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:
Apr. 15, 1997
Filed:
Sep. 23, 1994
Applicant:
Inventors:
Rudolf Eykmann, Wehrheim, DE;
Joachim Fritze, Friedrichsdorf, DE;
Birgit Uhrig, Neu-Anspach, DE;
Dieter Schodel, Wiesbaden, DE;
Assignee:
Heraeus Kulzer GmbH, , DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61M / ;
U.S. Cl.
CPC ...
604217 ; 604218 ; 604232 ; 604222 ;
Abstract
A syringe having a stopper configured at least partly as a membrane surface. The stopper is prestressed opposite to the direction of insertion of a rotary piston so that it assumes a stable position at rest. After displacement by the rotary piston, the membrane surface reversibly returns to this stable position after it is depressurized.