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:
Dec. 07, 1982
Filed:
Jul. 09, 1981
John Jacklich, Santa Cruz, CA (US);
Other;
Abstract
A threaded device is provided which can be screwed into the tooth root of a broken tooth to aid in the attachment of a crown or similar prosthesis. The threaded device has a head which is in the shape of a spherical segment of less than a hemisphere which holds a retention ring, a shim, and in some embodiments a coping dish whereby the device of the present invention can be screwed into a threaded hole in the tooth, a dental cement applied thereto and a crown or other prosthesis applied over the head of the bolt and retention ring. In a preferred embodiment of the invention, the retention ring is in the form of a spherical segment which is complementary to the spherical segment of the head to provide a complete spherical head.