Electricity: circuit makers and breakers – Fluid pressure – Diaphragm
Patent
1976-08-17
1978-04-04
Tolin, Gerald P.
Electricity: circuit makers and breakers
Fluid pressure
Diaphragm
200 81R, 200 83S, 200 83C, 337117, H01C 3532
Patent
active
040829294
ABSTRACT:
The invention relates to an electric switch assembly of the type operated by a thermostatic bellows, for use on refrigerators. The operating bellows is part of a system having a liquid/vapor filling and the movement of the bellows operates a microswitch. A hinged arm which operates the microswitch is biased in a switch closing direction by the bellows and in a switch opening direction by a spring system which includes a main spring and a differential spring in series. The force displacement line of the spring system approximates the force displacement line of the bellows and has two segments with different slopes. The two segments are formed by arresting the movement of the differential spring to make it ineffective at an intermediate point in the displacement of the bellows. The first segment with a lesser slope represents the action of both springs in series while the other segment, of greater slope, represents only the main spring. Adjustments are provided for the spring system to control the temperatures at which the microswitch contacts close and open.
REFERENCES:
patent: 2480538 (1949-08-01), Barr
patent: 3256398 (1966-06-01), Snider
patent: 3319023 (1967-05-01), Lake
Danfoss A/S
Tolin Gerald P.
LandOfFree
Electric switch actuated in dependence on pressure, particularly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electric switch actuated in dependence on pressure, particularly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric switch actuated in dependence on pressure, particularly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-725095