Door lock for handicapped persons
US5605064A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1994 |
| Grant date | Feb 25, 1997 |
| Priority date | — |
| Expiry date | Jul 8, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/93
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A door lock which does not decrease the strength of an outer end portion of the outside rotary shaft includes an inside lever handle and an outside lever handle which are attached to a lock body assembled into the door, and a retracting operation of a latch bolt of a latch arranged on latch shaft perpendicular to a handle shaft is carried out by rotation of an inside or an outside rotary shaft of the lock body. A cut portion for drive opposite to a slot of an enlarged portion is formed at an inner circumferential wall of a tubular fitting portion of the outside lever handle, and that left and right cover portions in a projection form of an outer tube of the cylinder lock are respectively fitted over the cut portion for drive and the slot through left and right cut portions of the outside rotary shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.