Defeater latch handle
US9080347B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 21, 2013 |
| Grant date | Jul 14, 2015 |
| Priority date | — |
| Expiry date | Nov 30, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/5765
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A defeater latch handle with a handle, a lock, and escutcheon. The handle has a through hole and a recess. The recess has a generally semi-circular ring portion and a recess notch portion that communicates with and extends out of the semi-circular ring portion. The lock is accessible through the cylinder hole. Opening the lock moves a movable blocking device to an unlocked state. The escutcheon has a bore formed therein. The bore has a notch formed therein that receives the blocking device when in its locked state. A trigger slot formed in the escutcheon receives a slidable trigger with an extension catch. In a locked state, the extension catch is in the recess notch. In an unlocked state, the extension catch moves out of the recess notch and into the semi-circular ring portion. The handle can only be turned when both the lock and the slidable trigger are unlocked.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.