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:
Aug. 01, 1978
Filed:
Mar. 04, 1977
Applicant:
Inventor:
Edmond Chanton, Clamart, FR;
Assignee:
Societe Generale de Mecanique et de Metallurgie, Vanves, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04C / ;
U.S. Cl.
CPC ...
418 48 ;
Abstract
The invention relates to screw pump stators having a rigid tubular body lined on the inside with a resilient sleeve. The sleeve comprises a twisted liner (4) having inner bosses (5) and outer bosses (6) in the zones thereof corresponding to the highest sliding speeds of the rotor, the outside bosses projecting more than the inner bosses, and the inside surface of the rigid body (3) is hollowed out so as to sealingly receive the outer bosses of the liner.