Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 8136299 | Sliding door opening/closing device for vehicle The present invention provides a sliding door opening/closing device for a vehicle that applies a sufficient opening/closing drive force to the left and right sliding doors and reduces a force necessary to lock and unlock the latch, despite a simple configuration of... | 03/20/2012 |
| 7370731 | Device for connecting a car door with a shaft door and for locking and unlocking the doors, a device for emergency unlocking of a car door and a method for emergency unlocking of a car door A device for connecting a car door with a shaft door and for emergency unlocking of a car door consists of an entrainer arranged at the car door, which entrainer detachably connects, together with a roller pair arranged at the shaft door, the car door with the shaft... | 05/13/2008 |
| 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 |
| 7290369 | Device for the synchronized actuation of sliding doors A device for the synchronized actuation of sliding doors, provided for two sliding doors moving indistinctly in the same plane or in two planes forming any angle, consisting of two pairs of cogwheels (8-8′) and (9-9′) between which th... | 11/06/2007 |
| 7254918 | Emergency unlocking device for locking and unlocking systems for swinging sliding doors, in particular of rail vehicles An emergency unlocking device for locking and unlocking systems for swinging sliding doors, in particular of rail vehicles. The emergency unlocking device has a traction device that engages on a first spring-loaded pivoted lever that is connected via a second lever ... | 08/14/2007 |
| 7252179 | Elevator-door latching and opening device Elevator doors have operating bars that are pivoted on a car door and that serve to actuate shaft-door actuating rollers that operate shaft doors. These doors are operated by an apparatus having an actuating device that changes a spacing between the operating bars a... | 08/07/2007 |
| 7246688 | Elevator door system An elevator door system includes an elevator car having a front face defining a door opening. At least one elevator door is coupled to the front face of the elevator car for movement between an open position exposing the door opening and a closed position covering t... | 07/24/2007 |
| 7228804 | Door system for transit vehicle utilizing compression lock arrangement A locking arrangement for a door system of a transit vehicle includes a combination of a lock mechanism and an electromagnetic brake. The lock mechanism enables positive locking of at least one door but does not require substantial contact between moving and station... | 06/12/2007 |
| 7219950 | Sliding door assembly A vehicle door assembly is provided. The door assembly is located on vehicle and includes at least first and second doors each movable between open and closed positions. A door slide assembly is coupled to the vehicle and comprises a traversing segments assembly. Th... | 05/22/2007 |
| 7210268 | Unlock mechanism for a rotary door operator An unlock mechanism for a rotary door operator of a transit vehicle includes a pivotally disposed unlock member adapted for rotating a lock member into an unlock position and activating a valve for discharging the fluid pressure from the drive cylinder to enable man... | 05/01/2007 |
| 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 |
| 7156210 | Freight elevator landing door control A control system for a motorized freight elevator landing door in which all of the doors in a single line of a hoistway are controlled with one set of proximity sensors carried on the elevator car. The sensors signal a controller that operates electric motors for op... | 01/02/2007 |
| 7155861 | Sliding door having lateral keeper A top-supported sliding door system or a vertically sliding door system achieves an enhanced air seal with a lateral keeper mechanism on either or both of the trailing and leading edges. On an outward lateral edge of a door panel, a keeper projects inwardly toward t... | 01/02/2007 |
| 7143871 | Elevator roller guide and rail assembly An elevator door assembly includes a rail and at least one roller that rolls along the rail to move a door between opened and closed positions, for example. A resilient track is provided on the rail that facilitates more efficient roller movement and increases the l... | 12/05/2006 |
| 7121042 | Door assembly for sealing a chamber A door assembly providing an airtight seal for a chamber. The door assembly includes a link assembly that allows a door to move inward toward a gasket sealing an opening into the chamber. ... | 10/17/2006 |
| 7069696 | Assembly An assembly including a door panel, a window regulator housing component, and a window regulator drive system component. The door panel is secured to the window regulator housing component by a deformed portion to provide a subassembly. The deformed portion is utili... | 07/04/2006 |
| 7059084 | Garage door opener An automated garage door opener for opening an outwardly swinging door pivotally mounted about a vertical axis. The garage door opener includes a track, a trolley slidably mounted on the track, and at least one push bar having a first end and a second end. The push ... | 06/13/2006 |
| 7059959 | Closure for at least one opening Closure for closing one or more openings (O) of an air-conditioning system, in particular ducts or air-guiding elements that form part of an air-conditioning system. The closure (1) has a plurality of closing elements (3a to 3z) th... | 06/13/2006 |
| 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 |
