Electricity: circuit makers and breakers – Fluid pressure – Diaphragm
Patent
1981-02-09
1983-06-14
Tolin, G. P.
Electricity: circuit makers and breakers
Fluid pressure
Diaphragm
200 83N, 200 83S, 200153L, H01H 3532
Patent
active
043885055
ABSTRACT:
A pressure switch having a movable bellows (14) in a pressure chamber (12), a first electrical contact (16) movable with the bellows, a three-dimensional cam (18) and a second electrical contact (20) resiliently biased to follow the cam. In the preferred embodiment of the invention, the cam has a radius that linearly increases with the angular position of the cam, and is tapered toward one end for all regions about its periphery except at a point of maximum radius. Calibration at low pressure is effected by rotating the cam to its maximum-radius point, applying a standard low pressure to the chamber (12) and rotating the chamber about a threaded coupling (26) until the contacts (16) and (20) are at the point of closing. Calibration at high pressure is effected by rotating the cam to its minimum-radius point, applying a standard high pressure to the chamber, and adjusting the axial position of the cam until the contacts are at the point of closing. After such calibration, no recalibration is needed for intermediate pressure settings of the cam.
REFERENCES:
patent: 2471838 (1944-05-01), Ross
patent: 3319023 (1967-05-01), Lake
patent: 3922515 (1975-11-01), Meisenheimer, Jr.
patent: 4220836 (1980-09-01), Hersey
patent: 4272959 (1981-06-01), Yamane
Neville Dee J.
Sarian Grigor
Puritan-Bennett Corp.
Tolin G. P.
LandOfFree
Adjustable pressure-actuated switch does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adjustable pressure-actuated switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adjustable pressure-actuated switch will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-165434