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:
Feb. 24, 1987
Filed:
Feb. 08, 1985
Applicant:
Inventor:
Arthur D Siegel, Cheshire, CT (US);
Assignee:
Farrel Corporation, Ansonia, CT (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D / ; B29B / ;
U.S. Cl.
CPC ...
4151995 ; 366 98 ; 366 99 ;
Abstract
Apparatus for pumping/pressurizing fluid materials such as viscous liquid polymers in which a shaft is provided with one or more blades which extend into and rotate in one or more annular channels. Inlet grooves conduct the liquid material through grooves in the shaft into the channel behind each blade. The walls of the channel apply a drag force to the material and the advancing blade pressurizes the material which is forced through axial grooves in the shaft to another pumping channel, or to an outlet. Close running fits or dynamic seals between the shaft and its bearings provide seals at opposite sides of each channel.