Abstract:
A ratchet-like system for winding a rolling door assembly. The ratchet-like system includes a support bracket, a cam, and a biasing device. The support bracket is preferably mounted onto a fixed structure of the rolling door assembly. The cam is pivotally mounted about the support bracket and positioned adjacent to a portion of an overhead shaft of the assembly. The cam is shaped and sized to cooperate with this portion of the overhead shaft between a first position, where the cam allows rotation of the overhead shaft along a first direction, and a second position, where the cam has a surface engaged with the overhead shaft and where further rotation of the overhead shaft along a second direction, opposite to the first direction, is blocked by the cam. The biasing device is used for urging the surface of the cam onto the overhead shaft. The ratchet-like system is particularly useful for adjustably controlling the rotation of the overhead shaft of the rolling door assembly during the winding thereof.
Abstract:
A winding system for winding a rolling door assembly. The winding system includes a support bracket, first and second gears. The support bracket is preferably rigidly connectable to a fixed structure of the rolling door assembly, and has a receiving device and a supporting device. The first gear is pivotally mounted about the receiving device of the support bracket and rotatable thereabout along opposite first and second directions of rotation. The second gear is pivotally mounted about the supporting device of the support bracket and rotatable thereabout along opposite first and second directions of rotation. The second gear is operatively connected to a corresponding end of the counterbalancing spring of the rolling door assembly and is also threadedly engaged with the first gear such that, a rotation of the first gear along one of its first and second directions of rotation causes the second gear to rotate along a corresponding one of its first and second directions of rotation, thereby resulting in a corresponding winding of the counterbalancing spring of the rolling door assembly.
Abstract:
A leaf bumper assembly for stopping displacement of a garage door guided along a side rail track. The leaf bumper assembly includes a bracket and a strap. The bracket has a first portion rigidly connected to a fixed structure and a second portion positioned to abut with an edge of the garage door for stopping displacement thereof. The strap has a first end affixed to the first portion of the bracket and a second end affixed to the second portion of the bracket. By virtue of its design, the leaf bumper assembly prevents broken pieces from falling to the ground when the bracket of the assembly is broken.
Abstract:
FIG. 1 is a top perspective view of the shaft clamp; FIG. 2 is a front view thereof; FIG. 3 is a rear view thereof; FIG. 4 is a left-side elevational elevation view thereof; FIG. 5 is a right-side elevational view thereof; FIG. 6 is a top view thereof; FIG. 7 is a bottom view thereof; and, FIG. 8 is an alternate top perspective view thereof, the shaft clamp being shown in relation to an exploded view of a chain hoist of a counterbalancing system. The portions shown in broken lines form no part of the claimed design.
Abstract:
A tensioning assembly for winding a winding system includes a support bracket connectable to a fixed frame, a collar portion removably mountable onto a shaft of the winding system proximate to the support bracket, a ratchet wheel, and a pawl component. The collar portion is removably secured onto the shaft. The ratchet wheel is securely mounted onto the collar portion and is rotatable therewith. The ratchet wheel has a plurality of teeth and a plurality of corresponding recesses. The pawl component is operatively mountable on the support bracket and is moveable with respect to said support bracket, the pawl component having an extremity being positioned, shaped and sized with respect to at least one recess of the ratchet wheel for allowing rotation of the shaft along a winding direction, and for blocking rotation of the shaft along an unwinding direction.
Abstract:
A cable failure device for a cable-operated door operated by a tensioned cable, the cable-operated door having a movement guided along a fixed structure, such as a guide rail. The cable failure device is configured for cooperating with the tensioned cable so as to immobilize the cable-operated door with respect to the fixed structure in the event of a loss of tension in the cable. The cable failure device included a support bracket for mounting the cable failure device onto the door, a guiding assembly operatively mounted for guiding the movement of the door along the fixed structure, and a braking assembly operatively mounted onto the support bracket, and operable between a rest position where the guiding assembly is allowed to guide the door along the fixed structure, and an operable position triggered by a given loss of tension detected in the tension cable where the braking assembly engages a portion of the fixed structure for braking movement of the cable-operated door with respect to the fixed structure. The cable failure device also includes a safety arm operatively connected to the braking assembly and cooperating with the tensioned cable so as to detect the given loss of tension. The safety arm is operable between a safety configuration where it is positioned over at least one fastener of a corresponding hole of the support bracket when there is still a given tension in the tensioned cable, for preventing a user from removing the support bracket from the door, and a retracted configuration where the safety arm is positioned away from the fastener when the given tension is no longer present in the cable, thereby enabling the user access to the fastener. Thus, the cable failure device is configured for immobilizing the door in the event of a loss of tension and for preventing a user from removing the device from the door when there is still tension in the cable.
