Nut
AssigneeNifco Inc.
InventorAkira Mizusawa
Life of this patent
Estimating the term…
Abstract
A plastic nut comprises a cylindrical body incorporating in the tubular wall thereof resilient pieces provided on the inner surfaces thereof with check screw threads. When an ordinary bolt is simply pushed in the nut, the check screw threads of the nut engage themselves inseparably with the screw threads on the bolt. The union thus formed is retained strongly and lastingly. Dissolution of this union is obtained by rotating the nut around the bolt.
Claims3
A nut molded integrally of a plastic material and adapted for engagement with a bolt rod, which nut comprises a cylindrical body possessing a receiving hole for admitting the bolt rod in the axial direction and having circumferentially continuous cylindrical end portions at both ends of said body, at least one resilient tab formed in one portion of sayd cylindrical body in such a manner that said at least one resilient tab is integral on one side thereof with said cylindrical body adjacent the receiving end of said body and is flexible in the radial direction of the nut, and partial screw threads formed on the inner surfaces of said at least one resilient tab bordering on said receiving hole and adapted to be meshed with the screw threads on said bolt rod.
Dependencies are inferred from the claim text.