Movable barrier with two part guide follower
US5271448A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 27, 1992 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | Jul 27, 2012 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/585
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An overhead roll door includes a breakaway guide follower having a first part attached to a raising and lowering mechanism and a second part attached to the door. The first part defines a pivotable latch plate having a slot therein, and the second part of the guide follower defines a pin received in the slot. A detent mechanism resists rotation of the latch plate out of a retaining position, in which the first and second retaining elements are held together, to a release position, in which the second retaining element is allowed to move transversely with respect to the first retaining element to allow the door to breakaway in response to an impact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.