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:
Dec. 30, 1980
Filed:
Mar. 23, 1979
Applicant:
Inventor:
Miloslav Zakora, Hillerod, DK;
Assignee:
A/S N. Foss Electric, Hillerod, DK;
Primary Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
414437 ; 222383 ; 222409 ;
Abstract
A manually operatable dosage pump comprising a cylinder, a piston movable therein between two end positions, and inlet and outlet passages communicating with the cylinder space and each containing a one-way valve or check valve. The piston is adapted to interrupt communication between said inlet and outlet passages in at least one of the end positions of the piston. Thus, a valve member mounted on the piston may cooperate with valve seats formed in a valve chamber axially aligned with the cylinder space.