Abstract: 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.

Abstract: The assembly comprises an extension spring anchored at one end to a winch mounted to the door opening frame. A double-grooved pulley is mounted on a plate secured to the free end of the spring. A fixed second double-grooved pulley is mounted to the door frame. A pair of cables are anchored at one end to the door frame and extend in parallel to pass around the two pulleys. After the second pulley, the cables separate and extend down to the bottom corners of the door, to which they are secured. Upon release of the door latch with the door down, the spring contracts and, through the first pulley, applies an equal pull to the two cables so that they move at the same rate, thereby raising the door smoothly.

Abstract: The invention relates to a design for covering and protecting an overhead door spring assembly from the coercive and deteriorating effects caused by the environment that overhead spring assembley's operate in. This includes preventing rust accumulation and deterioration of the spring assembly. The invention includes a tubular telescopic cover and bearing for a spring assembly that is water resistant and prevents rust from accumulating and dripping on vehicles below the door.

Abstract: 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.

Abstract: 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.

Abstract: A support bracket and track assembly for the support of sectional overhead doors. The assembly comprises track means (110, 112, 114) for supporting the overhead door sections and horizontal support bracket means (80) for supporting the track means (110, 112, 114). The assembly further comprises flag bracket means (140) for mounting the track means (110, 112, 114) and support bracket means (80) to a structural support, and tab means (90, 120, 130) for attaching the track means (110, 112, 114) to the support bracket means (80) and flag bracket means (140). A related fastening system for use with overhead sectional door components comprises first (80, 140) and second (112, 114) components, tab means (90) extending from the first component (80, 140) for engaging the second component (112, 114), and tab slot means (120, 130) in the second component for receiving the tab means (90) of the first component (80, 140).

Abstract: A bottom fixture for overhead garage doors which can be selectively installed on the lower portion of either the right hand or left hand side of the garage door. The bottom fixture is an L-shaped bracket having a wide flat side and a narrow flat side at right angles to one another. A first pair of parallel laterally spaced ear members and a second pair of parallel laterally spaced ear members extend perpendicular to the same surface of the wide side and each pair is spaced a predetermined distance from the top and bottom ends of the bracket and each pair of laterally spaced ears has axially aligned apertures on a horizontal axis to receive the shaft of a roller device having a roller rotatably mounted at its outer end. A first and second sheave extend perpendicular to the same surface of the narrow side on a horizontal axis and are spaced from the top and bottom ends a predetermined distance and are configured to receive a cable.

Abstract: An overhead tracked door selfsealing device suitable for easy retrofit of existing door installations which have no self sealing feature. It is comprised of a bracket and a spring driven cam system that is attached to the door track at the roller shaft points when the door is in the closed position. As a result, a lateral force imparted by the cam against the roller shaft via the pre-loaded spring forces the door against the jamb.

Abstract: A wear resistant track for the rollers of an overhead door to roll against includes a pair of uniform longitudinally extruded members such as an insert and a channel and locking means for releasably interlocking the members together whereby a planar surface of the insert is flush with portions of the channel and positioned for the rollers to bear against. In one arrangement the insert was of a polymer such as nylon and the channel was of aluminum.

Abstract: A garage door opener heater for use on garage doors to heat the drive track of the opener during cold weather to prevent binding and restricted movement of the track when the lubricates within the track solidify at cold temperatures.

Abstract: A safety device for the bottom of a vertically-closing door, such as a sectional garage door. The device comprises an elongated member installed at the bottom of the door and parallel thereto, the member having a substantially horizontal bottom surface and an upper surface which slopes downwardly and outwardly from the door. The width of the member is sufficient to bridge over the neck of a human if inadvertently trapped beneath the door when closing. The safety device may be formed as part of the bottom of a door when manufactured, or may be a later addition to an existing door.

Abstract: A torsion spring assembly for counterbalancing overhead doors which includes an elongated helical torsion spring with coils that are normally spaced apart (when the spring is untensioned), a shaft extending through the spring, and a pair of spring-mounting collars carried by the shaft and provided with slotted neck portions operatively connected to pre-formed hooks at the ends of the spring. One of the collars is fixed against both rotational and axial movement upon the shaft; the other is rotatably mounted upon the shaft; and at least one of the collars is removable from the shaft for field disassembly and reassembly of the parts. The method for constructing the assembly, either during manufacture or in the field, is also disclosed.

Abstract: 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.

Abstract: This invention relates to under carriages for supporting and displacing heavyweight sliding doors. Two spaced carriages 10 and 11 are arranged to run on a trackrail 6 which is cemented into the ground. Each of the carriages comprises two track wheels 19 and 20 situated one behind another and these track wheels each have flanges 21 at each side to enflank the head 15 of the track. The track wheels are also joined to a rigid beam which includes a spheroidal seat bearing 25 into which engages a calotte 26 having a plane upper surface which fits into a matching recess in a door frame 27 to carry the weight of the door, (FIG. 3).

Abstract: A profiled hinge joint having joint wings designed in the form of profiled frame members, one joint wing being provided with a bead member extending longitudinally with the frame member, the other joint wing having a partially open, cap-shaped flange engaging the bead member and likewise extending longitudinally with the frame member.