Pump

Details Pump Pump

1984-09-17

1985-08-06

Freeh, William L.

Pumps

Expansible chamber type

92 31, 92130R, F04B 4300, F01B 3110

Patent

active

045333017

ABSTRACT:
A pump particularly adapted to produce a pressurized fluid flow has an upper drive section attached to and separated from a lower pumping section by a diaphragm. The diaphragm maintains the integrity of each section to prevent contamination of the fluid, for example. In a housing of the drive section is a rotary drive shaft having an end formed with a camming surface. The drive shaft camming surface engages a camming surface formed on an end of a reciprocating member slideably carried in the housing on a spring. A lower end of the reciprocating member extends through the diaphragm and has a piston positioned in a piston chamber of a cylinder of the pumping section. As the drive shaft rotates, the engaging camming surfaces with the spring reciprocate the reciprocating member. Fluid flow into and from the piston chamber is selectively regulated by valving devices. During operation any fluid bypassing the piston caused, for example, when pump pressure is excessive, may collect in an overflow chamber formed in the cylinder. This bypass fluid may be ejected from the pump and returned to a reservoir. A flexing of the diaphragm by the reciprocating member promotes this return.

REFERENCES:
patent: 608361 (1898-08-01), Craig
patent: 2711137 (1955-06-01), Moller
patent: 2819678 (1958-01-01), Nordell
patent: 3090313 (1963-05-01), Bodzich
patent: 3134125 (1964-05-01), Kaiser
patent: 3136255 (1964-06-01), Von Plato
patent: 3292554 (1966-12-01), Hesslor
patent: 3811798 (1974-05-01), Bickford
patent: 4105368 (1978-08-01), Waters
patent: 4231721 (1980-11-01), Hauk

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-510051