摘要:
The protective cover according to the present invention comprises an internal space (30) designed to take the corresponding strap (8, 9) of a guidance device (6) and at least one continuous external face (26) forming the sliding face.
摘要:
An overhead door apparatus utilizing a torsion spring counterbalancing mechanism. The counterbalancing mechanism includes a worm drive ring-shaped gear winding mechanism for setting the appropriate torque or number of winds in the spring. A counting mechanism is provided to indicate to the installer the number of winds being given to the spring. Means are also provided for accommodating spring growth and contraction during winding and unwinding using the winding mechanism and during normal raising and lowering of the door. A spring clip gear retainer is disclosed for preventing rotation or creep of the worm drive gear and spur gear during normal raising and lowering of the door. A second embodiment is disclosed allowing more universal interchangeability of components between the left and right sides of the door system, easy snap-in assembly, and including a telescoping spring cover. Each embodiment includes a spring winding counter.
摘要:
An overhead door apparatus utilizing a torsion spring counterbalancing mechanism. The counterbalancing mechanism includes a worm drive ring-shaped gear winding mechanism for setting the appropriate torque or number of winds in the spring. A counting mechanism is provided to indicate to the installer the number of winds being given to the spring. The ring-shaped gear is a spur gear which is formed integrally with the fitting or cone which attaches by way of a threaded connection with one end of the spring. Means are also provided for accommodating spring growth and contraction during winding and unwinding using the winding mechanism and during normal raising and lowering of the door. A spring clip gear retainer is disclosed for preventing rotation or creep of the worm drive gear and spur gear during normal raising and lowering of the door.
摘要:
A jamb bracket (10, 40) and track (30, 60) assembly for the support of overhead sectional doors and the like. The assembly comprises bracket means (10,40) having tab means (20,50) and track means (30,60) having tab slots (34,74). The tab means (20,40) engage the tab slots (34,74) for attachment of the bracket means (10,40) to the track means (30,60). A related jamb bracket (10,40) comprises a U-shaped main body (14,44), providing first and second perpendicularly disposed legs (16,46 and 18,48) and, tab means (30,60) offset from the main body (14,44).
摘要:
The sun shade system is for use over window panes, skylights and the like in homes, offices, greenhouses, and other applications. The system includes a plurality, preferably a pair, of parallel tracks disposable on opposite sides of a window or skylight or on window mullions, a plurality of shade carriers secured to and riding in the tracks and a flexible, foldable, resilient sun shade secured along its length to spaced ones of the carriers for movement with the carriers along the tracks. A shade mover such as a hand cord brake assembly or a motorized roller and cord assembly is also provided for urging the shade to a desired location relative to the tracks. Each track may be rectangular in cross-section, and curved or straight along its length, receives the shanks and rollers or slides of the carriers and includes an end stop. Each carrier can include a hook insertable through openings in the shade. A partition can be provided in the track to restrict oscillation of the rollers or slides and shank therein. The system is well adapted for use with a variety of straight, curved and angled windows.
摘要:
The present invention is a device which is designed to allow a door to give way when impacted by an outside force such as a forklift, reducing damage. The present invention requires less force to be activated, which allows its use on wider doors than were previously possible. The present invention is also able to reset itself, depending upon how much distance was traveled during the impact. The present invention requires less maintenance than other devices currently in use.
摘要:
A robust and simple laser guideline system provides a precisely located line image by passing a laser beam through a perpendicularly oriented transparent cylinder. The cylinder may be rotated into or out of the beam providing dual modes of line or dot image projection. A swivel mount is disclosed for use of the laser guideline system on saws or the like to demarcate the cut path.
摘要:
There is disclosed a truck assembly which is movable along a track and adapted to support a door panel, or the like, for corresponding movement. The truck assembly comprises wheel members mounted to a pair of axles. The axle are in turn supported by a carriage assembly which includes bearing arrangements for each wheel. The carriage assembly further includes holding means for maintaining the bearing assemblies in supportive position. A hanger member for the door panel is also provided, and is mounted to the carriage.