Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1992-10-06
1995-06-13
Hofsass, Jeffery A.
Communications: electrical
Condition responsive indicating system
Specific condition
310328, 340545, G08B 1300, H01L 4104
Patent
active
054247160
ABSTRACT:
A piezoelectric detecting system for detecting the opening of an enclosure without the need of an external battery or electrical system is disclosed. Several different piezoelectric sensor configurations to effect the detecting system are disclosed.
REFERENCES:
patent: 3441925 (1969-04-01), White
patent: 3633194 (1972-01-01), Kothe
patent: 3798619 (1974-03-01), Samofalov et al.
patent: 4074246 (1978-02-01), Conklin et al.
patent: 4089927 (1978-05-01), Taylor
patent: 4112420 (1978-09-01), Mifune et al.
patent: 4194194 (1980-03-01), Redfern
patent: 4398089 (1983-08-01), Sharpe
patent: 4424911 (1984-01-01), Resnick
patent: 4538139 (1985-08-01), Clemente
patent: 4598274 (1986-07-01), Holmes
patent: 4691195 (1987-09-01), Sigelman et al.
patent: 4706069 (1987-11-01), Tom et al.
patent: 4766420 (1988-08-01), Hastings et al.
patent: 4770527 (1988-09-01), Park
patent: 4835435 (1989-05-01), Yeung et al.
patent: 4888581 (1989-12-01), Guscott
patent: 4954811 (1990-09-01), Chatigny et al.
patent: 5060191 (1991-10-01), Nagasaki et al.
patent: 5315204 (1994-05-01), Park
Boylestad et al., "Half-wave/Full-wave Rectification", Electronic Devices and Circuit Theory, pp. 59-65, 3rd Ed., Sep. 1982.
Hofsass Jeffery A.
Mullen Jr. Thomas J.
The Whitaker Corporation
LandOfFree
Penetration detection system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Penetration detection system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Penetration detection system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1312745