Electricity: circuit makers and breakers – Fluid pressure – Diaphragm
Reexamination Certificate
2007-08-30
2009-10-20
Friedhofer, Michael A (Department: 2832)
Electricity: circuit makers and breakers
Fluid pressure
Diaphragm
C200S0830SA
Reexamination Certificate
active
07605336
ABSTRACT:
A pressure switch includes a piston that is movably disposed in a sensor housing. The piston moves, in response to a media pressure being applied to a surface thereof, between at least a first piston position and a second piston position. A conical disc spring supplies a non-linear spring force to the piston, and exhibits a spring force hysteresis. A switch engages the piston and is moved between first and second switch states by the piston. The switch exhibits a switch hysteresis. The spring force hysteresis and switching hysteresis are individually adjustable and together may be used to adjust the overall hysteresis of the pressure switch.
REFERENCES:
patent: 3764763 (1973-10-01), Barnes
patent: 4626636 (1986-12-01), Hickman et al.
patent: 4724289 (1988-02-01), Heissler
patent: 4827093 (1989-05-01), Strzodka
patent: 5155310 (1992-10-01), Goans
patent: 5252792 (1993-10-01), Joyce
patent: 5317954 (1994-06-01), Goans
patent: 5744771 (1998-04-01), Ellett
patent: 5990428 (1999-11-01), Hayashi et al.
patent: 6495777 (2002-12-01), Chou
patent: 6705813 (2004-03-01), Schwab
patent: 6881913 (2005-04-01), Mathewes
patent: 7038151 (2006-05-01), Amaduzzi
patent: 7157653 (2007-01-01), Cahill
patent: 7328719 (2008-02-01), Madden
patent: 7351926 (2008-04-01), Hillman
patent: 59-082935 (1984-06-01), None
patent: 06-048731 (1994-12-01), None
patent: 07-230746 (1995-08-01), None
patent: 08-273506 (1996-10-01), None
patent: 2000009571 (2000-01-01), None
Bunge Richard P.
Hickman Ron
Kosht Danial L.
Walling Joseph M.
Friedhofer Michael A
Honeywell International , Inc.
Ingrassia Fisher & Lorenz P.C.
Klaus Lisa N
LandOfFree
Pressure switch with adjustable differental setting does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pressure switch with adjustable differental setting, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure switch with adjustable differental setting will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4081329