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. 10, 1998
Filed:
Mar. 18, 1996
Applicant:
Inventor:
Barry S Young, Tualatin, OR (US);
Assignee:
Dental Components, Inc., Newberg, OR (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61C / ;
U.S. Cl.
CPC ...
433 95 ; 604247 ; 604902 ;
Abstract
A coupler is adapted for inserted engagement with a dental ejector valve and serves to couple a vacuum hose to the valve. A passageway in the coupler is closed by a flexible disk which flexes open in response to a vacuum inducted ejector system flow from a source. The disk is confined in place across the passageway by a retainer which biases the disk into engagement with a valve seat surface. The flexible disk blocks any reverse flow through the coupler as when a reduced pressure occurs from interaction of the patient's mouth with a saliva ejector.