Door And Ladder Patents (Class 182/77)
  • Patent number: 9555872
    Abstract: An aeroplane includes an escape opening passing through an external skin and an internal bulkhead. The escape opening is closed off by an external escape hatch having an external opening controller. The aeroplane further includes an internal escape hatch that closes off said escape opening flush with the internal bulkhead, and kept closed by at least one catch movable between a locked state and unlocked state, a first opening controller that controls the passage from the locked state to the unlocked state of the catch being accessible from inside the aeroplane, and a second opening controller that controls the passage from the locked state to the unlocked state of the catch being positioned such that the actuation of the external opening controller of the external escape hatch or the passage of the external escape hatch from the closed position to the open position causes the second opening controller to be actuated.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: January 31, 2017
    Assignee: Airbus Operations SAS
    Inventors: Patrick Salgues, Anne-Laure Neveu
  • Patent number: 9540110
    Abstract: An aeroplane includes an external skin and an internal bulkhead delimiting a cabin, and an escape opening passing through the external skin and the internal bulkhead. The escape opening is closed off by an external escape hatch disposed flush with the external skin. The aeroplane also includes an internal escape hatch that closes off the escape opening disposed flush with the internal bulkhead, and pressure regulating means capable of automatically triggering an opening of the internal escape hatch or a part of the internal escape hatch when a pressure differential on both sides of the internal escape hatch exceeds a determined value.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: January 10, 2017
    Assignee: Airbus Operations SAS
    Inventors: Patrick Salgues, Anne-Laure Neveu
  • Patent number: 9511846
    Abstract: An airplane flight deck which includes an escape opening closed off by an emergency door and an emergency hatch. The emergency hatch comprises a sheeting and a locking/unlocking mechanism configured to take up a locked state in which the sheeting closes off the escape opening and an unlocked state in which the sheeting frees the escape opening.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: December 6, 2016
    Assignee: Airbus Operations (S.A.S.)
    Inventors: Vincent Auriac, Löic Challancin
  • Patent number: 9469389
    Abstract: An aircraft boarding handrail that is affixable to an aircraft fuselage having an entry and exit staircase assembly formed in a cabin door of the aircraft fuselage is disclosed. The aircraft boarding handrail includes a rail member and a mounting structure coupled to the rail member and configured to secure the rail member to the aircraft fuselage. The mounting structure includes a guide pin that interfits with a guide pin slot of a doorframe of the cabin door, a mounting bracket having a notch formed therein constructed to interfit with a staircase support strut mount of the entry and exit staircase assembly, a latch arm coupled to the mounting bracket so as to be rotatable between an open position and a closed position to selectively provide access to and close off the notch, and a quick release pin to lock the latch arm in place when in the closed position.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: October 18, 2016
    Inventor: Michael L. Heinen
  • Patent number: 9447637
    Abstract: A foldable ladder for providing access to an opening including: a first motorized drive mechanism for moving a cover for the opening between a closed position and an open position; a second motorized drive mechanism coupled to a plurality of foldable ladder portions for moving the ladder portions between a folded configuration and an unfolded configuration; such that, in moving the cover between the closed and an open position, the first motorized drive mechanism triggers the second motorized drive mechanism to move the ladder portions between the folded configuration and unfolded configuration.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: September 20, 2016
    Assignee: LOFTEASE ATTIC STAIRS LIMITED
    Inventors: Peter Morrow, Philip Gunning, Sean Canney
  • Patent number: 8763756
    Abstract: The present disclosure provides a system of light weight folding stairs, especially lightweight wooden stairs, designed for installation in the ceiling of a building. For example, the light weight ladder-type stair system may be opened downwards and unfolded towards inside the room located under this ceiling. At least one ladder-type stair section is connected to a flap that fits within a frame in an opening in the ceiling, wherein the flap hinges open to access the folded stair sections. The ladder-type stair section is connected to the flap by a hook-type holder that allows installing the frame in a ceiling opening without the flap, which can be easily and quickly attached during final stage of assembly.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: July 1, 2014
    Assignee: Fakro PP Sp. z o. o.
