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US 9,803,678 B2Granted
Arc weld stud having a forming thread
AssigneeAkko Fastener Inc.
InventorNestor Fernandez
Life of this patent
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Abstract
An arc weld stud for fastening a member to a structure with an unthreaded nut includes a weld end having an ignition tip, and a threaded portion defined by a thread configured to form a corresponding counter-thread into a smooth bore of the unthreaded nut, wherein the arc weld stud comprises a material that is harder than the material of the unthreaded nut.
Claims2
A fastener assembly for fastening a member to a structure with an unthreaded nut, the fastener assembly comprising:
- an arc weld stud comprising a weld end having an ignition tip configured to be joined to a substrate by arc welding, and a threaded portion defined by a thread configured to form a corresponding counter-thread into a smooth bore of the unthreaded nut;
- wherein said arc weld stud comprises a material that is harder than the material of the unthreaded nut;
- and
- an unthreaded nut having a smooth bore, wherein said unthreaded nut comprises a plastic material and said thread of said arc weld stud forms a corresponding counter-thread into said smooth bore of said unthreaded nut,
- wherein said threaded portion is defined by a double-start thread.
2 more elements
A method of forming a threading fastener, comprising:
- forming a stud having a first end, a second end, and a shank;
- forming a thread on the shank;
- and
- joining an unthreaded nut to the shank by turning the unthreaded nut on the shank such that the thread forms a corresponding counter-thread into a bore of the unthreaded nut;
- wherein the first end of the stud defines an ignition tip configured to be joined to a substrate by arc welding, and the nut comprises plastic material, and wherein forming a thread on the shank includes forming a double-start thread on the shank.
2 more elements
Dependencies are inferred from the claim text.