Abstract: 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. For this purpose, associated with each of the top and bottom locking elements is an actuator element whereby the actuator elements are fastened to a single slide which is held on a beam so that it can move perpendicular to the sliding direction of the leaf and which can be moved indirectly by the drive unit.

Abstract: 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 hanger unit for motion along the base and hanger unit. The hanger portion includes a longitudinal cavity and a slot communicating with the cavity. The drive member is disposed within the cavity and a drive member connector passes through the slot to connect the drive member to the door support.

Abstract: 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 flocked drive cable provides a helical surface. Specific coupling members are adapted to engage the helical surface and operably couple the drive cable with the slidable component. For example, in one preferred embodiment a coupling bracket operably couples the flocked drive cable to a slidable window assembly of the type used in the rear opening of a pick-up cab for opening and closing the window. In a second preferred embodiment, the coupling member operably couples the drive cable to a curtain assembly located within the interior of an over-the-road truck cab for opening and closing the curtain.

Abstract: 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 cams (1, 2) connected to first and second levers (3.1, 3.2) forming a parallelogram. A stationary guide rail (4.1) on the car has an entry cam (4) which receives a roller (5) on the entraining cam (1) to spread the parallelogram against a tension spring (6) and into engagement with first and second shaft lock rollers (7a, 7b) on the floor door to couple the doors together. The locking mechanism (L) has a transmission lever (8) attached to one entraining cam (2) and pivotally connected to a locking rocker (9) carrying a support roller (10). The locking rocker (9) also is pivotally connected with a catch (11) having a lug (11.2) that detents with a stationary lock plate (13) on the car to prevent opening of the car door.

Abstract: 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 a respective motor operated by the control mechanism. Each panel is secured to at least two runner members that are each operated by a roller secured to a link arm. The link arms are rotationally interconnected and rotated by the respective motor. Simultaneous rotation of the arms in opposite directions moves the two panels together (or apart) and thus closes (or opens) the entry device by moving each panel into a position in which it is locked by the respective arm in the horizontal position.

Abstract: 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 mounted on the elevator car door. The door lock also includes a controller that integrates the door lock into the elevator system and provides failure management for the door lock. The door lock of the present invention does not require power during either the locked or unlocked state.

Abstract: 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 drive pulley provides a drive force to a linear transmission element. Another feature of the door operator is a modular mounting plate, wherein the door operator is mounted to the mounting plate, and in turn, the mounting plate is mounted in the space between the cab fascia and the sill edge plane.

Abstract: 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 to move one gate upward, while moving the other gate downward, each gate remains substantially parallel to one another. The safety gate also includes a latch mechanism for locking the either of the front and rear gates into a particular position.

Abstract: 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, when at a landing, presses against the guide surface (9) via a roller. The lever is pivotally attached to the linkage (6) by a movable pivot (20). When the door is reaching the closed position, a coupling element (2) transmits motion of the door to the linkage (6) to operate the lock (12) using the driving power of the door actuating mechanism.

Abstract: 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 doors and secure locking windows. A building construction comprising: (a) a foundation; (b) a roof; and (c) a wall extending from the foundation to the roof, wall being constructed of an interior corrugated metal sheet, insulation covering both sides of the metal sheet, a wall covering on an interior surface of the insulation and a wall covering on the exterior surface of the insulation.

Abstract: 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 are fastened to the drive shaft, thereby providing a drive force to linear transmission elements disposed about each of the drive pulleys. Another feature of the door operator is a modular mounting plate, wherein the door operator is mounted to the mounting plate, and in turn, the mounting plate is mounted in the space between the cab fascia and the sill edge plane.

Abstract: 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 closed position effects the movement of the remaining cover in an opposite direction. In a preferred embodiment of the invention, the inwardly facing ends include external illumination sources which abut one another when the covers are closed to provide a point light source for the interior illumination of the vehicle when the visor is in a lowered use position and which is directable by movement of the visor for providing illumination for the vehicle occupants. When the covers are moved to an open position, the illumination sources are spaced-apart on opposite edges of the mirror and provide illumination for the face of the user of the illuminated vanity mirror facilitating use under low, ambient light conditions.

Abstract: 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 opening of the elevator door from the inside of the car when the car is between two floors, i.e., outside the door opening zone of a floor, wherein a rocker mechanism is affixed to a fixed or movable cam of the clutch and coupling mechanism of the door, the rocker mechanism being tilted by coupler brackets of the hoistway door during normal operation of the door within the door opening zone and, via a transfer means, removes a locking pawl from a hook retainer and thus mechanically frees the door for opening, with the rocker mechanism not being actuatable outside of the door opening zone and blocking the car door via the locking pawl that is kept in a mechanically interlocked position via a compression spring.

Abstract: 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 preceding set, which can be a single slidable door, to form an airlock. Ventilation means in the containment provide an inward air flow through the opening into the containment.

