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:
Sep. 12, 1989
Filed:
Aug. 25, 1987
Applicant:
Inventor:
Hans Kern, Vachendorf, DE;
Assignee:
Grunbeck Wasseraufbereitung GMBH, Hochstadt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417307 ; 417502 ;
Abstract
A metering pump comprises a pump chamber with a diaphragm for delivering a metering agent to a metering point. The pump chamber is adapted to be connected with the metering agent tank through a suction conduit comprising a suction valve. Moreover, a return conduit comprising a head valve is provided. For providing an automatic bleeding or ventilation of the metering pump and the possibility of using the pump also for metering aggressive media, the outlet of the pump chamber is adapted to be connected with the metering point through a second head valve. The outlet is connected with the return conduit and a bleed valve is provided in the return conduit.