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| Number | Title | Issue Date |
| 7367159 | Dual overhead track for a sliding door A sliding door for selectively opening and closing an opening. The door comprises a first guide track defining a first linear guide path and a second guide track defining a second linear guide path. The second guide track is spaced from the first guide track. The do... | 05/06/2008 |
| 7350332 | Wall-mounted sliding door system and method A sliding wall-mounted interior door system that includes a telescoping door actuating mechanism that is attached to the upper portion of the door, and a roller assembly that extends horizontally from the wall and engages a track in the lower portion of the door. Th... | 04/01/2008 |
| 7331141 | Automatic door control apparatus The present invention provides a control apparatus for automatic sliding doors that can be used with a plurality of door brands and models. The invention includes a control box and an idler pulley mounted to the door header. Both the control box and idler pulley can... | 02/19/2008 |
| 7270218 | Sealing device for elevator door A device moves a door seal for a displaceable door panel of an elevator car in an elevator installation with an elevator shaft having shaft doors. The movable door seal is arranged so that the door panel in a closed state is sealed off. The device includes an entrai... | 09/18/2007 |
| 7232012 | Elevator shaft door An elevator shaft door having a door panel composed of a front wall and rear wall, which walls are connected together by a thermally releasable material, wherein at least a part of the closing edge of the respective door panels consists of a profile member that is f... | 06/19/2007 |
| 7162835 | Gravity safety door for an apparatus for manufacturing or inspecting semiconductors An apparatus for manufacturing or inspecting semiconductors comprising a main body, an opening arranged in the main body, and a safety door. The safety door includes a first door element for covering a first portion of the opening and a second door element for cover... | 01/16/2007 |
| 7143870 | Elevator hall door and door hanger apparatus A door panel comprises a surface board 11 facing a hoistway, a back board 12 facing a hoistway, and a reinforcing member 13 for reinforcing the surface board 11 and the back board 12 . The back board is connected to the surface boa... | 12/05/2006 |
| 7128120 | Assembly of sashes for sliding glass doors An assembly of sashes containing investitures, such as venetian blinds and/or mesh screens, for application adjacent the inside surfaces of sliding glass doors. In one embodiment, the sashes are suspended from inner and outer tracks of a rail in sliding overlapping ... | 10/31/2006 |
| 7117636 | Simultaneously operating self balanced hung window A hung window includes upper and lower sashes that may operate simultaneously. Two or more pulleys or rollers are mounted at each lateral side of the window frame. A cable interconnects each lateral side of the upper and lower sashes. The cables are routed over the ... | 10/10/2006 |
| 7040056 | Gear shaft assembly A gear shaft assembly for actuating linear movement of an object, including a lower channel assembly, which includes: (a) a threaded rod; (b) a first gear adjacent an end of the threaded rod; (c) a second gear engageable with the first gear and attached to the end o... | 05/09/2006 |
| 7004516 | Lock latch mechanism for transit vehicle door system A lock latch mechanism disposed within a powered locking device of a transit vehicle door system for maintaining a lock lever in an unlock position without the aid of the lock actuator. The lock latch mechanism includes a lock latch lever biased for engagement with ... | 02/28/2006 |
| 6990771 | Inertial control system for opening and closing multiple sliding doors in a common direction An access system for a building structure includes an access opening formed in the structure and a horizontally oriented track extending across the opening. Panels are slidably mounted on the track. A pulley—track system opens and closes the panels. The system is ... | 01/31/2006 |
| 6968645 | Sliding service window In accordance with one embodiment of the present invention, a sliding, bi-parting, service window may be operated by pressing on a push operator. In response to such push operation, a pair of bi-parting windows may be caused to slide apart sufficiently to provide a ... | 11/29/2005 |
| 6941701 | Side sliding door device for vehicle A side sliding door device is provided for a vehicle that opens and closes an entrance on a side of the vehicle by a sliding door movably supported on a horizontal door rail. The sliding door device includes an automatic locking mechanism that is interlocked with a ... | 09/13/2005 |
| 6912812 | Sliding door apparatus A side sliding door apparatus for an electric railcar includes a side sliding door suspended from a horizontal door rail with a C-shape cross-section. The side sliding door is capable of moving freely via a door roller, and a gap is formed between the door roller an... | 07/05/2005 |
| 6863001 | Side sliding door apparatus for electric railcar A sliding door apparatus has a sliding door movably supported on a horizontal door rail for opening and closing an entrance of a vehicle, i.e. railroad car. The sliding door is locked when a latch member engages a fixing member disposed on the sliding door. When an ... | 03/08/2005 |
| 6854399 | Side sliding door apparatus for electric railcar A side sliding door apparatus for an electric railcar includes two sliding doors movably supported by a horizontal door rail to open and close an entrance of the electric railcar. The side sliding door apparatus includes an actuator for actuating the sliding door, a... | 02/15/2005 |
| 6712406 | Lock latch mechanism for transit vehicle door system A lock latch mechanism disposed within a powered locking device of a transit vehicle door system for maintaining a lock lever in an unlock position without the aid of the lock actuator. The lock latch mechanism includes a lock latch lever biased for engagement with ... | 03/30/2004 |
| 6662500 | Train door apparatus A door apparatus for opening and closing two doors supported on a horizontal door rail includes an actuator connected to one of the two doors for driving the same, a direction conversion mechanism connected to the other of the two doors for transmitting a... | 12/16/2003 |
| 6209612 | Locking device for a door system Door system with a locking device which has top and bottom locking elements which can be displaced by a drive unit to realize a door system which is simple and easy to install, whereby the functional and operational reliability of the system are increased... | 04/03/2001 |
