Lock enhancing device

Details Lock enhancing device Lock enhancing device

2006-02-28

2006-02-28

Stodola, Daniel P. (Department: 3676)

Locks

Operating mechanism

Key

C070S370000, C070S37900R

Reexamination Certificate

active

07003994

ABSTRACT:
A lock enhancing device for a key comprising a lock core having a cylindrical core body with a first retaining groove formed on a rear core end and a lock sleeve having with a rear housing end comprises an axial movement stopper formed as a C-shaped ring having an inner stopper circumferential surface and outer stopper circumferential surface. The inner stopper circumferential surface and outer stopper circumferential surface is capable of being disposed in relation with the lock core and core sleeve in such a manner that the inner stopper circumferential surface engages with the first retaining groove while the outer stopper circumferential surface presses against the rear housing end of core sleeve in order to enhance structural resistance against an axial force for pulling the lock core out of the lock sleeve.

REFERENCES:
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patent: 4703638 (1987-11-01), Bergstrom
patent: 4793166 (1988-12-01), Marks
patent: 5269162 (1993-12-01), Robida et al.
patent: 5685184 (1997-11-01), Gallagher
patent: 5884512 (1999-03-01), Wayne
patent: 6644076 (2003-11-01), Huang

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