Abstract:
A sectional upward acting door including plural door sections interconnected by hinges and supporting guide members on opposite side edges of each section for moving the door between open and closed positions along spaced apart guide tracks. The door sections are formed from folded metal panels defining an outer wall of each section, opposed top and bottom walls which are curved to provide a pinch resistant connection between door sections and upper and lower inner walls. The upper inner wall includes a socket for receiving a hinge assembly including an elongated hinge plate which is snap fitted into assembly with plural self-lubricating polymer hinge bearing members which fit within the socket. Spaced apart end stiles and center or intermediate stiles support the panel member and transfer the weight of the door sections and other loads between sections at the hinge bearing members. The bottom and top wall profiles of adjacent sections and the hinge assembly provide a substantially pinch resistant door assembly.
Abstract:
A wheeled top guide for rolling movement of a door along an inverted U-shaped track includes a housing for mounting on the door with an upwardly extending axle and a roller thereon for rolling engagement with one side wall of the trace. A vertically oriented torsion member is seated in the housing and has a vertically extending elongated torsion rod having its lower end fixed on the housing, a horizontally extending arm having one end secured to the upper end of the torsion rod and extending away from the first shaft, and an upwardly extending axle adjacent the other end of the arm. A second roller on this axle is in rolling engagement with the other side wall of the track and is spaced from the first roller. The second roller and arm are resiliently displaceable about the longitudinal axis of the torsion rod towards the housing for insertion of the rollers into the track, and the resulting torque in the torsion rod produces a force biasing the arm and thereby the second roller to maintain the rollers in firm rolling contact with the side walls of the track.
Abstract:
A reciprocating elevator cab door is mounted on a guide track assembly which is fixed to the cab. The cab door is provided with guide rollers which travel along the upper surface of the guide track as the door opens and closes. The door is also provided with at least one upthrust roller which engages the lower surface of the guide track so as to stabilize the door against rocking motion as it moves back and forth over the guide track. The upthrust roller is preferably spring biased against the guide track. Use of the upthrust roller allows greater flexibility of door drive systems.
Abstract:
A supporting bearing (17) for linearly guided travelling units, having a housing and having a roller (20) which contains a rolling-contact bearing (26) and is seated on an eccentric bolt (28) which is mounted rotatably in the housing and can be fixed by clamping bolts (27). The housing (18a, 18b) is composed of two housing halves (18a, 18b) which are preferably of the same construction. The axial position of the roller (20) is determined by inner wall regions (46) of the housing halves (18a, 18b), which are laid or pressed against the end sides of the inner raceway (27) of the roller (20) after radial adjustment of the roller (20), by clamping the housing halves (18a, 18b) together. This results in the axial position of the roller (20) being fixed directly by way of its inner raceway (27).
Abstract:
A sliding door apparatus for a railway platform, has a plurality of sliding doors provided along an edge of a railway platform, the plurality of sliding doors being, in a closed position, arranged continuously along a line; a sliding door shifting apparatus for shifting those of the sliding doors to be opened and closed into shifted positions parallel to the closed position of the plurality of sliding doors; opening/closing apparatus for opening and closing the sliding doors disposed at the shifted positions, the opening/closing apparatus being capable of moving the sliding doors in varying directions and amounts; and a logic apparatus for analyzing information regarding the positions and widths of entrances of a railway vehicle stopped at the platform, selecting the sliding doors to be shifted, and controlling the shifting and opening/closing of the sliding doors such that the sliding doors are opened and closed in conformity with the entrances of the railway vehicle.
Abstract:
A gravity swing door hinge includes flange guards for protecting the hinge from damage and a telescopic cover assembly for protecting the cam and eliminating pinch points between cam parts and between the door and the hinge body. The hinge may be flush mounted to a door jamb while providing a broad range of pivotal movement on each side of its closed position.
Abstract:
Improved cam hardware for use with a self-positioning door. The cam is attached to the door mounting post by a threaded connection and has a lower surface which is symmetrically inclined about a high point. The lower surface is contacted by a cam follower roller which is rotatably attached to the door jamb. When the door is opened and released, the cam coacts with the cam follower roller to cause the door to return to its original position where the high point is mated with the roller.
Abstract:
A self-closing isolation door installation adapted to swing between a closed and an open position. A resilient gasket is connected about the periphery of the door to insure a tight seal. The door has a rotatable first hinge vertically mounted and adapted for mounting to the side of a door frame. A second self-closing hinge is provided including an elongated C-shaped bracket mounted into the edge of the door. The C-shaped bracket includes a vertical support strut, upper arm and lower arm. A support shaft is vertically fixed between the upper arm and the lower arm. A housing bracket is mounted to the shaft and is adapted for mounting to the side of the door frame. The housing bracket defines an inverted V-shaped cam surface. A cam follower including a radially spaced apart inner follower roller and an outer follower roller is mounted around the shaft with the outer roller adapted for vertical movement within a slot in the strut and the inner roller is engageable to follow the cam surface. A compression spring mounted around the shaft biases the follower body to bias the inner roller against the V-shaped cam surface and thereby to apply closing force to the door through the outer roller within the slot to rotate the C-shaped bracket and the door.
Abstract:
A gate for closing a passage comprising a support post and a gate hingedly mounted on the post, said gate comprising a horizontal girder supporting spaced vertically extending spikes, the means extending longitudinally through the girder, passing through all of the spikes, secured to opposite ends of the girder and subsequently tensioned thereby exerting sufficient compression in the girder to resist bending thereof and normally preventing the spikes from engaging the ground surface.
Abstract:
A sliding type door assembly for a vehicle, includes a guide rail fixed to the body of the vehicle, a door moving along the guide rail between its closed position and rear most open position, a guide follower attached to the door in such a manner that the guide follower can follow the door along the guide rail when the door moves, a brake mechanism for applying the braking power to the door by controlling the movement of the guide follower in relation to the guide rail, and a brake release means connected to the brake mechanism for releasing the brake mechanism.