Winding assembly for door counterbalance system
US7686061B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2002 |
| Grant date | Mar 30, 2010 |
| Priority date | — |
| Expiry date | Sep 26, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/106
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A winding assembly used in conjunction with a door having a counterbalance system operable to offset the weight of the door, the counterbalance system including an axle rotatably supported on a pair of support brackets located at each side of the door and a counterbalance spring adapted to apply a counterbalancing force to the door. The winding assembly including a rotatable driver coupled to the counterbalance spring, the driver having a tool receiving portion, a gear wheel supported on the driver and rotatable therewith, the gear wheel defining a plurality of teeth, wherein at least one of the teeth carries a detent, whereby the detent provides a positive step to the pawl and gives an audible indication of the position of the gear wheel, and a lock assembly used in conjunction with a door system located within an opening defined by a frame, the door system including a door movable between an open position and a closed position, the door being supported on a pair of support brackets at either end of the door, a counterbalance system adapted to apply a counterbalancing force to the door, and a winding assembly adapted to adjust and maintain the counterbalancing force, the locking a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.