The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 1991
Filed:
Oct. 31, 1989
Applicant:
Inventor:
Robin H Searle, Somerset, GB;
Assignee:
Normalair-Garrett (Holdings) Limited, Yeovil, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417246 ; 91180 ; 91310 ; 417347 ;
Abstract
A fluid compressor includes a plurality of compression stages each operated sequentially by drive means comprising a pneumatically operated drive piston operating in a drive cylinder. Several embodiments are described and illustrated having different forms of control means and drive and sequencing means for the drive pistons.