Air driven hydraulic pump

Details Air driven hydraulic pump Air driven hydraulic pump

2007-01-30

2007-01-30

Rodriguez, William H (Department: 3746)

Pumps

Motor driven

Fluid motor

C417S385000

Reexamination Certificate

active

10781926

ABSTRACT:
An air driven hydraulic pump includes two opposed cylinders to either side of a center section. Two pneumatic pistons are slidable in the opposed cylinders and are coupled with one another by a common shaft extending through the center section. The pneumatic pistons ride in the opposed pneumatic cylinders and include hydraulic plungers extending therefrom. Cylinder heads integral with the cylinders provide hydraulic cylinders aligned with the hydraulic plungers. An air valve delivers pneumatic pressure to alternate sides of both pneumatic pistons such that the forces on the pistons are additive alternately in each direction.

REFERENCES:
patent: 3838946 (1974-10-01), Schall
patent: 4247264 (1981-01-01), Wilden
patent: 4386888 (1983-06-01), Verley
patent: 4549467 (1985-10-01), Wilden
patent: 5062770 (1991-11-01), Story et al.
patent: 5169296 (1992-12-01), Wilden
patent: 5213485 (1993-05-01), Wilden
patent: 5558506 (1996-09-01), Simmons et al.
patent: 5893707 (1999-04-01), Simmons et al.
patent: 5927954 (1999-07-01), Kennedy et al.
patent: 5957670 (1999-09-01), Duncan et al.
patent: RE38239 (2003-08-01), Duncan
patent: 6644941 (2003-11-01), Hancock et al.
patent: 6814553 (2004-11-01), Watanabe et al.
patent: 6874997 (2005-04-01), Watanabe et al.
Haskel International, Inc., Liquid Pump Catalog, LP-GL (undated).

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3787844