US 5,819,635 AGranted

Hydraulic-pneumatic motor

OwnerRaymond J. Mooneninventor

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Abstract

A hydraulic motor has a longitudinally extended piston cylinder divided longitudinally into two separate and distinct fluid passages by a central divider. Longitudinally midway about the extended piston cylinder is attached a large center piston which provides the primary driving force for operation of the hydraulic motor. Pressurized fluid passes through one fluid passageway formed by the extended cylinder and central divider, and then through ports formed in the piston cylinder into a chamber. The pressurized fluid drives the large center piston, and therefore the piston cylinder, towards the source of fluid pressure being admitted into the piston cylinder. Pressurized fluid is thereby ported from a pressure chamber through the cylinder beyond the longitudinal midway point, and then passed through the cylinder wall to the power piston surface. In a similar manner, vacuum fluid is admitted into the remaining fluid passageway within the piston cylinder from an end opposite of the pressure fluid, and passed beyond the longitudinal midway point where it passes through the cylinder wall to the power piston on a surface opposite of the pressurized fluid. A power plant using the motor and an energy converter are also disclosed.

Claims10

Dependent claims

A hydraulic motor comprising a reciprocating cylinder for reciprocating along an axis, said reciprocating cylinder having a piston rigidly attached externally about said cylinder and located within a piston chamber, said piston having a first working surface and a second working surface, said piston dividing said piston chamber into a first main chamber and a second main chamber;

a divider within said reciprocating cylinder dividing said reciprocating cylinder into a first section and a second section and separating said first and second sections from hydraulic fluid exchange between said first and second sections within said reciprocating cylinder;
a first auxiliary chamber axially adjacent a first end of said reciprocating cylinder, said first auxiliary chamber connected to said first section of said reciprocating cylinder and separated from said second section of said reciprocating cylinder by a closure wall;
a second auxiliary chamber adjacent an end of said reciprocating cylinder opposite said first auxiliary chamber, said second auxiliary chamber connected to said second section of said reciprocating cylinder and separated from said first section of said reciprocating cylinder by a closure wall;
a first port passing through said reciprocating cylinder from said first main chamber to said first section of said reciprocating cylinder;
a second port passing through said reciprocating cylinder from said second main chamber to said second section of said reciprocating cylinder.

2 more elements

A hydraulic-pneumatic power plant comprising:

a hydraulic motor having a reciprocating cylinder for reciprocating along an axis, said reciprocating cylinder having a piston rigidly attached externally about said cylinder and located within a piston chamber, said piston having a first working surface and a second working surface, said piston dividing said piston chamber into a first main chamber and a second main chamber;
a divider within said reciprocating cylinder dividing said reciprocating cylinder into a first section and a second section and separating said first and second sections from hydraulic fluid exchange between said first and second sections within said reciprocating cylinder;
a first auxiliary chamber axially adjacent a first end of said reciprocating cylinder, said first auxiliary chamber connected to said first section of said reciprocating cylinder and separated from said second section of said reciprocating cylinder by a closure wall;
a second auxiliary chamber adjacent an end of said reciprocating cylinder opposite said first auxiliary chamber, said second auxiliary chamber connected to said second section of said reciprocating cylinder and separated from said first section of said reciprocating cylinder by a closure wall;
a first port passing through said reciprocating cylinder from said first main chamber to said first section of said reciprocating cylinder;
a second port passing through said reciprocating cylinder from said second main chamber to said second section of said reciprocating cylinder;
a source of vacuum and a source of pressure which are operatively applied to said first second and second auxiliary chambers;
and
valves for controlling the pressure state of working fluid within said first and second auxiliary chambers, which, when said valves are in a first state causes said reciprocating piston to move in a first direction along said axis, and when said valves are in a second state causes said reciprocating piston to move in a second direction opposite to said first direction along said axis.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/807,249Filed 28 Feb 1997 · continuation in part
Priority: 19 Dec 1996
Granted: 13 Oct 1998
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

F01B 7/10
Using only connecting-rods for conversion of reciprocatory into rotary motion or vice versa: having piston-rod of one piston passed through other…
F03C 1/001
Reciprocating-piston liquid engines: the movement in two directions being obtained by two or more double-acting piston liquid motors
F04B 9/1035
Having only one pumping chamber: the movement of the pump piston in the two directions being obtained by two single-acting liquid motors each…
F04B 9/115
With two mechanically connected pumping members: reciprocating movement of the pumping members being obtained by two single-acting liquid motors,…