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:
Feb. 23, 1988
Filed:
Dec. 06, 1985
Applicant:
Inventor:
Thomas Skorka, Radolfzell, DE;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F / ;
U.S. Cl.
CPC ...
417489 ; 222321 ; 222383 ;
Abstract
A thrust piston pump for an active substance dispenser has two equiaxial, position-rigid, interconnected pistons running in the same direction, namely a pump piston passing in and out of an otherwise closed pump chamber and a larger presuction pistion located downstream thereof, in whose associated pressure chamber is located the pump chamber end opened by the passing out of the pump piston. This leads to a very accurate dosing of the discharged active substance quantity, accompanied by a simple construction and high operational reliability.