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. 11, 1980
Filed:
Jan. 30, 1978
Norman Erickson, Escondido, CA (US);
Other;
Abstract
A dental appliance for evacuating debris and liquid from the mouth during dental operations having a collector member and a resilient collector membrane. The collector member has a semirigid bite block portion adapted to be gripped by the molars of the patient on one or the other side of the mouth with the bite block deforming upon the initial bite of the patient so as to form a mode thereof for secure placement within the patient's mouth and which bite block portion resists further deformation permitting the patient to exert substantial pressure on the bite block portion. The collector also has a combination tongue guard and collector membrane holder formed integrally therewith. The bottom surface of the combination tongue guard and collector membrane holder is contoured to substantially conform to the inner curvature of the patient's lower arches. The combination tongue guard and collector membrane holder also has a slot therein which forms a first and a second foot member on the opposite sides of the slot. The resilient collector membrane is frictionally held within the slot with the major portion of the membrane extending therefrom.