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. 29, 1980
Filed:
Jun. 29, 1978
Jan W Gerritsen, Alphen an der Rijn, NL;
Other;
Abstract
A peristaltic type pump comprising a pump housing having a circular supporting track for a pump hose and a member mounted rotatably within the pump housing. The member has at two diametrically opposite points, seen in radial direction, dimensions that are substantially equal to the internal radius of the supporting track reduced by the thickness of the pump hose in squeezed shut condition. The rotatable pumping member has a substantially elliptical shape, while the pump hose can be squeezed shut by flattened portions of the pumping member which are substantially perpendicular to the ends of the major axis of said ellipse. The lengths of said portions in tangential direction is substantially equal to the internal diameter of the pump hose, while said flattened portions are adapted for sliding movement over the pump hose when the pumping member is rotating.