Hydraulic-pneumatic power transfer unit

Details Hydraulic-pneumatic power transfer unit Hydraulic-pneumatic power transfer unit

1986-12-19

1988-11-15

Smith, Leonard E.

Pumps

Successive stages

Stages driven by relatively movable motor working members

417266, 417388, F04B 118, F04B 3502

Patent

active

047845791

ABSTRACT:
Disclosed herein is a hydraulic to pneumatic power transfer unit which converts a high pressure oil flow into a flow of high pressure air by means of three stages of piston pumps and characterized by a first stage having a pair of linked pistons of substantially equal size both supplying air to a second stage piston which is directly linked to a third stage piston so that the pair of second and third stage pistons work alternately with the pair of first stage pistons and the linkage between each pair of pistons actuate spool valves which control the motion of the other pair of pistons.
A further improvement is also disclosed in which an internal oil reservoir and a swash-plate pump is added to the system so that it may be powered by a rotating shaft instead of a flow of oil. In addition, the pulses of oil produced by the swash-plate pump directly control the piston pairs without the need for spool valves.

REFERENCES:
patent: 1288966 (1918-12-01), Nielsen
patent: 2452704 (1948-11-01), Wahlmark
patent: 3249053 (1966-05-01), Govan
patent: 4443160 (1984-04-01), Bertholo
patent: 4478556 (1984-10-01), Gozzi

Affiliated with

Also associated with

Rating

Hydraulic-pneumatic power transfer unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulic-pneumatic power transfer unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic-pneumatic power transfer unit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1101195