Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1996-11-25
1997-11-04
Swann, Glen
Communications: electrical
Condition responsive indicating system
Specific condition
307119, 335205, 335207, 335222, 340665, 34052531, 34082532, G08B 1306
Patent
active
056844573
ABSTRACT:
A tamper indication system for use with combination locks can indicate or signal that unauthorized manipulation of one or more of the lock components has occurred. In one mode, the tamper indication system senses unauthorized retraction of the lock bolt. Unauthorized movement of the lock cover or combination dial can also be sensed. Sensing can be achieved by generating a mechanical action responsive to the unauthorized manipulation and converting the mechanical action into an electrical signal for sensing and indicating. The mechanical action can utilize a snap action motion generation system, non-contact means such as magnets or a spring biased switch.
REFERENCES:
patent: 2842631 (1958-07-01), Martens
patent: 3353383 (1967-11-01), Fish
patent: 4129865 (1978-12-01), Randall
patent: 4262284 (1981-04-01), Stieff et al.
patent: 4331945 (1982-05-01), Cattani, II
patent: 4360803 (1982-11-01), Heiland
patent: 4503422 (1985-03-01), Hsu
patent: 4772877 (1988-09-01), Rice, Jr. et al.
patent: 4901057 (1990-02-01), Suneborn
patent: 5041814 (1991-08-01), Lin
patent: 5061923 (1991-10-01), Miller et al.
patent: 5198789 (1993-03-01), Taylor
patent: 5410301 (1995-04-01), Dawson et al.
patent: 5479151 (1995-12-01), Lavelle et al.
patent: 5493279 (1996-02-01), Dawson et al.
Harvey Michael P.
Miller J. Clayton
C&M Technology, Inc.
Swann Glen
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