    Inventors: Boguslaw Kasiński, Bartlomiej Mos
  • Patent number: 8695760
    Abstract: An attic ladder system includes an upper portion that can be extended above the attic floor and a lower portion that can be extended into a room below the attic. The upper portion can extend automatically into the attic upon extension of the lower portion, or may be operated independently of the lower section. Ladder extension can be telescopic or by unfolding of sections. Retraction of either or both ladder portions may include a pivoting capability to reduce vertical height when stored. A gap can be provided between lowest the rungs to avoid danger to a user's hands. Embodiments can be used to access the top of a vehicle roof from within the vehicle. Embodiments can support a user weighing up to 300 pounds. A gas spring can assist in lifting and stowing the lower portion. Pivot latches can secure the ladder in its stowed and deployed configurations.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: April 15, 2014
    Assignee: Appropriate Combined Technologies, LLC
    Inventor: Amos G Winter, IV
  • Patent number: 8622173
    Abstract: A deck deployment system is adapted to facilitate transfer of personnel between spaced elevations. The deck deployment system includes a deck defining a substantially flat and continuous deck surface for supporting personnel. A convertible stairway is hinged to the deck and adapted for movement between a stowed condition and a deployed condition. The convertible stairway includes an adjustable frame assembly and a series of articulating horizontally-disposed foot treads carried by the frame assembly. The foot treads remain substantially horizontal upon movement of the stairway between the stowed condition and the deployed condition. When the stairway is in the stowed condition, the foot treads integrate with the deck to form a substantially flat and continuous portion of the deck surface. When the stairway is in the deployed condition, the foot treads cooperate to form steps extending from the deck to an elevation spaced from the deck surface.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: January 7, 2014
    Assignee: Patriot3, Inc.
    Inventors: Charles Louis Fuqua, Steven Scott Kahre
  • Patent number: 8579081
    Abstract: A remote controlled overhead ladder system including a ladder structure having at least a first section and a second section. The ladder structure can be mounted to a support structure located above an opening of the overhead surface, and can include a remote controlled lifting cable connected to the first and second sections such that upon receipt of a remote control signal, the lifting cable pivots the second section toward a front surface of the first section until the second section is oriented adjacent to the front surface of the first section, at which time the lifting cable pivots the first section and the adjacent second section as a group toward the overhead surface until the ladder sections are contained above the overhead surface.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: November 12, 2013
    Assignee: Precision Ladders, LLC
    Inventors: Steven M. Richey, Roy G. Parton
  • Patent number: 8348015
    Abstract: An access ladder includes a plurality of sections connected together to telescope between an extended position and a retracted position that has an increasing reactive force to counterbalance the weight of the sections as they extend. A method for accessing a room with a ladder connected to a ceiling including the steps of moving the ladder to a fully extended position subject to an increasingly active force to counterbalance the weight of the ladder as it extends. There is the step of retracting the ladder into a retracted position in the ceiling.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: January 8, 2013
    Assignee: Werner Co.
    Inventor: Thomas W. Parker
  • Patent number: 8286752
    Abstract: A folding ladder assembly having a door, a frame, and a strut connecting the door and frame. The strut comprises a first end and a second end opposite the first end. The first end of the strut is attached to the door via a strut stop bracket. The other end of the strut is attached to a stationary mounting plate, which is attached to the ladder opening frame. The strut is attached to the strut bracket via a strut standoff using an E-clip retaining ring. Optionally, the strut standoffs are riveted to the strut stop bracket and the stationary mounting plate. The strut stop bracket is optionally formed having a double bend to form two substantially parallel portions connected by a third non-parallel portion.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: October 16, 2012
    Assignee: Werner Co.
    Inventors: Kevin McIntire, Thomas Ward Parker
  • Patent number: 8272477
    Abstract: Novel stowed staircases for attics and the like that exhibit highly effective fireproof properties are provided. The combination of sheet metal well sides with ceramic paper covering, a combination thermal board and cement-like construction door, coupled with a sealed gasket at the interface of the stair bottom with the ceiling provide the necessary long-term fireproof capabilities as well as facilitation in installation as a sufficiently lightweight article. In such a manner, the inventive stairway construction may be easily incorporated within a residential or other type unit to aid in the simultaneous accessibility to an attic (or like location) and ability to prevent fire from easily spreading into or out of said attic via the stair assembly itself.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: September 25, 2012
    Inventors: Bradley F. Hudspeth, Morris F. Hudspeth, Samuel L. Daniel, John C. Halbach, Frank B. Abbadessa
  • Patent number: 8151936
    Abstract: An access ladder for an access hole in a building includes a plurality of sections which telescope relative to each other between an extended position, where the sections define a plane and a user can climb the sections, and a retracted position where the sections are folded on each other. Several of the sections have a least one step which preferably moves between an unfolded position where the user can stand on the step when the sections are in the extended position, and a folded position when the sections are in the retracted position. Each section slides relative to another section of the plurality of sections which it is in contact in order for the sections to telescope. A method for using an access ladder attached to an end of an access hole of a building.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: April 10, 2012
    Assignee: Werner Co.
