Measuring and testing – Fluid pressure gauge – Diaphragm
Patent
1981-10-23
1984-05-01
Woodiel, Donald O.
Measuring and testing
Fluid pressure gauge
Diaphragm
73729, G01L 1302
Patent
active
044453825
ABSTRACT:
A differential pressure-responsive apparatus is disclosed which includes a primary base plate member, a cover member removably attached to the primary base plate and thereby forming a normally closed chamber, a bellows and range spring module removably attached to the primary base plate within the chamber and including a secondary base plate member, a bellows apparatus with one end thereof removably fixed to the secondary base plate and having an opposite normally closed movable end thereof movable in response to varying differential pressure thereacross, said bellows apparatus dividing the chamber into separate inner and outer chamber portions, and a first, normally closed, one-way opening valve in the normally closed movable end of the bellows apparatus, operable for interconnecting and disconnecting the inner and outer chamber portions of the apparatus with the first valve interconnecting the inner and outer chamber portions when the differential pressure therebetween exceeds a predetermined value in a first direction. A second, normally closed, one-way opening valve is located in the normally closed movable end of the bellows apparatus and is operable for interconnecting the inner and outer chamber portions when the differential pressure therebetween exceeds a predetermined value in a second direction.
REFERENCES:
patent: 2489123 (1949-11-01), Dickey
patent: 3323369 (1967-06-01), Kallenbach
patent: 3422680 (1969-01-01), Nolte
patent: 3718048 (1973-02-01), Nolte
Beall Michael D.
Reynolds Louis E.
Reynolds Equipment Company
Woodiel Donald O.
LandOfFree
Differential pressure-responsive device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Differential pressure-responsive device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential pressure-responsive device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2025829