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:
Mar. 27, 1979
Filed:
Apr. 19, 1977
Erich Broker, 4740 Oelde, DE;
Paul Hammelmann, Oelde, DE;
Other;
Abstract
A housing has an interior provided with two communicating compartments, and valve seats are located between these compartments. An inlet communicates with one and an outlet with the other of the compartments. A pressure valve is located in the other compartment and sealingly engages one of the valve seats unless the pressure in the one compartment exceeds the pressure in the other compartment. A plunger is reciprocable in the one compartment toward and away from the valve seat between a suction stroke and an expelling stroke. A suction valve member slidably engages the plunger and is guided solely by the same. The suction valve member sealingly engages the valve seats and moves out of engagement with the same to travel with the plunger during the suction stroke. An abutment limits the travel of the suction valve member during the suction stroke of the plunger.