Abstract: 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 which covers the mirror in the retracted position and which uncovers the mirror. Interconnecting levers are provided for interconnecting the plurality of doors provided for simultaneous movement thereof between the extended position and the retracted position when one of the plurality of doors is moved.

Abstract: 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 confining the roller as the operating arm is moved between its extended and retracted positions to move one between open and closed positions, respectively. A bracket is on the inner side of the other sash adjacent its outer vertical side, and a drag link is pivotally connected on one end to the bracket and on the other end to the operating arm to move the other sash between open and closed positions synchronously with the first sash when the operating arm is moved between its extended and retracted positions, respectively.

Abstract: 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 beyond the swing motion required to actuate a hoistway door lock. If the cam operates within the normal swing motion, it is in contact with a hoistway door lock. If the retiring cam is not in contact with the hoistway door lock, the car must not be a safe exiting zone and the car door is locked by the mechanism.

Abstract: 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 same speed so that there is no mismatched motion between the doors.

Abstract: 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 unlatched position, in which the doors are released. The pivot arm is rotated from the latched to the unlatched position when it contacts any one of a plurality of cams which are installed on the wall of the elevator shaft in which the elevator car is housed. The cams are located such that when the pivot arm contacts a cam, the elevator car is in a position where it is safe to open the doors of the elevator car. The door lock may be further equipped with an electrically-controlled actuator which rotates the latch and the pivot arm to a second latched position in which the doors are locked by the latch and the pivot arm will not contact the cams.

Abstract: 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 positioning. A pair of handrail gates are pivotally mounted on the ramp frame at opposed lateral sides thereof, and engage guide channels in the ramp side edges for automatically opening and closing the handrail gates as the ramp is extended from and retracted into the frame. The guide channels are so constructed that the handrail gates open and close from overlapping positions without interference. The entire extension is provided as a modular assembly which may be readily incorporated into existing or new walkway constructions.

Abstract: 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 reliable movement than the prior art means for opening such tunnels.

Abstract: A gate assembly for a milking parlor including a pivotal barrier mounted on a horizontal axis allowing the barrier to swing between opened and closed positions. An additional barrier is coupled to the barrier to move in synchronism therewith in an opposite direction.

Abstract: An opening cover of fiberglass is provided for hopper railroad cars, whereby the car may be loaded from above by causing the halves of the cover to move outward through a cable drive system. The covers are of an aero-dynamic shape which provides for negative lift and drag. By employing light-weight materials and an aero-dynamic shape, substantial advantages in fuel cost and consumption can be achieved, while providing for easy loading and protection of cargo through the translational movement of the cover halves.

Abstract: An apparatus for preventing the car door section of an elevator car from being opened when the elevator car is not located at an authorized landing zone in the elevator shaft. A car door locking device includes a locking mechanism connected to and movable with the car door section. The locking mechanism has a first member, a second member, and apparatus for connecting the second member for limited guided movement with respect to the first member between a locked position and an unlocked position. A spring is provided for normally urging the second member toward the locked position with respect to the first member. A first stop is attached to and movable with the second member. A second stop, fixed in position with respect to the car door section, is provided for selectively engaging the movable stop.

Abstract: A vertically slidable window comprises two upper and lower sashes to open and close the window opening. The vertical side members of the upper sash and the vertical side members of the lower sash are provided with toothed rack members opposed to each other and pinions are installed between each pair of rack members to mesh with the latter, so that the upper and lower sashes can be raised and lowered in interlocked relation.

Abstract: An apparatus is provided which couples a car door and a hall door in an elevator system. The apparatus includes a roller which is spring loaded into a first position for engaging a vane on the car door and which is movable from that first position for disengaging the vane if the vane is on the wrong side of the roller. The apparatus allows the car door to open and close the hall door by engaging this roller and, if the vane is on the wrong side of the roller, nevertheless, allows the car door to close.

Abstract: A locking mechanism for the doors of an elevator car which is disabled when the car is within a short distance from a landing but which otherwise permits the doors to be opened by an amount insufficient for a passenger to exit from the car and then locks the doors with respect to further opening movement. In the preferred form, a door carries a notched plate, and a latch bolt on a part of the car which is stationary relative to the door is controlled by an arm engageable with spaced cams in the hoistway so that the bolt will enter the notch of the plate when the car is away from a landing and the doors are partially opened.

Abstract: A locking mechanism, for the doors of an elevator car, which is disabled when the car is within a short distance from a landing but which otherwise permits the doors to be opened by an amount insufficient for a passenger to exit from the car and then locks the doors with respect to further opening movement. In the preferred form, a door carries a notched plate, and a latch bolt on a part of the car which is stationary relative to the door is controlled by an arm engageable with spaced cams in the hoistway so that the bolt will enter the notch of the plate when the car is away from a landing and the doors are partially opened.

Abstract: 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 which covers the mirror in the retracted position and which uncovers the mirror. Interconnecting levers are provided for interconnecting the plurality of doors provided for simultaneous movement thereof between the extended position and the retracted position when one of the plurality of doors is moved.