    Inventor: Thomas W. Parker
  • Patent number: 8028804
    Abstract: An access panel is shown in the present invention to provide easy and safe access to an attic space or elevated structure. The access panel is fully automatic. During opening, the access panel uses an energizing motor to control the gravitational forces for opening a cover and deploying ladder sections. During closing, the access panel is energized to retract the ladder sections and close the access panel. The motor is energized to close the access panel until a stow latch engages to stow the access panel during non-use. A safety switch is mounted inside the attic space to allow a user to open the panel and extend the ladder should the user be trapped in the attic space.
    Type: Grant
    Filed: November 13, 2007
    Date of Patent: October 4, 2011
    Inventor: Jean-Pierre Lair
  • Patent number: 8028805
    Abstract: An access ladder for accessing a ceiling from a floor. The ladder comprises a plurality of sections which telescope open and closed, and from a bottom section each section telescopes open to positively lock to the section below it with plungers that lock and unlock each section in sequence as the sections open and close, respectively. A method for using an access ladder for accessing a ceiling from a floor.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: October 4, 2011
    Assignee: Werner Co.
    Inventor: Thomas W. Parker
  • Patent number: 7967110
    Abstract: An access ladder includes a plurality of sections connected together to telescope between an extended position and a retracted position that has an increasing reactive force to counterbalance the weight of the sections as they extend. A method for accessing a room with a ladder connected to a ceiling including the steps of moving the ladder to a fully extended position subject to an increasingly active force to counterbalance the weight of the ladder as it extends. There is the step of retracting the ladder into a retracted position in the ceiling.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: June 28, 2011
    Assignee: Werner Co.
    Inventor: Thomas W. Parker
  • Patent number: 7841448
    Abstract: An access panel is shown in the present invention to provide easy and safe access to an attic space or elevated structure. The access panel is fully automatic. During opening, the access panel only uses gravitational forces for opening a cover. Only during closing is the access panel motorized. The gravitational forces are used to both open the cover and extend the ladder sections, while the motor is only used to retract the latter sections and close the cover. A stow latch keeps the cover closed during non-use. A safety switch keeps the access panel from accidentally opening and the ladder sections from lowering if the stow latch is released. A mechanical lock keeps the cover open when the ladder sections have been lowered.
    Type: Grant
    Filed: February 6, 2007
    Date of Patent: November 30, 2010
    Inventor: Jean-Pierre Lair
  • Patent number: 7806233
    Abstract: An access ladder for an access hole in a building includes a plurality of sections which telescope relative to each other between an extended position, where the sections define a plane and a user can climb the sections, and a retracted position where the sections are folded on each other. Several of the sections have a least one step which preferably moves between an unfolded position where the user can stand on the step when the sections are in the extended position, and a folded position when the sections are in the retracted position. Each section slides relative to another section of the plurality of sections which it is in contact in order for the sections to telescope. A method for using an access ladder attached to an end of an access hole of a building.
    Type: Grant
    Filed: December 9, 2004
    Date of Patent: October 5, 2010
    Assignee: Werner Co.
    Inventor: Thomas W. Parker
  • Patent number: 7748498
    Abstract: An access ladder for accessing a ceiling from a floor. The ladder comprises a plurality of sections which telescope open and closed, and from a bottom section each section telescopes open to positively lock to the section below it with plungers that lock and unlock each section in sequence as the sections open and close, respectively.
    Type: Grant
    Filed: October 19, 2005
    Date of Patent: July 6, 2010
    Assignee: Werner Co.
    Inventor: Thomas W. Parker
  • Publication number: 20100089695
    Abstract: A folding ladder assembly having a door, a frame, and a strut connecting the door and frame. The strut comprises a first end and a second end opposite the first end. The first end of the strut is attached to the door via a strut stop bracket. The other end of the strut is attached to a stationary mounting plate, which is attached to the ladder opening frame. The strut is attached to the strut bracket via a strut standoff using an E-clip retaining ring. Optionally, the strut standoffs are riveted to the strut stop bracket and the stationary mounting plate. The strut stop bracket is optionally formed having a double bend to form two substantially parallel portions connected by a third non-parallel portion.
