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. 17, 1998
Filed:
Feb. 07, 1997
Applicant:
Inventor:
William G Dennis, Jacksonville, FL (US);
Assignee:
Core Dynamics, Inc., Jacksonville, FL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
2511491 ; 604256 ; 604905 ;
Abstract
A double valve seal to prevent escape of liquids or gases through a cannula, the seal having a diaphragm valve with a circular aperture to seal the cannula when an instrument is inserted and a spilt conical valve to seal the cannula when no instrument is present. A pair of diametrically opposed ribs are positioned beneath the end member and are aligned with the split in the conical valve so as to abut the open end of the cannula and act as pivot points to impart compressive force against the two halves of the conical valve to improve the effectiveness of the seal.