Pressure switch with laminated diaphragm

Electricity: circuit makers and breakers – Fluid pressure – Diaphragm

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

200 83J, 2003021, H01H 3534

Patent

active

049393219

ABSTRACT:
A pressure switch includes a housing, the inner space of which is divided into a pressurized fluid operating chamber and a switch mechanism chamber by a flexible diaphragm. The operating chamber communicates with a pressurized fluid inlet hole, and the mechanism chamber houses a switch mechanism. The diaphragm is hermetically fixed to the inner surface of the housing by an elastic seal member. The switch mechanism has a spring for urging the diaphragm toward the operating chamber. The switch mechanism is turned on or off as the diaphragm is transformed against the urging force of the spring by the pressure of a fluid introduced through the inlet hole into the operating chamber. The diaphragm is constructed by stacking a metal film and a flexible plastic film in layers so that the films are independent of each other. The diaphragm, whose peripheral edge is fixed to the inner surface of the inner space is so located that the metal film faces the operating chamber and the plastic film faces the mechanism chamber. The respective thicknesses of the metal film and the plastic film are so set that stress produced in the metal film when the metal film is elastically transformed by the transformation of the diaphragm is smaller than stress produced in the plastic film when the plastic film is elastically transformed by the transformation of the diaphragm.

REFERENCES:
patent: 3584164 (1971-06-01), Wagner
patent: 3585328 (1971-06-01), Fiore
patent: 3816685 (1974-06-01), Fiore
patent: 4091249 (1978-05-01), Huffman
patent: 4243858 (1981-01-01), Place
patent: 4459444 (1984-07-01), Charboneau
patent: 4591677 (1986-05-01), Hirota et al.
patent: 4593166 (1986-06-01), Hirota
patent: 4667069 (1987-05-01), Cholkeri
patent: 4820890 (1989-04-01), Tamura et al.
patent: 4827094 (1989-05-01), Tanaka et al.
patent: 4853504 (1989-08-01), Tanaka
Brochure entitled "Automobile Air-Conditioning Parts", by Fuji Koki Manufacturing Co., Ltd., 15 pages.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Pressure switch with laminated diaphragm 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 laminated diaphragm, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure switch with laminated diaphragm will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1892406

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.