    Type: Application
    Filed: October 8, 2009
    Publication date: April 15, 2010
    Inventors: Kevin McIntire, Thomas Ward Parker
  • Patent number: 7621374
    Abstract: A sectional overhead ladder with a fold assist feature for controlling the extension of the sectional overhead ladder. The fold assist feature of the sectional overhead ladder limits the possibility of free extension of the extendable overhead ladder by preventing gravitational forces from causing the ladder sections to fall into their extended configuration. The sectional overhead ladder includes generally a stair structure and an extendable dampening system. The extendable dampening system is comprised of a dampener and, optionally, a housing. The stair structure includes a first section and a second section. The dampening system is attached to the first and second sections of the stair structure such that the dampener limits the free extension of the stair structure and assists with the collapse of the stair structure.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: November 24, 2009
    Assignee: Precision Ladders, LLC
    Inventor: Steven M. Richey
  • Patent number: 7497773
    Abstract: A ceiling mounted fan ventilation device moves a fresh inflow of air from within a room such as a garage to said attic thereof in an effective manner in order to mitigate the climatic effects on the room due to adverse ambient conditions. The device is not only capable of moderating the temperature of the room, but also augments the existing ventilation system for the attic enclosure. The device may utilize the existing hole of an attic access means such as a disappearing stairway or scuttle hole thus negating the need for extensive modifications to an existing ceiling structure. Alternatively, a method is disclosed herein whereby the fan ventilation device may be mounted directly to the ceiling portion of the room. The device may be implemented in any type of room wherein it is desirous to maintain a fresh flow of air therethrough.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: March 3, 2009
    Inventor: Gary D. Schmidt
  • Publication number: 20080179137
    Abstract: A pre-compressed gas strut assembly and method of installing it for use as the extension and retraction part of a folding ladder configured for installation in an opening, such as an opening in a ceiling of a house or other building. The pre-compressed gas strut has holding members attached to end caps having radial protrusions arranged on opposite ends of the gas strut that maintain the gas strut in a compressed position during installation of the attic ladder assembly.
    Type: Application
    Filed: January 8, 2008
    Publication date: July 31, 2008
    Inventors: Brett A. Latimer, Robert D. Beggs
  • Patent number: 7357223
    Abstract: A platform lift system includes a mounting frame that is fixedly engaged into a scuttle hole formed in a horizontal supporting surface (i.e., attic floor or room ceiling) and a foldable ladder that is supported by the frame. A separate trolley carries a lift platform that may be selectively raised or lowered in order to transport objects to/from the attic space. The trolley is moveable horizontally along a track that may be provided on a floor of the attic space. At a first end of travel of the trolley along the track, the trolley is disposed laterally alongside and vertically offset from the mounting frame such that the space above the mounting frame is unimpeded to permit a user to access the attic space using the deployed ladder. At a second end of travel of the trolley along the track, the trolley is aligned vertically with the mounting frame to permit use of the lift platform.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: April 15, 2008
    Assignee: Spacelift Products, Inc.
    Inventor: Jay P. Penn
  • Publication number: 20080023269
    Abstract: An access ladder includes a plurality of sections connected together to telescope between an extended position and a retracted position that has an increasing reactive force to counterbalance the weight of the sections as they extend. A method for accessing a room with a ladder connected to a ceiling including the steps of moving the ladder to a fully extended position subject to an increasingly active force to counterbalance the weight of the ladder as it extends. There is the step of retracting the ladder into a retracted position in the ceiling.
    Type: Application
    Filed: July 27, 2006
    Publication date: January 31, 2008
    Inventor: Thomas W. Parker
  • Patent number: 7165649
    Abstract: A support frame for a folding ladder, a folding ladder positioning system, and a method for installing a folding ladder, are disclosed and pertain to folding ladders disposable within an opening, such as openings in a ceiling of a house, to provide temporary access between one floor or space and another floor or space. In one aspect, a support frame includes a plurality of separable support frame plates collectively configured to circumscribe the opening and a plurality of connection sites are disposed at opposing ends of each of the plurality of separable support frame plates to facilitate connection of each support frame plate to adjacent support frame plates. The connection sites include, for example, mating locking connectors or a plurality of matching through-holes, which permit insertion of a fastening means therethrough.