| 6134838 | Power door having a drive member disposed within a hanger portion and rollers of a door support engaging the hanger portion for motion therealong A power door for a transit vehicle includes a door panel, a base and hanger unit, a door support, a drive member and a motor. The door support is attached to the door panel and includes at least one roller which engages a hanger portion of the base and ha... | 10/24/2000 |
| 6038819 | Powered drive assembly A powered drive assembly for positioning various slidable components within a vehicle interior. The powered drive assembly includes a motor assembly operably coupled to a flexible flocked drive cable which is supported for rotation within a housing. The f... | 03/21/2000 |
| 6021871 | Apparatus for opening and closing a car door and a shaft door of an elevator installation An apparatus for opening and closing a car door and a shaft door of an elevator installation includes an entraining system (E) arranged at the car door and a cooperating locking mechanism (L). The entraining system (E) has a pair of spreadable entraining ... | 02/08/2000 |
| 5974737 | Self-opening entry device for a controlled access area A self-opening and self-closing device enabling entry into a controlled access area includes a gate with two laterally retractable panels that may be opened by inserting a ticket or access card into a control mechanism. Each of the panels is controlled by... | 11/02/1999 |
| 5894911 | Car door locking system Microprocessor-based car door locking system includes an electromechanical door lock for elevator car doors having a latch-type rotary solenoid to move a plunger into locked and unlocked positions. In the locked position, the plunger engages a bracket mou... | 04/20/1999 |
| 5701701 | Safety gate A safety gate is provided for limiting access to a work area. The safety gate includes a linkage pivotally connected to a support, and front and rear gates each being pivotally connected to one end of the linkage. As the linkage pivots about the support t... | 12/30/1997 |
| 5701973 | Linear belt door operator Disclosed is a door operator mounted in a space between a cab fascia and a sill edge plane. A feature of the door operator is a drive unit connected to a drive pulley, the drive unit being mounted in a central portion of the door operator, wherein the dri... | 12/30/1997 |
| 5690189 | Apparatus and method for locking and unlocking the door of an elevator car An apparatus for locking the door of an elevator car includes a lock (12) that locks the car door, a guide surface (9) in the elevator shaft at each landing and a linkage (6) operating the lock (12). The linkage includes an operating lever (17) which, whe... | 11/25/1997 |
| 5678384 | Rapid assembly secure prefabricated building A novel, rapid assembly secure burglar resistant building construction. More particularly, this invention pertains to a unique and inexpensive prefabricated building which is constructed of unique wall panels, floor and roof truss systems, secure locking ... | 10/21/1997 |
| 5659160 | Linear belt door operator Disclosed is a door operator mounted in a space between a cab fascia and a sill edge plane. A feature of the door operator is a drive unit having a drive shaft, the drive unit being mounted in a central portion of the door operator, wherein drive pulleys ... | 08/19/1997 |
| 5441325 | Vanity mirror with opposed sliding covers A vehicle accessory such as a visor includes a body with a vanity mirror frame and mirror mounted thereto. A pair of opposed covers are slidably coupled to the mirror frame and are coupled together such that movement of one cover between an open and close... | 08/15/1995 |
| 5377785 | Door closing system A door closing system for subsequent installation on an automatic sliding door of an elevator car is coupled, at floor stops, via cams and couplings with the hoistway door and is opened and closed together therewith, wherein the closing system prohibits o... | 01/03/1995 |
| 5326211 | Airlock system An air lock system for the transfer of large containers into a containment comprises a set of horizontally and vertically slidable doors adapted to define a variable opening for the passage of containers. The set of doors cooperate with a further precedin... | 07/05/1994 |
| 5301994 | Dual synchronous opening mirror doors for sun visors A hollow visor is provided which is adapted to receive a mirror and which defines a channel. A plurality of doors are provided which are located within the visor and which are movable within the channel for selectively moving between an extended position ... | 04/12/1994 |
| 5199216 | French casement window operator An operator for a French casement window having an operating arm with a roller mounted at its end and pivotable to move in an arc between extended and retracted positions, and a channel member horizontally mountable on the inner side of one sash and confi... | 04/06/1993 |
| 5139112 | Elevator car door lock An elevator door system utilizes a cam to unlatch hoistway doors. The cam is required by code to have a greater swing motion than is required to unlock the hoistway doors. A mechanism follows the motion of the cam and locks the car doors when the cam is b... | 08/18/1992 |
| 5005673 | Coordinated elevator car door-hall door movement Movable vanes mounted on the exterior of an elevator car door engage rollers on the interior of the hallway door as the car door commences to open. Subsequent opening and closing movement of the car and the hallway doors occurs simultaneously and at the s... | 04/09/1991 |
| 4934488 | Door lock for an elevator car A door lock for an elevator car has a latch which is linked with a pivot arm which is pivotably mounted on the elevator car. The latch and the pivot arm can rotate together between a latched position, in which the doors are locked by the latch, and an unl... | 06/19/1990 |
| 4787111 | Selectively-retractable elevated walkway extension A selectively positionable extension for an elevated walkway includes a planar ramp mounted by rollers to a frame and coupled to the frame by a selectively extensible hydraulic ram. The frame itself is supported by a second ramp for controlled vertical po... | 11/29/1988 |
| 4580413 | Pressurized fluid lift system for a cryogenic freezer A cooling and or freezing tunnel is described having a toggle linkage and a pressurized fluid drive to open and close a plurality of openable sections of the tunnel for access and cleaning of the interior. The toggle linkages provide more accurate and rel... | 04/08/1986 |
