Abstract:
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 the door opening. At least one drive motor is mounted on the front face of the elevator car and is disposed between a lower edge and an upper edge of the elevator car. The drive motor is drivingly coupled to the elevator door for moving the elevator door between the open and the closed positions.
Abstract:
A carrier slide includes a main body, a roller member, and a connecting member. The main body includes a base having a hole defined therein and a mounting member formed on the base. The mounting member includes a receiving groove defined in an underside thereof and having an opening that faces the base. The roller member includes a shaft and two wheels respectively mounted to two ends of the shaft to rotate therewith. The shaft has a diameter slightly smaller than a width of the opening of the receiving groove. The wheels rest on and are movable along a bottom of the rack. The connecting member has an upper end with a snapping fastener releasably engaged with the hole of the base and a lower end engaged with an upper end of a leaf plate of a collapsible doorplate assembly.
Abstract:
An apparatus that stabilizes vehicle sliding doors when transitioning to and from a closed position, wherein the sliding door is guided along a track by a guide wheel contacting internal surfaces of the track. The apparatus stabilizes the sliding door by limiting movement of the guide wheel in cross-car and vertical directions. The apparatus is coupled to the track and limits movement of the guide wheel by contacting a shaft of the guide wheel as well as top and bottom surfaces of the guide wheel. Shaft and bottom surface contact is provided by a plurality of parallel members extending along a first and second side of the shaft of the guide wheel. Top surface contact of the guide wheel is provided by a longitudinal member, preferably having a longitudinal cavity for energy absorption and dissipation. The plurality of parallel members further define a curved receptacle which substantially mates with the shaft of the guide wheel. Thus, when the sliding door is transitioning to and from the closed position, improved alignment as well as increased energy absorption are achieved. Furthermore, the unified structure of the lower track stabilizer improves cost effectiveness by reducing manpower and component costs.
Abstract:
A one-way self closing gate such as may be used in retail stores, airports or libraries is provided with an inclined helical ramp mechanism by which opening of the gate also causes lifting of the gate arm relative to the gate base. When released the gate will tend to close itself under the force of gravity. To augment this gravity force a spring is provided which is compressed as the arm rises relative to the base. So that the gate does not close too quickly a screw presses a nylon slug against the turning shaft of the gate. When the gate is closed a force applied to open the gate in the contrary direction to that intended is resisted by abutment of a generously welded internal stop against a generously welded internal upright. In an alternate form this resistance function in the closed position is performed by an adjacent post positioned to intercept the motion of the moving barrier. In all cases the internal mechanism of the gate is enclosed in a housing to prevent injury to children's fingers.
Abstract:
The upper portion of a panel can be slidably suspended in an elongated guide rail at the underside of an elongated support by connecting the upper portion of the panel with two spaced-apart carriers each of which is provided with an upwardly extending follower including one or more pairs of rollers extending into the interior of the rail from below. The carriers can be separably attached to and are then turnable in bearings which are recessed into the upper portion of the panel, or each carrier can be provided with an anchoring device having one or more knives which penetrate into the material of the panel when a main portion of a carrier is received in a recess of the panel and the anchoring device is thereupon turned relative to its carrier. The overhead support can be provided with clips which releasably hold the panel in either of two end positions and/or with stops which can arrest the panel in a preselected end position relative to the guide rail.
Abstract:
A wheel retainer prevents a wheel of a sliding or bypass door from jumping off of the floor track on which the wheel rolls. Portions are provided on the lower portion of the retainer for slidably engaging a downwardly facing portion of the track for inhibiting upward movement of the retainer from the track. Preferably this in the form of an L-shaped hook having a base wider than the opening of a dovetail slot in the track and a neck narrower than the opening of the slot. The retainer can then be installed only by pivoting the retainer relative to the track for inserting the hook. The retainer also has portions for engaging an upper portion of the wheel to prevent it from being lifted from the track. The preferred embodiment is a D-shape with an arcuate portion over the top of the wheel and barbs that prevent the retainer from accidentally being dislodged from the wheel.
Abstract:
A door check wherein a housing is affixed to the pivotable panel and a guide rail is affixed to the frame of a door. The housing contains a shaft which is rigidly connected with one end of an arm the other end of which is slidably guided by the rail. The shaft carries a disc cam having two asymmetric sections one of which is tracked by a spring-biased follower tending to return the panel to its closed position and the other of which is tracked by the piston of a damper which yieldably opposes the movement of the panel back to its closed position. The configuration of the two cam sections is selected with a view to allow for a reduction of the resistance which the follower offers to opening of the door shortly after the panel leaves its closed position as well as to ensure that the damper can operate independently of the follower and vice versa.
Abstract:
A horizontal sliding window construction is disclosed of the type including a fixed sash and a moving vent sash featuring a camming mechanism adapted to force the vent sash directly inward in the position which compresses a peripheral seal against the window frame facing surface to insure a weather tight closure of the window. The camming mechanism is operable in any position of the vent sash to secure the sash in a partially opened position. A closed position lock is created by operation of the mechanism moving the vent sash inward with the vent sash in the fully closed position by moving an aligned cutout on the vent sash frame into registry with a fixed locking projection on the window frame to lock the sash in the closed position.
Abstract:
Apparatus is disclosed for use with an automatic closure of the type wherein the closure member, such as a door, returns to a home position when displaced therefrom. The closure member is at least partially supported by a hanger arm secured to a cam follower that rides on a cam track. The cam track forms part of a stationary structure which provides a bearing for a rotatable post. The post may carry further support means for the closure member.
Abstract:
An air seal is provided for restraining the flow of air through a cut-out section of a door which accommodates a door closing mechanism. A pair of nested cover strips individually flexed to a U-shaped configuration is mounted astride the mechanism, the bight of the outer strip resiliently abutting a vertical surface of the cut-out section in air sealing contact. The inner strip, which has greater resistance to flexing than the outer strip, contacts the side sections of the outer strip to stiffen them against flexing as the door is swung about its support. Both strips terminate in a fringed margin to accommodate the vertical rise of the lower boundary surface of the cut-out section as the door swings away from its closed position.