraulic lock compartment adapted to lock the closer spring. An additional closer spring acts on the piston assembly, in order to slightly load the piston assembly toward the closing direction when in free-swing mode. The additional closer spring is weaker than the closer spring.
    Type: Application
    Filed: November 30, 2010
    Publication date: November 1, 2012
    Applicant: Dorma GmbH + Co. KG
    Inventor: Volker Bienek
  • Publication number: 20120240351
    Abstract: A door closer, in particular a hinge door closer, including a locking function or free-swing function, having a door closer housing, an output shaft to be connected to a door, a piston assembly connected to the output shaft and guided in the door closer housing, a closer spring, a piston rod adapted to connect the piston assembly to the closer spring, a hydraulic lock compartment adapted to lock the closer spring, and a spring-loaded check valve arranged between the lock compartment and a space becoming smaller during the opening process of the door, in particular an accommodating space for the closer spring. The spring-loaded check valve locks toward the space becoming smaller.
    Type: Application
    Filed: November 30, 2010
    Publication date: September 27, 2012
    Applicant: Dorma GmbH + Co. KG
    Inventors: Volker Bienek, Sabine Wiemann, Thomas Pabst
  • Publication number: 20120210647
    Abstract: A power boost assembly is disclosed that can be used with a door actuator, such as a door closer. The power boost assembly is structured to store an energy during a first movement of a door and release the stored energy during a second movement of the door. In one form the power boost assembly can be structured as a module that can be added to an existing door and door closer installation. In one form the power boost assembly is used to increase a closing force imparted to a door to ensure a latching event.
    Type: Application
    Filed: September 23, 2011
    Publication date: August 23, 2012
    Inventors: Aaron Patrick McKibben, Brian Christopher Eickhoff
  • Publication number: 20120167474
    Abstract: A weight compensation system is provided for a motor driven door having a door leaf that is driven by a mechanism inside guide rails on a side of the door leaf to move the door between an opened position and a closed position. The weight compensation system includes a weight-compensation device comprising a cable unit and a spring unit arranged at least on one side of the door leaf, wherein the cable unit comprises a single cable. A cable-tension compensation device at which the single cable is deflected creates two cable strands that are secured against breakage within the cable-tension compensation device. The cable-tension compensation device is positioned locally fixed or secured to the door leaf so that two cable strands move at a distance to each other, and the exposed ends of the cable are guided together and attached to the door leaf or are positioned locally fixed, respectively.
    Type: Application
    Filed: September 3, 2010
    Publication date: July 5, 2012
    Applicant: SOMMER ANTRIEBS-UND FUNKTECHNIK GMBH
    Inventor: Gerd Schaaf
  • Publication number: 20120144622
    Abstract: A return device for a drawer employs an actuator to drive a slide block, when the drawer is pulled open, the slide block is moved into a positioning concave and positioned therein while stretching an elastic member. Or pushing the drawer back can make the slide block slide out of the positioning concave, meanwhile, the elastic member pulls the drawer back to its original position. Furthermore, since the angle between the slide surface of the positioning concave of the positioning member and the track is obtuse, it is easy for the slide block to slide in and out, so that the drawer can be easily positioned and unlocked from the positioned state.
    Type: Application
    Filed: February 24, 2012
    Publication date: June 14, 2012
    Inventors: TENG-YI JUAN, Shih Wang Chen
  • Patent number: 8191206
    Abstract: A hinge for cold rooms, swing gates or the like includes a stationary support structure and at least a door movable between an open door position and a closed door position. The hinge comprises a box-like hinge body and a pin rotatably coupled to rotate about a first axis between the open door position and the closed door position. Closing means are provided for automatically returning the door, as well as a working fluid acting thereon to hydraulically contrast their action. The closing means comprise a cam element unitary with the pin interacting with a plunger element housed in an operating chamber defined within the box-like hinge body. The box-like hinge body has an elongated shape to define a second axis perpendicular to the first axis.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: June 5, 2012
    Assignee: Dianora Gosio
    Inventor: Luciano Bacchetti
  • Patent number: 8186736
    Abstract: A hinge mechanism 29 that rotatably provides a luggage board 27 and an auxiliary board 28 continuously with each other while interposing an integral hinge 13 therebetween, in which a space portion S is provided between mutually opposite end surfaces 20 and 21 of the luggage board 27 and the auxiliary board 28, wherein a restoring force generation portion 30a of a spring member 30 is housed in the space portion S, and in addition, both end portions 31 and 32 of the spring member 30 are fixed to the luggage board 27 and the auxiliary board 28, respectively.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: May 29, 2012
    Assignee: Meiwa Industry Co., Ltd.
