Pumps – Expansible chamber type – Having pumping chamber pressure responsive distributor
Patent
1976-01-20
1977-09-20
Freeh, William L.
Pumps
Expansible chamber type
Having pumping chamber pressure responsive distributor
92 99, F01B 1900, F16J 302, F04B 4504
Patent
active
040493660
ABSTRACT:
A diaphragm pump, especially a vacuum pump for gases, includes at least one diaphragm extending transversely through the pump housing and defining therewith a pumping chamber. Drive means connected to the diaphragm moves the latter between a suction stroke at which gas is sucked into the pumping chamber through an inlet and a compression stroke in which the gas is pushed out of the pumping chambers through an outlet. The diaphragm is clamped at its outer periphery to the pump housing and at its central portion to the drive means moving the diaphragm between the suction and compression strokes. In order to avoid vibrations of the diaphragm during its operation, the space within the pump housing on the side of the diaphragm facing away from the pumping chamber is maintained at a pressure smaller than the inlet pressure of the gas during the suction stroke whereby striking of the unclamped portion of the diaphragm against the surface of the pump housing defining the pumping chamber is avoided and the useful life of the diaphragm increased.
REFERENCES:
patent: 2144662 (1939-01-01), Paasche
patent: 2185784 (1940-01-01), Corydon et al.
patent: 2221071 (1940-11-01), Barfod
patent: 2287627 (1942-06-01), Malsbary et al.
patent: 2328420 (1943-08-01), Brown et al.
patent: 2840339 (1958-06-01), Price
patent: 3027848 (1962-04-01), Merkle
patent: 3119280 (1964-01-01), Mann et al.
patent: 3250225 (1966-05-01), Taplin
patent: 3282171 (1966-11-01), Tuckmantel
patent: 3354831 (1967-11-01), Acker et al.
Freeh William L.
Striker Michael J.
LandOfFree
Diaphragm pump does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Diaphragm pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diaphragm pump will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-668672