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:
Jul. 23, 1985
Filed:
Apr. 26, 1983
Bror A Andersson, S-182 46 Enebyberg, SE;
Ragnvald E Lindblom, S-740 10 Almunge, SE;
Other;
Abstract
An impression tray for dental purposes has a shovel-like blade provided on its inside with layer forming attachments for a semi-liquid or plastic impression material which is put onto the tray when it is pressed against the lower or upper jaw for taking an impression. The layer is of uniformly distributed threads with closely-lying attachment points on the inside of the tray, the threads having a stiffness such that they can penetrate into the semi-liquid or plastic impression material when the tray with the material is pressed against the respective jaw for the purpose of the layer being incorporated as effective anchoring means in the bottom layer of the impression material when the material has solidified and the tray is to be jerked loose. The threads are in the form of a non-woven fabric and are bonded to each other at their contact points.