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. 29, 1984
Filed:
May. 14, 1982
Applicant:
Inventors:
Robert M Shaubach, Lititz, PA (US);
George Y Eastman, Lancaster, PA (US);
Vincent P Roehm, Landisville, PA (US);
Assignee:
Thermacore, Inc., Lancaster, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417 52 ; 417209 ;
Abstract
A diaphragm pump for liquids operating by heating and vaporizing a part of the pumped liquid on the motive side of the diaphragm. A center spindle upon which the diaphragm slides is shaped to permit a limited amount of liquid to leak through into the vapor side while also permitting a release of pressure at the top end of the stroke. The spindle is also shaped to permit a suitable pressure buildup during the midportion of the stroke.