US 3,943,587 AGranted

Method of manufacturing threaded nuts and threaded nut articles produced by such method

OwnerSegismundo Nates Laskyinventor

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Abstract

A method of manufacturing threaded nuts comprises providing a hollow nut casing having the desired geometrical nut profile and having at least one radial slit extending the length of the nut casing so as to render the nut casing inwardly contractible. A coil spring insert is formed with the inner edges of the coils defining a screw thread and the coil spring insert is inserted into the hollow opening in the nut casing. Then radial pressure is applied to the hollow nut casing so as to deform and inwardly contract the nut casing so that it is compressed about the coil spring insert and while in this state, the coil spring insert is welded to the nut casing to form a unitary threaded nut. The welding can be carried out by spot welding, friction welding, electronic welding or other available welding techniques so as to integrate the coil spring insert and nut casing into a one-piece threaded nut article.

Claims5

Dependent claims

A method of manufacturing a threaded nut article comprising the steps of:

providing a coil spring insert having a plurality of connected together coils the inner edges of which defines a screw thread;
providing a hollow nut casing having an outer profile in the shape of a nut, an inner opening extending through said nut casing and dimensioned to receive therein said coil spring insert, and at least one radial slit extending the length of said nut casing effective to render said nut casing slightly deformable and inwardly contractible when radial inward pressure is applied thereto;
positioning said coil spring insert into the nut casing inner opening;
applying sufficient radial inward pressure to said nut casing to slightly deform and inwardly contract the same so as to compress it about said coil spring insert;
and
connecting said nut casing and coil spring insert together during the application of said radial inward pressure to form a unitary threaded nut article.

3 more elements

Dependencies are inferred from the claim text.