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:
Nov. 25, 1986
Filed:
Sep. 24, 1985
Applicant:
Inventors:
Edward M Goldberg, Glencoe, IL (US);
Seymour Bazell, Skokie, IL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61M / ;
U.S. Cl.
CPC ...
604121 ; 604227 ; 222 47 ;
Abstract
An instrument for injecting and withdrawing fluids including an elastomeric membrane in communication with the chamber of the instrument from which fluids are injected or into which they are withdrawn, in which the membrane expands and contracts with increasing and decreasing pressure in the chamber, providing both a visual and a tactile indication of the pressure of injection or withdrawal, and a pressure relief.