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| Number | Title | Issue Date |
| 6341809 | Liftgate counterbalance system A vehicle liftgate has a counterbalance system comprising a first link pivotally connected to the vehicle body. A second link is pivotally connected to the first link at one end and to the liftgate at the opposite end. The counterbalance system includes a... | 01/29/2002 |
| 6125768 | Door system for transit vehicle A biparting transit vehicle door system operator. The operator includes a base for attachment to the mass transit vehicle and a motive power source connected to a transmission having an output power shaft. Such operator further includes a teeter plate hav... | 10/03/2000 |
| 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 |
| 4864773 | Awning-type window lock The invention relates to a means for locking an awning/vent type window wherein pear-shaped apertures are provided on the window frame that cooperate with pin means projecting from the vent. As the vent is drawn into a closed position, the pin means enter... | 09/12/1989 |
| 4767152 | Trailer door actuating mechanism A mechanism to control opening/closing of a container door[s] is disclosed. The mechanism is generally located at one end of the container and utilizes a geometric arrangement of opposing fluid actuated cylinders, control members and pivot members to cont... | 08/30/1988 |
| 4733498 | Fast food service access window with segmented push-bar An access window for use in fast food establishments and other similar drive-thru business establishments is disclosed. The window broadly comprises an elastic operating mechanism, two planar window members and a segmented articulated push-bar operator wh... | 03/29/1988 |
| 4653227 | Door operating assembly A door operating assembly for opening and closing vehicle doors at a constant door edge force includes a frame. A teeter lever assembly is pivotally mounted on the frame and is connected to a connecting rod assembly connecting the teeter lever assembly an... | 03/31/1987 |
| 4490941 | Spindle door operator A door operator for opening and closing doors on transit vehicles and the like includes an actuator (50) secured to the transit vehicle (10). The actuator houses a worm drive and a reciprocating air cylinder (52) for imparting rectilinear motion to the wo... | 01/01/1985 |
| 4454685 | Vehicle door construction A door construction for a vehicle, in particular a railway carriage, comprising a one-leaved or two-leaved door which through the intermediary of one or more brackets, secured to a rotatable, vertical shaft, can be opened or closed by rotating said shaft,... | 06/19/1984 |
| 4433505 | Swinging plug door A plug door for a vehicle, such as a railway carriage, is carried and driven by a swinging lever which has a sliding fulcrum mechanism the effect of which is to flatten the arc through which the door is carried. The edge of the door which trails in an ope... | 02/28/1984 |
| 4421342 | Rotary actuation device An emergency release and rotary actuator including a cylinder containing compressed gas or ignitable chemical material, a pressure tube and electrically fired detonation means for releasing the gas into such pressure tube or igniting the chemical material... | 12/20/1983 |
| 4411102 | Door control A Door Control designed especially for a service passage in a quick food establishment or the like, i.e., for serving customers on one side of a passage, say, in a cubicle, by an employee on the other side thereof. Essentially, such control mechanism comp... | 10/25/1983 |
| 4375140 | Door opener for bus and the like What is disclosed is a door opener for a bus and the like having a pair of doors pivotally mounted on each side of a door opening on respective door shafts characterized by respective door bell cranks connected with the door shaft so as to effect desired ... | 03/01/1983 |
| 4346533 | Drive for a vehicle door Obstacle sensing apparatus for a pivotal door has a drive for operating the door between open and closed positions. Linkage is provided between the pivotal column which supports the door for swinging movement and a platform pivotally mounted on a fixed ad... | 08/31/1982 |
| 4257199 | Stadium cover A stadium cover includes a pair of complemental compartmented canopies which are filled with a gas such as helium and which are moored or anchored by two or more winches to enable selective manipulation of their position. The winches act through cable set... | 03/24/1981 |
