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:
Jun. 09, 1992
Filed:
May. 13, 1991
G Herbert Hanson, Hamilton, Ontario, CA;
Other;
Abstract
New orthodontic traction devices that can be pre-assembled or custom assembled in the operatory using connector members consisting of cut lengths of metal spring material or wire rope material uses attachment members each of which has a recess into which the respective end of the spring or rope material is inserted. The attachment member is crimped radially inward to plastically deform the metal into the helical grooves in the connector member external surfaces and thus retain the end; alternatively the end can be secured by brazing or cementing. If spring material is used the attachment member has a central boss which protrudes into the spring. An eyelet attachment member is non-removable from an anchor hook, except by the orthodontist, by making the tongue with the eyelet hole too thick to pass through the hook mouth, while the tongue end-most border portion can pass through, so that the eyelet must be rotated to a required attitude before it can be placed on or removed from the hook. A hooked attachment member used with an enlarged-head anchor pin is non-removable by arranging that the attachment member body fouls the anchor body unless they are in required relative attitudes. Other forms of eyelet hole and hook and a ball and socket attachment system are also disclosed.