Locking device
US4428211A · kind A · utility
Inventor
Key dates
| Filing date | May 12, 1981 |
| Grant date | Jan 31, 1984 |
| Priority date | — |
| Expiry date | May 12, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/8649
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A locking device of the type having a lock cylinder containing a lock plug with a threaded rod connected thereto in a manner causing rotation of the rod with rotation of the lock plug by a key operating the tumbler includes a relatively massive cylindrical lock housing having a bore extending axially therethrough, the lock cylinder being fastened against rotational and axial movements relative to the lock housing, and a relatively massive cylindrical sleeve member with a blind bore therein and a screw threaded surface arrangement in a portion of the blind bore for threadingly engaging the threaded rod. In accordance with a first embodiment, relative rotation between the lock housing and the sleeve member is prevented by a counterbore in an open end of the blind bore of the sleeve member of non-circular transverse cross section and a portion of the exterior of the lock housing of reduced circumference, non-circular transverse cross section that is at least partially receivable in the counterbore. In accordance with a second embodiment, such relative rotation between the lock housing and the sleeve member is effectuated by a pair of pivotally connected semi-annular shackle members, t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.