Non-lubricated, air-actuated, pump-operating, shuttle valve arra

Details Non-lubricated, air-actuated, pump-operating, shuttle valve arra Non-lubricated, air-actuated, pump-operating, shuttle valve arra

1995-02-14

1996-10-22

Thorpe, Timothy S.

Pumps

Condition responsive control of pump drive motor

By controlling drive motor motive fluid

417393, F04B 4900, F04B 1700

Patent

active

055671187

ABSTRACT:
A pilot spool is interposed between the compressed air supply and the diaphragm pump-operating main spool, to insure that, at any one time, only one end of the bore in which the main spool reciprocates receives the compressed air. The pilot spool has an annular recess of a length which does not bridge across passageways which admit the air to the main spool, so alternatively, each passageway opens onto an end of the main spool bore. The reciprocating pump structure, that is, the double diaphragms, shaft, and clamp plates, cause the pilot spool to shift, to communicate one of the passageways, with each shift, with the air supply and the main spool bore. No lubrication is provided or needed, and the pilot spool insures that the main spool will not stall.

REFERENCES:
patent: 3838946 (1974-10-01), Schall
patent: 4494574 (1985-01-01), Casilli
patent: 4555222 (1985-11-01), Casilli
patent: 4854832 (1989-08-01), Gardner et al.
patent: 5232352 (1993-08-01), Robinson
patent: 5277555 (1994-01-01), Robinson

Affiliated with

Also associated with

Rating

Non-lubricated, air-actuated, pump-operating, shuttle valve arra does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Non-lubricated, air-actuated, pump-operating, shuttle valve arra, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-lubricated, air-actuated, pump-operating, shuttle valve arra will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2354583