    Type: Grant
    Filed: August 7, 2003
    Date of Patent: January 23, 2007
    Assignee: Werner Co.
    Inventors: Brett A. Latimer, Ronald K. Burig, Christine A. Brown, David E. Plotner, John J. Fiumefreddo, Roy B. Bendickson, David A. Winslow
  • Patent number: 7159693
    Abstract: A novel escape system comprised of a plurality of escape devices each which resemble a window shutter, are mounted on the outside of a building, adjacent the windows vertically above the next lower escape device. Since these take up no space inside of the building, and are aesthetically pleasing, they are less likely to be removed or overridden making them functional a greater percentage of the time. Each is comprised of a frame to hold a plurality of slats connected to a collapsible vertical connecting means a predetermined distance apart from the others. In its storage position, the slats are held in the frame in an angled position resembling louvers. When in the operational position, the slats are allowed to drop down out of the frame and extend down to the next lower escape device with the slats acting as steps of a ladder. The bottommost end of the escape device connects to the top of the next lower escape device to create a continuous escape system allowing egress from any floor to the ground.
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: January 9, 2007
    Inventor: Mark D. Mettler
  • Patent number: 7140466
    Abstract: A platform lift system includes a mounting frame that is fixedly engaged into a scuttle hole formed in a horizontal supporting surface (i.e., attic floor or room ceiling) and a foldable ladder that is supported by the frame. A separate trolley carries a lift platform that may be selectively raised or lowered in order to transport objects to/from the attic space. The trolley is moveable horizontally along a track that may be provided on a floor of the attic space. At a first end of travel of the trolley along the track, the trolley is disposed laterally alongside and vertically offset from the mounting frame such that the space above the mounting frame is unimpeded to permit a user to access the attic space using the deployed ladder. At a second end of travel of the trolley along the track, the trolley is aligned vertically with the mounting frame to permit use of the lift platform.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: November 28, 2006
    Assignee: Spacelift Products, Inc.
    Inventor: Jay P. Penn
  • Patent number: 6994184
    Abstract: A folding ladder is configured for installation in an opening to provide access between one floor or space and another floor or space. The folding ladder includes, in one aspect, an upper ladder section having a left ladder rail and a right ladder rail, a lower ladder section having a left ladder rail and a right ladder rail, a hinge rotatably connecting the upper ladder section ladder rails to the lower ladder section ladder rails, and a plurality of steps rotatably disposed between the upper and lower ladder rails. The plurality of steps are configured for rotation between a retracted position and a deployed position. At least one step disposed between the upper ladder rails and at least one step disposed between the lower ladder rails are linked by at least one linkage member so that each of the noted steps rotates between a retracted position and a deployed position upon rotational movement of the upper ladder section relative to the lower ladder section between a closed position and an open position.
    Type: Grant
    Filed: December 12, 2003
    Date of Patent: February 7, 2006
    Assignee: Werner Co.
    Inventors: Brett A. Latimer, Ronald K. Burig, Christine A. Brown, David E. Plotner, John J. Fiumefreddo, Roy B. Bendickson
  • Patent number: 6986485
    Abstract: An overhead area access staircase system (10) for an aircraft (12) includes an aircraft overhead module (20) and multiple stair segments (40). The stair segments (40) are actuated relative to each other when deployed and are configured to be in proximity with the overhead module (20). The stair segments (40) are in contact with the overhead module (20) when deployed. The stair segments (40) include step elements (42) and support members (44) coupled thereto.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: January 17, 2006
    Assignee: The Boeing Company
    Inventor: Jeffrey D. Farnsworth
  • Patent number: 6966153
    Abstract: A thermal insulating cover is presented. The cover includes a top, a plurality of sides extending from the top and a wide base perimeter extending from the plurality of sides. The device may be formed as a unitary piece, or may be provided in two or more sections which are easily assembled together. A piece of foam, acting as a gasket may be affixed to the base perimeter.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: November 22, 2005
    Assignee: Atticap Corporation
    Inventors: Paul Panetta, Dave Peterson, Jordan Beaumont
  • Patent number: 6962236
    Abstract: A platform lift system includes a mounting frame that is fixedly engaged into a scuttle hole formed in a horizontal supporting surface (i.e., attic floor or room ceiling) and a foldable ladder that is supported by the frame. A separate trolley carries a lift platform that may be selectively raised or lowered in order to transport objects to/from the attic space. The trolley is moveable horizontally along a track that may be provided on a floor of the attic space. At a first end of travel of the trolley along the track, the trolley is disposed laterally alongside and vertically offset from the mounting frame such that the space above the mounting frame is unimpeded to permit a user to access the attic space using the deployed ladder. At a second end of travel of the trolley along the track, the trolley is aligned vertically with the mounting frame to permit use of the lift platform.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: November 8, 2005
    Assignee: Spacelift Products, Inc.