Abstract:
A ratchet-like assembly for winding a counterbalancing mechanism of a door. The ratchet-like assembly includes at least one plate, at least one ridge, an actuator, and at least one pawling element. Each plate is operatively mounted onto a fixed structure and includes an orifice through which extends a shaft of the counterbalancing mechanism and about which the shaft is rotatable along opposite first and second directions of rotation. Each ridge is provided about an outer edge of the corresponding orifice. The actuator is operatively connected to each plate and is operable between a locked configuration and an unlocked configuration. Each pawling element is mounted onto the actuator and is positioned within a corresponding ridge, adjacent to the shaft. Each ridge and each corresponding pawling element are shaped and sized so that when the actuator is operated in the locked configuration, each pawling element is operatively pressed against the shaft and its corresponding ridge for preventing the shaft from rotating along the first direction of rotation, and when the actuator is operated in the unlocked configuration, each pawling element is operatively urged away from the shaft and its corresponding ridge for allowing the shaft to rotate along both the first and second directions of rotation. The present ratchet-like assembly enables to easily install and calibrate counterbalancing mechanisms of various types of door assemblies where a torque must be applied and maintained onto a given shaft of the door assembly.
Abstract:
A drive mechanism for use with an overhead shaft of a sectional door for raising and lowering the door via a rotation of the overhead shaft. The drive mechanism has a support structure, a first gear, a drive shaft, a second gear, a pocket wheel and an actuator. The second gear is interconnected to the first gear so that a rotation of the second gear is transmitted to the first gear and vice versa. The pocket wheel is operable between first and second positions. The second gear is rotatable along a first direction corresponding to a raising of the sectional door and along an opposite second direction corresponding to a lowering of the sectional door. The actuator is used for rotating the pocket wheel about the drive shaft, operating the pocket wheel between the first and second positions, and driving the second gear along the first and second directions when the pocket wheel is in the second and first positions respectively. The drive mechanism includes a first ratchet assembly for blocking rotation of the second gear along the second direction when the pocket wheel is in the second position. The drive mechanism may also include a second ratchet assembly for blocking rotation of the second gear along the first direction when the pocket wheel is in the first position.
Abstract:
A kit (1) for assembling a variety of different door configurations adapted to be installed within a predetermined range of dimensions, onto a specific door opening (7) defined within a fixed structure (9) and contained within said predetermined range of dimensions. The kit (1) includes first components (11) for assembling a specific door leaf (13) shaped and sized for substantially covering the specific door opening (7). The kit (1) also includes second components (15) for mounting onto the fixed structure (9) of the specific door opening (7), the second components (15) including components (15) for assembling a track system (17) along which the specific door leaf (13) is configured to travel. The kit (1) also includes third components (19) for assembling a counterbalancing system (21) operatively connectable between the specific door leaf (13) and the fixed structure (9) for counterbalancing the specific door leaf (13) with respect to said fixed structure (9). The components (11 ,15,19) of the kit (1) are configured to be selectively adjustable along given increments for assembling a specific door assembly (23) representative of dimensions (25,27) of the specific door opening (7), and the components (11 , 15,19) of the kit (1 ) are further configured to be provided with adjustment means (29), and corresponding marking systems (31) representative of given increments, for selectively adjusting parameters of the components (11 ,15,19) of the kit (1) in response to the specific door leaf (13) being used for assembling the specific door assembly (23).
Abstract:
A drive mechanism for use with an overhead shaft of a sectional door for raising and lowering the door via a rotation of the overhead shaft. The drive mechanism has a support structure, a first gear, a drive shaft, a second gear, a pocket wheel and an actuator. The second gear is interconnected to the first gear so that a rotation of the second gear is transmitted to the first gear and vice versa. The pocket wheel is operable between first and second positions. The second gear is rotatable along a first direction corresponding to a raising of the sectional door and along an opposite second direction corresponding to a lowering of the sectional door. The actuator is used for rotating the pocket wheel about the drive shaft, operating the pocket wheel between the first and second positions, and driving the second gear along the first and second directions when the pocket wheel is in the second and first positions respectively. The drive mechanism includes a first ratched assembly for blocking rotation of the second gear along the second direction when the pocket wheel is in the second position. The drive mechanism may also include a second ratchet assembly for blocking rotation of the second gear along the first direction when the pocket wheel is in the first position.