Pressure activated switching device

Details Pressure activated switching device Pressure activated switching device

1997-10-21

2000-06-06

Tolin, Gerald

Electricity: circuit makers and breakers

Weight

Treads

338114, 340666, 428209, H01H 314

Patent

active

060721308

ABSTRACT:
A pressure sensitive sparkless switching device includes a layer of piezoresistive cellular polymer foam, at least two conductive layers, and an insulative spacer element having at least one opening. When pressure is applied to the device the piezoresistive foam disposes itself through the opening of the spacer element and makes electrical contact between the conductive layers. The resistance of the piezoresistive foam varies with the amount of pressure applied to provide an analog as well as on-off function. The device may also provide multiple switching, and shear detection capabilities.

REFERENCES:
patent: 2951817 (1960-09-01), Myers
patent: 3315050 (1967-04-01), Miller
patent: 3321592 (1967-05-01), Miller
patent: 3634334 (1972-01-01), Burgess
patent: 3668337 (1972-06-01), Sinclair
patent: 3693026 (1972-09-01), Miller
patent: 3859485 (1975-01-01), Blinkilde et al.
patent: 4014217 (1977-03-01), Legasse et al.
patent: 4051336 (1977-09-01), Miller
patent: 4121488 (1978-10-01), Akiyama
patent: 4137116 (1979-01-01), Miller
patent: 4143367 (1979-03-01), Schestag
patent: 4172216 (1979-10-01), O'Shea
patent: 4200777 (1980-04-01), Miller
patent: 4273974 (1981-06-01), Miller
patent: 4349710 (1982-09-01), Miller
patent: 4401896 (1983-08-01), Fowler
patent: 4481815 (1984-11-01), Overton
patent: 4497989 (1985-02-01), Miller
patent: 4620072 (1986-10-01), Miller
patent: 4640137 (1987-02-01), Trull et al.
patent: 4661664 (1987-04-01), Miller
patent: 4677417 (1987-06-01), Amagishi
patent: 4785143 (1988-11-01), Miller
patent: 4837548 (1989-06-01), Lodini
patent: 4845323 (1989-07-01), Beggs
patent: 4876419 (1989-10-01), Lodini
patent: 4876420 (1989-10-01), Lodini
patent: 4900497 (1990-02-01), Lodini
patent: 4908483 (1990-03-01), Miller
patent: 4920241 (1990-04-01), Miller
patent: 4951985 (1990-08-01), Pong et al.
patent: 4954673 (1990-09-01), Miller
patent: 4964302 (1990-10-01), Grahn et al.
patent: 4972054 (1990-11-01), Miller et al.
patent: 4977386 (1990-12-01), Lodini
patent: 5010774 (1991-04-01), Kikuo et al.
patent: 5019797 (1991-05-01), Marstiller et al.
patent: 5019950 (1991-05-01), Johnson
patent: 5023411 (1991-06-01), Miller et al.
patent: 5027552 (1991-07-01), Miller et al.
patent: 5060527 (1991-10-01), Burgess
patent: 5066835 (1991-11-01), Miller et al.
patent: 5072079 (1991-12-01), Miller
patent: 5089672 (1992-02-01), Miller
patent: 5120980 (1992-06-01), Fontaine
patent: 5132583 (1992-07-01), Chang
patent: 5264824 (1993-11-01), Hour
patent: 5477217 (1995-12-01), Bergan
patent: 5510812 (1996-04-01), O'Mara
patent: 5512716 (1996-04-01), Buchien
patent: 5695859 (1997-12-01), Burgess
patent: 5828289 (1998-10-01), Burgess
patent: 5856644 (1999-01-01), Burgess
patent: 5886615 (1999-03-01), Burgess
patent: 5910355 (1999-06-01), Burgess

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