| 7013605 | Door suspension apparatus A door suspension assembly includes a ferromagnetic flat plate horizontally extending from a support rail adapted to be attached to a door frame above a doorway or entrance portal. Two supporting blocks each have an opening in which a cylindrical bearing with an axi... | 03/21/2006 |
| 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 |
| 7003916 | Horizontal slider window assembly A vehicular rear window assembly for a vehicle comprises a first fixed pane, a second fixed pane, and a sliding pane, which is supported for horizontal movement between open and closed positions. The window assembly includes a support system with an upper horizontal... | 02/28/2006 |
| 6983565 | Air heated, flexible door panel A door system for a cold storage locker has increased resistance to damage by including resilient door panels that flex when hit by a forklift. A high degree of insulation is achieved by the choice and thickness of the resilient foams therein. Also, the resilient do... | 01/10/2006 |
| 6955009 | Power slider window assembly A vehicular sliding window assembly of the present invention includes first and second spaced apart fixed window panes and a polymeric member provided on perimeter portions of the fixed window panes. The polymeric member forms a gasket and includes at least one lowe... | 10/18/2005 |
| 6944990 | Window mounted automatic pet door A window mounted automatic pet door device having a pet-specific identification component whereby only authorized animals are permitted to access the pet door. The device includes an automatically operated interally sliding door to accommodate pet ingress and egress... | 09/20/2005 |
| 6943515 | Controller of automotive power door An electric drive motor drives a door to move in an open/close direction. A pulse encoder outputs a series of pulses. Each pulse has a pulse duration sized to correspond to a rotation speed of the motor. The number of the pulses corresponds to the number of revoluti... | 09/13/2005 |
| 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 |
| 6918210 | Cable driven sliding door actuator A sliding door actuator having a small electric motor and cable system is added to a standard sliding glass door for a residence. As the motor may be controlled by a remote, an individual could simply press a button to open the door. This convenience would be especi... | 07/19/2005 |
| 6918211 | Door closing device A device for urging a door into a first position includes a spring apparatus (16) including a winding drum (22) having a conical outer peripheral surface (27) and a torsional spring (24) for imparting a relatively constant urging force to... | 07/19/2005 |
| 6832449 | Door suspension system A door suspension system includes a rail support attachable to a crosspiece of a door and having a part shaped as a rigid substantially flat plate that supports a rail. A pair of brackets, each having a connector, are attached to support block having an opening in w... | 12/21/2004 |
| 6810622 | Power sliding cab window A power sliding assembly for moving a windowpane within a track within a window frame between an open position and a closed position. The power sliding assembly includes a motor fixedly secured to the window frame. The motor generates a rotational force. The power s... | 11/02/2004 |
| 6799393 | Double trolley overhead door operator A door operator having a door hanger comprising a pair of double trolley assemblies disposed for linear movement within a hanger rail, wherein each trolley assembly further comprises two rollers mounted substantially opposite one another and engaging roller cavities... | 10/05/2004 |
| 6792717 | Vehicle door operating mechanism A sliding door operating mechanism for a vehicle to provide access to the vehicle through an opening in a wall thereof, includes at least one sliding door and a reciprocating power mechanism and a transmission mechanism for transmitting movement of power to the door... | 09/21/2004 |
| 6718694 | Drive nut assembly for a door operator The present invention teaches a powered door operator for passenger transit vehicles having a drive nut assembly engaging a door hanger bracket substantially connected to a door disposed within an aperture of the vehicle structure. Such drive nut further engaging a ... | 04/13/2004 |
| 6708448 | Drive unit for doors, especially elevator doors having a non-rectilinear profile A drive unit for doors, especially doors having a non-rectilinear profile formed by wings (26, 26′, 24, 24′, 124, 126) comprises a motor (10) whose rotary shaft (20) engages with at least a bar or section (12, 14) connected to at leas... | 03/23/2004 |
| 6708449 | Two motor arrangement for a door operator A tandem of independent powered door operators for passenger transit vehicles having a central lock mechanism and enabling each of the doors to be moved with a force of less than 80 N. Such door operators can be used on vehicles where the cross-sectional area within... | 03/23/2004 |
| 6688042 | Central lock mechanism A lock mechanism enabling locking of a bi-parting set of right hand and left hand door panels respectively suspended from a right hand and left hand door operators, to be driven by the door operators for covering and uncovering an aperture disposed within... | 02/10/2004 |
| 6446389 | Tandem sliding door operator Door operator for opening, closing and locking at least one door panel on a transit vehicle. The door operator has at least one base portion for mounting on the vehicle and at least one fixed support member attached to the base portion. The door operator ... | 09/10/2002 |
| 6425820 | Mine door power drive system A mine door system including at least two doors positioned in a mine passageway in spaced relation forming an airlock. The doors include at least one leaf movable between open and closed positions to allow passage into and out of the airlock. A control sy... | 07/30/2002 |
