Patent · US Expired

Lock with bolt enlargement

US4641508A · kind A · utility

0Cited by

3References

3Claims

0Family size

Assignee

Zeiss Ikon AG · DE

Inventor

Dieter Gunther · Steinheim an der Murr, DE

Key dates

Filing date	Jul 25, 1985
Grant date	Feb 10, 1987
Priority date	—
Expiry date	Jul 25, 2005

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T70/7712
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

There is disclosed herein a lock mechanism having a lengthened bolt path which is compact and exhibits an increased mechanical efficiency. The lock includes a cylinder having a rotatable lock beard and a ring surrounding said cylinder for rotation upon engagement by the lock beard. A stop on the outer circumference of the ring engages a bolt notch formed in a bolt and tumbler plate. The lock beard, the ring and the bolt and tumbler plate lie in the same plane. The radius described by rotation of the lock beard is less than the distance between the rotational axis of the lock beard and the sides of the bolt notch.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.