    Inventor: Takeshi Jouraku
  • Patent number: 8181311
    Abstract: The present invention provides an adjustable hinged door closer, including a seat with the first and second cylinders, and a first and a second elastic linkage unit. A double-threaded regulator is incorporated onto the first connecting rod of the first elastic linkage unit, so as to change the compression of the spring and regulate the closing/restoring force of the door body. The double-threaded column of the double-threaded regulator has a double-thread that shifts to two thread pitches by just making one rotation, thus facilitating the fine-tuning easily. The elastic linkage unit and the regulator are structurally configured to be assembled externally, and then mated with the connecting seat of the door closer.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: May 22, 2012
    Assignee: Heng Kuo Co., Ltd.
    Inventors: Chi-Tsao Chiang, Jack Huang, Jason Chang
  • Patent number: 8151413
    Abstract: A drawing device increases durability of dampers. A slider 14 and a damper base 22 are provided slidable on a base 12 of a drawing device. The damper base 22 is provided with a damper lock 28 which engages with the base 12 to prevent the damper base 22 from sliding and also makes the damper base slidable in the longitudinal direction. When the slider 14 moves relative to the base 12 in the longitudinal direction by a biasing force of an elastic member 15, the damper base in engagement with the base 12 by the damper lock 28 first moves relative to the slider 14 and thereby, the first damper 24 generates a damping force. Then, the damper lock 28 and the base 12 are disengaged, the base 12 moves relative to the damper base 22 and the slider, and thereby, the second damper 25 generates a damping force.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: April 10, 2012
    Assignee: Sugatsune Kogyo Co., Ltd.
    Inventor: Junpei Iwaki
  • Publication number: 20110254416
    Abstract: The self-closing and opening device (1) particularly of a movable furniture part (103) comprises a fixed guide (8) having a supporting body (2) in which a first slider (3) can slide reversibly along a sliding axis (100) in opposition to and through the action of first elastic means (5), the first slider (3) being engageable with first driving means (106) present on a driving element (6) which slides reversibly in the direction of the sliding axis (100), the supporting body (2) comprising first movement means (4) for movement of the first slider (3) suitable to engage with guide means (12, 13) of the first slider (3), so as to release it from the driving means (106), also provided with a mechanical or elastically yielding stop (9, 120) against which the first slider (3) rests directly or indirectly before it engages with the guide means (12,13) in the first movement means (4) the driving element (6) being then pushed by an ejector (20) generating an initial opening movement of said movable furniture part (103)
    Type: Application
    Filed: September 28, 2009
    Publication date: October 20, 2011
    Applicant: Arturo Salice S.P.A.
    Inventor: Luciano Salice
  • Publication number: 20110253714
    Abstract: A lift assist mechanism is provided for assisting lifting of a movable component that can move between lowered and raised positions relative to a fixed structure. The lift assist mechanism includes a lift assist spring connected to a spring shaft, and an elongated track in which an end of the lift assist spring or an end of the spring shaft are movably engaged. A spring lock restrains movement of the spring shaft when a lift assist is not required, and releases the spring shaft when a lift assist is required.
    Type: Application
    Filed: April 18, 2011
    Publication date: October 20, 2011
    Applicant: BE INTELLECTUAL PROPERTY, INC.
    Inventors: Clarence IVESTER, Erik E. S. NILSEN, Robert K. BRAUER