Door latch with privacy feature
US5433497A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 12, 1993 |
| Grant date | Jul 18, 1995 |
| Priority date | — |
| Expiry date | Jan 12, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/96
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A door latch assembly including a privacy mechanism for locking and unlocking the door from the inside comprising a latch casing mounted within a bore in a door; a latch bolt retractably mounted in the casing; a handle spindle extending transversely through the housing and rotatably in said casing; a connecting mechanism engaged with the latch bolt and with the spindle whereby the latch bolt is retracted into the housing upon rotation of the spindle; an escutcheon and handle mounted on the inside of the door, one end of the spindle being non-rotatably mounted in the outside handle; and an escutcheon and handle mounted on the outside of the door, the other end of the spindle being non-rotatably mounted in the inside handle. The privacy mechanism is mounted on the inside handle and comprises a locking plate mounted on the handle interiorly of the escutcheon and rotatable with the handle. The plate has a notch therein which is adapted to be engaged by a push button type locking shaft, mounted on the inside escutcheon, to lock the plate against rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.