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:
Jan. 08, 1985
Filed:
Feb. 01, 1984
Friedrich R Stahlkopf, Buchen, DE;
Otto Tuchenhagen GmbH & Co. KG, Buchen, DE;
Abstract
A diaphragm pump especially for pumping viscous and abrasive materials including a spherical housing, the inner portion of which defines a pumping chamber together with a cylindrical hose membrane activated by a pulsating medium. One or more hose membranes surround a support pipe having a circular cross section to prevent compressive strain on the membranes during pumping by deformation of the membrane in the inward direction. In an alternative embodiment, a modulated support tube is provided to permit the diaphragm to flap into the indentations of the support tube in a manner neutral to longitudinal extension. Support rings are provided which permit symmetrical arching of the hose diaphragm during the compression stroke.