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:
Jul. 07, 1987
Filed:
Dec. 08, 1986
Applicant:
Inventor:
Charles Raymond, Jr, Petaluma, CA (US);
Assignee:
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01C / ;
U.S. Cl.
CPC ...
418 45 ; 418153 ;
Abstract
A peristaltic diaphragm pump comprises a drive shaft, two nutating members having inner surfaces and a flexible tubular member wound at least 360.degree. around the axis of rotation defined by the drive shaft such that the nutating members nutate to peristaltically compress the tubular member between the inner surfaces and to provide a continuous linear sealing as the drive shaft is rotated. Each of the inner surfaces is shaped like a truncated cone with the slope in the radial direction linearly changing around its axis and a shaft therethrough is affixed obliquely so as to wobble with respect to the drive shaft.