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. 12, 1983
Filed:
Jan. 21, 1981
Applicant:
Inventor:
Adolf Notta, Youngstown, NY (US);
Assignee:
Wetrok Inc., Niagara Falls, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B / ; F04B / ;
U.S. Cl.
CPC ...
417269 ; 417388 ;
Abstract
A diaphragm pump having a reciprocating piston, a rotatable cam canted and engaging the piston, and a diaphragm secured to a plunger stem by a screw rotatable relative to the stem. The plunger stem extends into a bore in the piston, the piston bore and plunger stem having a matching configuration preventing rotation of the plunger stem relative to the piston when the diaphragm securing screw is loosened. The piston end engaging the cam is formed as a spherical section positioning the line of engagement with the cam closely adjacent the axial center of the piston, to reduce side thrust.