Apparatus for controlling a door
US6681444B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2002 |
| Grant date | Jan 27, 2004 |
| Priority date | — |
| Expiry date | Mar 4, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05C17/006
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Door check mechanism including a rack adapted to be coupled to and extend outward from the frame, a gear adapted to be arranged on the door, the gear having teeth and being arranged in engagement with the rack and a detent mechanism arranged in engagement with the rack and the gear for enabling the door to be positioned in a plurality of fixed positions and for preventing movement of the door to a different fixed position when a force exerted upon the door is below a threshold. The detent mechanism may include a cam having a pawl in engagement with the rack and a detent and a spring for biasing the detent against the gear to press the gear against the rack. The gear is rotatable along the rack which each position in which the pawl engages one of the teeth being a possible position of the door.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.