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Title:
TWO STAGE DOUBLE ACTING HYDRAULIC/GAS COMPRESSOR
Document Type and Number:
WIPO Patent Application WO2004018873
Kind Code:
A3
Abstract:
A two stage gas compressor, comprising: a first compressor stage, comprising a first chamber, a first piston and a second piston, the first and second pistons being rigidly connected by a first connecting member, thereby defining a first volume opposite the first piston, a second volume opposite the second piston and a third volume between the first and second pistons; a second compressor stage, comprising a second chamber, a third piston and a fourth piston, the third and fourth pistons being rigidly connected by a second connecting member, thereby defining a fourth volume opposite the third piston, a fifth volume opposite the fourth piston and a sixth volume between the third and fourth pistons; at least one hydraulic conduit for conveying hydraulic fluid to said first and second compression stages; and at least one gas conduit for conveying said gas between said first compressor stage and said second compressor stage. Each pair of pistons is movable between two extremes under hydraulic force, whereby gas pressurized once in the first compressor stage is fed to the second stage for further compression. The compressor stages act independently on a common hydraulic supply.

Inventors:
BRIGHTWELL ALAN (GB)
Application Number:
PCT/EP2003/009348
Publication Date:
April 15, 2004
Filing Date:
August 22, 2003
Export Citation:
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Assignee:
LATTICE INTELLECTUAL PROPERTY (GB)
BRIGHTWELL ALAN (GB)
International Classes:
F04B9/109; F04B9/113; F04B9/115; F04B25/00; F04B35/02; (IPC1-7): F04B9/113
Foreign References:
US5238372A1993-08-24
GB530050A1940-12-04
GB2346938A2000-08-23
US4761118A1988-08-02
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