    Inventor: Jay P. Penn
  • Patent number: 6886661
    Abstract: A ladder apparatus for providing access to an area over an elevated structure, the ladder apparatus including a housing secured to the elevated structure wherein the housing includes a housing mechanism having a central opening, a ladder pivotally mounted to the housing mechanism wherein the ladder includes a first ladder section and at least one additional ladder section slidingly mounted to the first ladder section, first motorized deploying mechanism structured to pivotally displace the ladder to and from a stored configuration and a partially deployed configuration, second motorized deploying mechanism structured to linearly displace the at least one additional ladder section to and from a partially deployed configuration and a fully deployed configuration; and control mechanism structured to operatively control the first and second motorized deploying mechanism.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: May 3, 2005
    Inventor: William D. Battenberg
  • Patent number: 6868942
    Abstract: An emergency escape system includes an escape apparatus and a door. The escape apparatus is connected to the door. The escape apparatus includes a cord and a release mechanism. The release mechanism is configured to provide a controlled lowering of a person being lowered on the cord.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: March 22, 2005
    Assignee: Double Exit Ltd.
    Inventors: Yoav Barzilai, Rafi Salhov
  • Patent number: 6866118
    Abstract: A ladder apparatus for providing access to an area over an elevated structure, the ladder apparatus including a housing secured to the elevated structure; a ladder pivotally mounted to the housing, the ladder means including an upper ladder section and at least one lower ladder section mounted to the upper ladder section; and a motorized deploying mechanism structured to controllably allow the ladder apparatus to be pivotally and gravitationally deployed from a stowed configuration to a partially deployed configuration, controllably allow the at least one lower ladder section to be longitudinally and gravitationally deployed from the partially deployed configuration to a fully deployed configuration, longitudinally retract the at least one lower ladder section from the fully deployed configuration to the partially deployed configuration, and pivotally retract the ladder apparatus from the partially deployed configuration to the stowed configuration.
    Type: Grant
    Filed: June 21, 2004
    Date of Patent: March 15, 2005
    Inventor: William D. Battenberg
  • Patent number: 6802392
    Abstract: A stair is pivotable from a lowered position allowing a user to climb the stair from a lower level to an upper level, into a stowed position wherein the stair is lifted from the lower level so that the plane of the stair is approaches the ceiling situated between the lower and upper level. The stair, which is preferably not articulated (i.e., the stair does not fold), rotates between the lowered and stowed positions about a pivot fixed in association with the ceiling. A drive cable, which preferably extends from the stair top or from a drive arm extending from the stair top, is anchored to surrounding structure in the upper level. A drive motor drives the drive cable to draw the stair top downwardly, thereby raising the stair bottom about the pivot.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: October 12, 2004
    Inventor: Gene S. Davis
  • Publication number: 20040055819
    Abstract: A thermal insulating cover is described along with a method of manufacturing a cover for use over a set of attic stairs, when they are retracted into the ceiling. The cover is made of two major protective surfaces, surrounding a insulating material to form a blanket, that is then cut and folded to form a box, that is fastened together to form the cover.
    Type: Application
    Filed: September 23, 2002
    Publication date: March 25, 2004
    Inventors: James Patrick Lynn, Dorothy June Lynn
  • Patent number: 6662901
    Abstract: A control apparatus for a folding ladder or stairway. The control apparatus comprises a control base attachable to a section of the ladder and a control arm pivotally attached to the control base. The control arm has a distal end which may be gripped by an operator to manipulate the ladder between folded and unfolded positions while the operator is positioned away from the ladder so that unexpected pivotation of ladder sections cannot result in the ladder sections striking the operator. A clamp may be attached to the ladder to retain the distal end of the control arm when not in use. The control arm is telescoping and may be positioned in any of a variety of extended positions. A lock is provided to lock the telescoping control arm at a desired length.
