US3597573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding stud and ferrule-stud assemblies
Assignee: USM Corp
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Filing: 1970-01-02
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Granted: 1971-08-03
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Expires: 1990-01-02
Abstract
Abstract An arc weldable stud is adapted to be initially inserted into predetermined gas-sealing relation within a semipermanent ferrule associated with the holding collet of a welding gun whereupon the weldable end of the stud, retractable axially in the ferrule and having a diameter permitting subsequent relative withdrawal of the gun from the welded stud, may be simultaneously applied by the gun with the ferrule to a work surface. The welding head of the stud has a belt of larger diameter than the remainder of the head but approximately equal to the clearance hole for the stem of the stud.
Inventors
- 👤 Donald H Ettinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:31
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/20; B23K9/201
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
82 words
An arc welding stud having a stem-portion of uniform diameter, and an integral, weldable coaxial head end portion shorter than the stem portion, the head end portion being characterized by including along its axial length an intermediate circumferential belt of slightly larger diameter than that of the remainder of the head portion and adapted by its radial protrusion from the remainder of said head end portion for substantial sealing cooperation with the wall of a receiving bore of a welding gun ferrule.
Claim 2
Dependent Claim
82 words
An arc welding stud having a stem-portion of uniform diameter, and an integral, weldable coaxial head end portion shorter than the stem portion, the head end portion being characterized by including along its axial length an intermediate circumferential belt of slightly larger diameter than that of the remainder of the head portion and adapted by its radial protrusion from the remainder of said head end portion for substantial sealing cooperation with the wall of a receiving bore of a welding gun ferrule.
Claim 3
Dependent Claim
40 words
A stud as set forth in claim 1 wherein the stem portion is threaded, and the belt is intermediate blank cylindrical head portions which are substantially equal in diameter to the blank diameter on which the stem thread is rolled.
Claim 4
Dependent Claim
20 words
A stud as set forth in claim 1 wherein said belt is formed with at least one axially sloping shoulder.
Claim 5
Dependent Claim
130 words
The combination with a welding gun ferrule having an interior wall providing a bore coaxial with a stud gripping collet of the gun, said collet being axially movable relative to said ferrule, of a stud having a stem to be gripped by the collet for effecting telescoping movement of the stud within said bore, said stud having a weldable head portion circumferentially formed with a radially protruding belt, said belt having a uniform axial outer dimension less than one-half that of the head portion overall and of a diameter slightly larger than that of the stem and slightly smaller than that of the bore, said belt being spaced from an extremity of the head and disposed in the bore to provide slidable, substantially closed sealing relation with said ferrule wall.
Claim 6
Dependent Claim
130 words
The combination with a welding gun ferrule having an interior wall providing a bore coaxial with a stud gripping collet of the gun, said collet being axially movable relative to said ferrule, of a stud having a stem to be gripped by the collet for effecting telescoping movement of the stud within said bore, said stud having a weldable head portion circumferentially formed with a radially protruding belt, said belt having a uniform axial outer dimension less than one-half that of the head portion overall and of a diameter slightly larger than that of the stem and slightly smaller than that of the bore, said belt being spaced from an extremity of the head and disposed in the bore to provide slidable, substantially closed sealing relation with said ferrule wall.
Claim 7
Dependent Claim
54 words
The combination ferrule and stud as set forth in claim 4 wherein said belt is disposed intermediate cylindrical blank portions of the weldable stud head, the belt being adapted, in both an initial work engaging position and a relatively retracted arc-drawing position to maintain a nearly closed gas sealing relation with said ferrule wall.
Claim 8
Dependent Claim
49 words
The combination as set forth in claim 5 wherein the diameter of the external surface of the belt provides a uniform radial gap in a range having a minimum clearance with said ferrule wall of about 0.005 inch and a maximum clearance with said wall of about 0.020 inch.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |