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. 27, 1996
Filed:
May. 31, 1994
James A Mawhirt, Brooklyn, NY (US);
Jack M Olich, Mahopac, NY (US);
Mark Huza, Mount Vernon, NY (US);
Diba Industries, Inc., Danbury, CT (US);
Abstract
A self-aligning connection between a rotary and reciprocating pump piston allows relative radial movement between the pump piston and the rotary cam. The self-aligning connection is formed by a pin carried by the rotary cam and is positioned in a radial recess located in the pump piston. An improved drive for the rotary cam is perfected by a cam follower pin supported from the housing by a roller bearing race which is pressed fitted within a bore formed by the pump housing. The pump piston abuts a TEFLON pad located in the pump cylinder to reduce dead space and insure that the pump produces accurate volumes. The employment of different plastic materials between the rotary cam and the pump housing provides an improved bearing surface.