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: December 16, 2003
    Inventor: Franklin J. Appl
  • Patent number: 6578664
    Abstract: A quick release latched security window guard having a framework attached to a building exterior overlying a window is held with a cam latch system including a cam rod extending through the building wall, with an end protruding into a hollow member forming a part of the framework. A sliding latching sleeve is spring urged into a slot in the cam rod end to lock the framework in place. Rotation of a handle on the rod end within the building forces the sleeve back to be cammed out of the slot to release the framework. One or more fixed slotted latching posts may also be mounted to protrude into the hollow member and to be engaged by portions of the sleeve to form additional latching points, all of which are released by the rotation of a single cam rod. The framework may take the form of one or more ladder sections deployed to hang down from the window when the framework is pushed out after being released by the operation of the cam rod.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: June 17, 2003
    Inventor: Stuart Doherty
  • Patent number: 6439342
    Abstract: An apparatus having one or two steps at the election of a user. The apparatus is stored under a counter in a space that is normally wasted. When in its single step configuration the apparatus has a generally parallelepiped appearance and includes a transversely disposed front wall, longitudinally extending side walls, a transversely disposed rear wall, and a top wall that provides a first step. A folding line formed in the top wall enables a trailing section of the structure to be rotated until the rear wall lies in a horizontal plane and provides a second step. A transverse rod facilitates rotation of the second step and the transverse rod supports the second step after it has been deployed. The rod has a telescoped construction and permits lowering of the second step when the user exerts an axial force against the rod.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: August 27, 2002
    Inventor: Carol E. Boykin
  • Publication number: 20020112409
    Abstract: A method and apparatus for insulating apertures is disclosed. An insulating dome is placed over these apertures and can be locked into place, thereby providing insulation for the aperture. The apertures that are typically uninsulated are hidden stair openings and whole-house fans, plywood attic access passageways or other openings. The insulating dome can be lifted automatically once the hidden folding stair is opened or the whole-house fan is used.
    Type: Application
    Filed: January 18, 2002
    Publication date: August 22, 2002
    Inventor: Stacey Glenn Knowles
  • Patent number: 6014841
    Abstract: A cover apparatus (10) is provided which is easily and quickly installed, is simple to use, and is cost effective for selective closing of an attic opening (14) and for providing a thermal and dust barrier. The cover apparatus (10) preferably includes structure (12), adapted for placement over an opening (14) defined by peripheral wall or ceiling surfaces (16), and a plurality of snap fasteners (18a, 18b, 18c, 18d) for detachably coupling the structure (12) to the surfaces (16). The structure (12) includes a panel (20) presenting an inboard face (22), continuous, circumscribing sidewalls (24) extending from the inboard face (22) of panel (20), and a continuous, circumscribing flange (32) extending transversely and outwardly from the outer margin (28) of the sidewalls (24). The flange (32) includes an outermost lip (36) configured for firmly engaging the surfaces (16) when the structure (12) is coupled to the surfaces (16).
    Type: Grant
    Filed: June 1, 1998
    Date of Patent: January 18, 2000
    Inventors: George W. McCoy, Jr., George W. McCoy, Sr.
  • Patent number: 5893431
    Abstract: A basement emergency exit assembly has a ladder for exiting from a basement window. The window is held within tracks mounted at the interior of the window frame. By moving the bottom of the ladder away from the wall, the window is permitted to slide down the track out of its frame and the ladder is positioned at an angle for easy egress. The window can either fall directly into a pocket within a wall, or, the tracks can be swung out as the ladder is moved thereby pulling the window out of frame and causing it to slide along the tracks until it is clear of the window opening.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: April 13, 1999
    Inventors: David Maxwell Cranswick, Keith S.J. Neumark
  • Patent number: 5628151
    Abstract: Openings such as those for attic staircases may be covered with a multipocket member having top, side, and end pockets in which insulation can be placed. The side pockets are of longer length than the top pocket. When the side and end pockets are pivoted downwardly from the top pocket and provided in box-like configuration, the insulation at the pivot edges is compressed thereby filling up these edges.
