US4267426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic stud welding gun with perforated stud collet
Assignee: Newfrey LLC
•
Filing: 1979-08-28
•
Granted: 1981-05-12
•
Expires: 1999-08-28
Abstract
Abstract A stud welding gun wherein air pressure is employed to feed a stud into a collet which holds the stud against a work piece is provided with a collet held in a guide bushing and having a plurality of openings at a position wherein air used to feed the stud is forced into a space between the collet and flash shield. The air serves to clean the flash shield and the guide bushing of contaminate material.
Inventors
- 👤 Lawrence G. Mallett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:06
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/20; B23K9/206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
In combination with an automatic welding gun for end welding studs to a panel, having wall structure defining a conduit into which said studs are fed by gaseous pressure and means connecting said conduit with a source of studs and a source of gaseous pressure, a stud retaining collet comprising wall structure defining a tubular member having a large diameter portion of substantially constant cross section interconnecting with said conduit at one end thereof and into which said stud is fed by the gaseous pressure, said large diameter portion extending to a smaller diameter portion at the opposite end thereof for gripping a stud fed to the collet, and a plurality of circular openings formed in the large diameter portion of said collet wall structure and equally spaced about the circumference thereof for allowing gas flowing into said collet from said conduit to vent through said wall structure during the feed of a stud to said collet.
Claim 2
Dependent Claim
157 words
In combination with an automatic welding gun for end welding studs to a panel, having wall structure defining a conduit into which said studs are fed by gaseous pressure and means connecting said conduit with a source of studs and a source of gaseous pressure, a stud retaining collet comprising wall structure defining a tubular member having a large diameter portion of substantially constant cross section interconnecting with said conduit at one end thereof and into which said stud is fed by the gaseous pressure, said large diameter portion extending to a smaller diameter portion at the opposite end thereof for gripping a stud fed to the collet, and a plurality of circular openings formed in the large diameter portion of said collet wall structure and equally spaced about the circumference thereof for allowing gas flowing into said collet from said conduit to vent through said wall structure during the feed of a stud to said collet.
References Cited (Backward Citations)
US2475907A
Cited
US3204075A
Cited
US3774005A
Cited
US3736401A
Cited
US3909585A
Cited
EP0003702A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-11 | 1984-11-10 | 1985-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-11 | 1988-11-10 | 1989-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-11 | 1992-11-10 | 1993-05-12 | $7700.00 | Window Closed / Lapsed |