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. 09, 1986
Filed:
Dec. 02, 1985
W Richard Pamer, Parma, OH (US);
James A Zils, Parma, OH (US);
Russell, Burdsall & Ward Corporation, Brooklyn Heights, OH (US);
Abstract
An improved fastener includes a shank section which extends outwardly from a head section. The head section has a rim with an inner side surface which cooperates with an outer side surface of the shank section to form a groove. The inner side surface of the rim includes a plurality of indentations which are separated by side surfaces. The outer side surface of the shank section also includes a plurality of indentations which are separated by side surfaces. The side surfaces on the rim are disposed radially outwardly of the indentations in the shank section and cooperate with the shank section to form a plurality of constrictions. Similarly, the indentations in the rim are disposed outwardly of the side surfaces of the shank section and cooperate with the side surfaces of the shank section to form a plurality of constrictions. The constrictions apply deformation forces to material on which the fastener is mounted upon application of torque load to the fastener. The indentations in the rim and shank section of the fastener apply shear forces to the material of the member upon the application of torque loads to the fastener.