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. 23, 1991
Filed:
Jan. 24, 1990
Dieter H Kallenbach, Chartwell, ZA;
BPH Patent Holding AG, Zug, CH;
Abstract
This invention relates to a relief valve used where there is an induced flow through equipment. The relief valve controls the flow through the equipment at a uniform rate and also provides for pressure relief of the liquid used in the equipment. The valve comprising a body having a flow passage therethrough with an inlet and an outlet for connection into a pipe having induced flow therethrough. A bypass passage from the body between the inlet and the outlet and open to ambient conditions at the free end is also provided. There is a flexible resilient diaphragm in the bypass passage perforated to permit flow therethrough in one direction only and the perforation variable in size dependant on the degree of flexing of the diaphragm.