Ratchet-like assembly for winding a counterbalancing mechanism of a door, door assembly including the same and kit for assembling the ratchet-like assembly
US6907964B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 17, 2003 |
| Grant date | Jun 21, 2005 |
| Priority date | — |
| Expiry date | Jul 19, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2101
- WIPO fieldCivil engineering
- WIPO sectorOther fields
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 i…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.