Door lock with extra release
US4861084A · kind A · utility
11Cited by
11References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1988 |
| Grant date | Aug 29, 1989 |
| Priority date | — |
| Expiry date | Mar 9, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/96
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A door having a releasable door lock is disclosed for use in e.g. a bathroom. The locking mechanism comprises a plate having a slot which in use is moved to surround the square section spindle and prevent its rotation. The plate is moved by means of a rotatable pin which includes a toothed wheel such that rotation of the wheel moves the plate and locks it in position. The door is releasable from the outside of the room in an emergency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.