Pressure activated switching device - Patent Review 6329617

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Pressure activated switching device

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United States Patent

6329617

Link to this page

http://www.wikipatents.com/6329617.html

Inventor(s)

Burgess; Lester E. (Swarthmore, PA)

Abstract

A pressure activated switching device includes a first conductive layer, a second conductive layer spaced apart from the first conductive layer so as to define a planar space therebetween, and a standoff layer of electrically insulative material positioned between the first and second conductive layers. The standoff layer includes at least one opening for permitting movement therethrough of one or the other of said first and second conductive layers for the purpose of making electrical contact between them. The opening is defined by an interior edge of the standoff which laterally circumscribes an interior space, the opening including at least one linear, finger-like projection extending laterally from the interior edge into the interior space. Optionally, the switching device can include a piezoresistive material positioned between a conductive layer and the standoff. The pressure activated switching device can be used, for example, in a safety sensing edge system for a movable door.

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U.S. References

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Reference	Relevancy	Comments	Reference	Relevancy	Comments
6172315 Miller et al. Jan,2001	Your vote accepted [0 after 0 votes]		6121869 Burgess Sep,2000	Your vote accepted [0 after 0 votes]
6114645 Burgess Sep,2000	Your vote accepted [0 after 0 votes]		6072130 Burgess Jun,2000	Your vote accepted [0 after 0 votes]
5967299 de Richecour et al. Oct,1999	Your vote accepted [0 after 0 votes]		5962118 Burgess Oct,1999	Your vote accepted [0 after 0 votes]
5910355 Burgess Jun,1999	Your vote accepted [0 after 0 votes]		5855615 Burgess Mar,1999	Your vote accepted [0 after 0 votes]
5856644 Burgess Jan,1999	Your vote accepted [0 after 0 votes]		5828289 Burgess Oct,1998	Your vote accepted [0 after 0 votes]
5695859 Burgess Dec,1997	Your vote accepted [0 after 0 votes]		5623760 Newham Apr,1997	Your vote accepted [0 after 0 votes]
5510812 O Mara et al. Apr,1996	Your vote accepted [0 after 0 votes]		5477217 Bergan Dec,1995	Your vote accepted [0 after 0 votes]
5260530 Duhon et al. Nov,1993	Your vote accepted [0 after 0 votes]		5264824 Hour Nov,1993	Your vote accepted [0 after 0 votes]
5132583 Chang Jul,1992	Your vote accepted [0 after 0 votes]		5089672 Miller Feb,1992	Your vote accepted [0 after 0 votes]
5072079 Miller Dec,1991	Your vote accepted [0 after 0 votes]		5066835 Miller et al. Nov,1991	Your vote accepted [0 after 0 votes]
5060527 Burgess Oct,1991	Your vote accepted [0 after 0 votes]		5027552 Miller et al. Jul,1991	Your vote accepted [0 after 0 votes]
5023411 Miller et al. Jun,1991	Your vote accepted [0 after 0 votes]		5019950 Johnson May,1991	Your vote accepted [0 after 0 votes]
5019797 Marstiller et al. May,1991	Your vote accepted [0 after 0 votes]		5010774 Kikuo et al. Apr,1991	Your vote accepted [0 after 0 votes]
4977386 Lodini Dec,1990	Your vote accepted [0 after 0 votes]		4972054 Miller et al. Nov,1990	Your vote accepted [0 after 0 votes]
4964302 Grahn et al. Oct,1990	Your vote accepted [0 after 0 votes]		4954673 Miller Sep,1990	Your vote accepted [0 after 0 votes]
4951985 Pong et al. Aug,1990	Your vote accepted [0 after 0 votes]		4920241 Miller Apr,1990	Your vote accepted [0 after 0 votes]
4908483 Miller Mar,1990	Your vote accepted [0 after 0 votes]		4900497 Lodini Feb,1990	Your vote accepted [0 after 0 votes]
4876419 Lodini Oct,1989	Your vote accepted [0 after 0 votes]		4876420 Lodini Oct,1989	Your vote accepted [0 after 0 votes]
4845323 Beggs Jul,1989	Your vote accepted [0 after 0 votes]		4837548 Lodini Jun,1989	Your vote accepted [0 after 0 votes]
4785143 Miller Nov,1988	Your vote accepted [0 after 0 votes]		4661664 Miller Apr,1987	Your vote accepted [0 after 0 votes]
4640137 Trull et al. Feb,1987	Your vote accepted [0 after 0 votes]		4620072 Miller Oct,1986	Your vote accepted [0 after 0 votes]
4497989 Miller Feb,1985	Your vote accepted [0 after 0 votes]		4481815 Overton Nov,1984	Your vote accepted [0 after 0 votes]
4349710 Miller Sep,1982	Your vote accepted [0 after 0 votes]		4273974 Miller Jun,1981	Your vote accepted [0 after 0 votes]
4200777 Miller Apr,1980	Your vote accepted [0 after 0 votes]		4172216 O Shea Oct,1979	Your vote accepted [0 after 0 votes]
4143367 Schestag Mar,1979	Your vote accepted [0 after 0 votes]		4137116 Miller Jan,1979	Your vote accepted [0 after 0 votes]
4121488 Akiyama Oct,1978	Your vote accepted [0 after 0 votes]		4051336 Miller Sep,1977	Your vote accepted [0 after 0 votes]
4014217 Lagasse et al. Mar,1977	Your vote accepted [0 after 0 votes]		3859485 Blinkilde et al. Jan,1975	Your vote accepted [0 after 0 votes]
3693026 Miller Sep,1972	Your vote accepted [0 after 0 votes]		3668337 Sinclair Jun,1972	Your vote accepted [0 after 0 votes]
3634334 Burgess Jan,1972	Your vote accepted [0 after 0 votes]		3321592 Miller May,1967	Your vote accepted [0 after 0 votes]
3315050 Miller Apr,1967	Your vote accepted [0 after 0 votes]		2951817 Myers Sep,1960	Your vote accepted [0 after 0 votes]
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