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:
May. 21, 1991
Filed:
May. 08, 1989
Lowell D Hansen, Jackson, MS (US);
Vickers Incorporated, Troy, MI (US);
Abstract
A hydraulic periphery pump that includes a housing having a pump drive shaft mounted for rotation about its axis. An impeller is coupled to the drive shaft for rotation within the housing and has a disc-shaped body with axially orientated substantially flat side faces. A circumferential array of vanes are formed around the periphery of the impeller body. Backup plates in the housing have flat faces opposed to the impeller side faces. An arcuate fluid chamber surrounds the impeller periphery and has angularly spaced fluid inlet and outlet ports. Axially orientated slots or channels in the impeller side faces cooperate with fluid passages in the backup plates to centrifugally boost fluid pressure and, in effect, form a liquid-piston boost first stage for the periphery pump chamber, or to form a two-stage impeller system.