Title:
AXIALLY SPLIT PIN TUMBLER TYPE LOCKUP MECHANISM
Document Type and Number:
Japanese Patent JPS55105066
Kind Code:
A
Abstract:
An axial split-pin tumbler-type lock mechanism having improved pick-resistance is provided with tumblers having substantially the same overall length, at least two of the tumblers having driver elements differing in length, and with spring means in at least two different spring rates respectively to act upon the tumblers having elements differing in length, one of the spring means which has a relatively high spring rate acting upon a tumbler having a relatively short driver element, and another of the spring means which has a relatively low spring rate acting upon a tumbler having a relatively long driver element.
Inventors:
ROBAATO RII SUTAINBATSUKU
Application Number:
JP15987179A
Publication Date:
August 12, 1980
Filing Date:
December 11, 1979
Export Citation:
Assignee:
CHICAGO LOCK CO
International Classes:
E05B27/08; F16B41/00; (IPC1-7): E05B27/08; F16B41/00