    Type: Grant
    Filed: November 15, 1994
    Date of Patent: May 13, 1997
    Inventor: Alan N. Monat
  • Patent number: 5623795
    Abstract: A draft insulator kit for use with an attic pull-down staircase comprises a dimensioned enclosure held together with plastic rivets and resting on weather stripping placed directly on the framing around the pull-down staircase. The edge of the box rests on the weather stripping to seal against drafts. The insulator can be covered with fiberglass batting to increase R value but is itself a cost-effective seal against drafts. It can be folded for increased shipping efficiency, is made of low cost cardboard, and has low manufacturing costs. As a result, its payback time to the consumer is less than one season.
    Type: Grant
    Filed: June 5, 1996
    Date of Patent: April 29, 1997
    Inventor: Herman M. Padgett, Jr.
  • Patent number: 5395075
    Abstract: A stair and stairwell construction for interconnecting two different decks, especially in an aircraft, includes stair treads, stringers, and a stairwell enclosure or housing. At least one of the just enumerated components is constructed to be positionable or tiltable relative to the planes defined by the decks. One of these components is positionable into an open position, thereby providing a passageway, or into a closed position thereby blocking the passageway. In both positions, this positionable component is lockable.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: March 7, 1995
    Assignee: Deutsche Aerospace Airbus GmbH
    Inventors: Wilfried Sprenger, Ralf Schliwa, Hans-Juergen Mueller
  • Patent number: 5343977
    Abstract: An improved safety shield for permanent ladders of the type having a pair of side rails and a plurality of rungs permanently secured to a support structure such as storage tanks, smoke stacks, television towers, tall buildings, bins and silos, the shield includes a front plate having two longitudinal side edges, a pair of side flanges, each of which extends rearwardly and outwardly from one of the side edges in angular relationship thereto. A hinge means connects a first of the side flanges and the front plate along juxtaposed side edges and at least one support bracket connects the first side flange to the ladder. The front plate has an opening and is movable between a first open position and a second closed position wherein the front plate, side flanges, and supporting structure substantially enclose the ladder to prevent unauthorized access thereto.
    Type: Grant
    Filed: May 19, 1992
    Date of Patent: September 6, 1994
    Inventor: Robin R. Bryan
  • Patent number: 5220757
    Abstract: A thermal stairway cover is disclosed for insulating a stairway opening containing a pull-down, ceiling stairway leading to an attic. A plate is movable between a first position which closes the cover and reduces heat transfer therethrough and a second position where the cover is open to provide access through the stairway opening to the attic.
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: June 22, 1993
    Assignee: Colorcraft, Inc.
    Inventor: Jeffrey A. Hulligan
  • Patent number: 5174411
    Abstract: A loft ladder which can be pivotally and slidably mounted to loft opening has counterbalancing means including a resiliently biased pivotal arm, connected to the loft ladder by a link member pivotally connected between the pivotal arm and the loft ladder to allow the ladder to turn about is pivotal connection to the loft opening over at least a limited extend. The arm has a two-stage resilient biasing spring offering a greater resilient force over part of the range of movement of the arm. A hand rail of the ladder is supported on a section of the ladder by spacers allowing the hand rail to be carried at a lateral distance from the ladder stile greater than the lateral space occupied by the counterbalance mechanism. A releasable catch for retaining two ladder parts in a selected position comprises two moveable catch members mounted on respective stiles, and interconnected together.
    Type: Grant
    Filed: September 26, 1991
    Date of Patent: December 29, 1992
    Assignee: Abru Aluminium Limited
    Inventors: David P. Oliver, David Shrimpton
  • Patent number: 5131492
    Abstract: A collapsible folding step-stool which is mountable to a cabinet door. The step stool comprises (1) a bracket mountable to the cabinet door; (2) a platform movable between a lowered, generally horizontal, operative position and a raised, generally vertical, inoperative position; (3) a plurality of parallel arms attached at their first ends to the platform and pivotally coupled at their second ends to the bracket; and (4) a plurality of parallel support legs movable between a generally vertical operative position perpendicular to the platform and a generally vertical inoperative position parallel with the platform and the bracket. The support legs have upper ends pivotally coupled to the platform and lower ends which, when the platform is in the operative position, are adapted to rest on the floor with the lower ends of the legs at a lower elevation than the bottom of the bracket.
    Type: Grant
    Filed: March 5, 1991
    Date of Patent: July 21, 1992
    Inventors: Anthony D. Caminiti, Judith A. Caminiti