Door hold-open mechanism
US3969789A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 27, 1975 |
| Grant date | Jul 20, 1976 |
| Priority date | — |
| Expiry date | May 27, 1995 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/531
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A door hold-open mechanism including a door hinge member and a body bracket member pivotally interconnected by a hinge pin, a hinge sector secured to the hinge member and having at least four door stop detent slots or pockets formed therein, a directional cam pivotally mounted on the hinge pin and frictionally connected to the hinge sector and having a pair of seats and an intermediate cam slot formed thereon adjacent the detent slots, a torque-rod mounted on the bracket member, a roller mounted on an end portion of the torque-rod and urged by the torque-rod into one of the four detent slots of the hinge member when the door is stopped and urged by an edge of the intermediate cam slot onto the adjacent seat of the directional cam while the door is in motion, overriding the detent slots until the door is once again stopped.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.