US3634643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-shielded water-cooled electric welding torch
Assignee: HIMMELMANN LOUIS F
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Filing: 1970-12-09
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Granted: 1972-01-11
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Expires: 1990-12-09
Abstract
Abstract A gas-shielded water-cooled electric welding torch having a rotary gas control and shut-off valve is described. The rotary mechanism of the valve is received in a transverse cylindrical bore formed in the torch body portion, an extension of which serves as a handle when the torch is manually operated. Construction is such that the rotary control handle of the valve may be placed at either side of the torch, depending upon in which direction it is inserted in the cylindrical opening. The body portion of the torch is also provided with longitudinal bores serving as conduit means for circulating coolant water through the torch head.
Inventors
- 👤 Louis F Himmelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:36
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/24; B23K9/28; B23K9/29; B23K9/291; B23K9/285
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
207 words
A gas-shielded water-cooled electric welding torch comprising a torch head, an elongated torch body member extending outwardly of said torch head to one side thereof, said body member having longitudinally extending water inlet and water outlet and gas inlet passageways, a cylindrical bore extending transversely through said body member and communicating at opposite interior sides thereof with said gas inlet and gas outlet passageways, a frustoconical valve recess formed at the communicating juncture between said gas inlet passageway and said laterally transverse bore, and a ball check within said valve recess, a valve stem member rotatably received within said transverse bore, said valve stem member having cam means in register with said ball check operative, upon rotation of said valve stem member to move said ball check between unseated and seated positions with respect to sAid valve seat recess, said cam means comprising a cylindrical cam portion eccentric with respect to said transverse bore and defining a cam groove within which said ball check is partially received, said valve stem member comprising a pair of transversely divided first and second valve stem sections, said first section comprising said cylindrical cam portion, and means for bolting said first and second valve stem sections together within said transverse bore.
Claim 2
Dependent Claim
207 words
A gas-shielded water-cooled electric welding torch comprising a torch head, an elongated torch body member extending outwardly of said torch head to one side thereof, said body member having longitudinally extending water inlet and water outlet and gas inlet passageways, a cylindrical bore extending transversely through said body member and communicating at opposite interior sides thereof with said gas inlet and gas outlet passageways, a frustoconical valve recess formed at the communicating juncture between said gas inlet passageway and said laterally transverse bore, and a ball check within said valve recess, a valve stem member rotatably received within said transverse bore, said valve stem member having cam means in register with said ball check operative, upon rotation of said valve stem member to move said ball check between unseated and seated positions with respect to sAid valve seat recess, said cam means comprising a cylindrical cam portion eccentric with respect to said transverse bore and defining a cam groove within which said ball check is partially received, said valve stem member comprising a pair of transversely divided first and second valve stem sections, said first section comprising said cylindrical cam portion, and means for bolting said first and second valve stem sections together within said transverse bore.
Claim 3
Dependent Claim
33 words
A gas-shielded water-cooled electric welding torch as defined in claim 1, wherein said gas inlet and gas outlet passageways are coaxial along an axis perpendicularly bisecting the axis of said cylindrical transverse bore.
Claim 4
Dependent Claim
32 words
A gas-shielded water-cooled electric welding torch as defined in claim 2, wherein said cylindrical transverse bore and said gas inlet and gas outlet passageways comprise drilled openings in said torch body member.
Claim 5
Dependent Claim
40 words
A gas-shielded water-cooled electric welding torch as defined in claim 3, including means for conducting a coolant through said body member for cooling the torch head, said coolant-conducting means comprising a pair of passageways extending longitudinally through said body member.
Claim 6
Dependent Claim
40 words
A gas-shielded water-cooled electric welding torch as defined in claim 3, wherein said bolting means comprises a sleeve nut extending through axial bores in said first and second valve stem sections and a machine screw threaded in said sleeve nut.
Claim 7
Dependent Claim
23 words
A gas-shielded water-cooled electric welding torch as defined in claim 5, including means for securing said valve stem sections in end-to-end interfitting engagement.
Claim 8
Dependent Claim
45 words
A gas-shielded water-cooled electric welding torch as defined in claim 5, wherein said securing means comprises a short, tapered cylindrical key portion formed on one of said valve stem sections receivable in a complementary tapered circular recess in the other of said valve stem sections.
Claim 9
Dependent Claim
29 words
A gas-shielded water-cooled electric welding torch as defined in claim 5, including means for individually sealing said first and second valve stem sections with respect to said transverse bore.
Claim 10
Dependent Claim
31 words
A gas-shielded water-cooled electric welding torch as defined in claim 8, wherein said sealing means comprises resilient O-rings seated within annular grooves provided in said first and second valve stem sections.
References Cited (Backward Citations)
US3238350A
Cited
US3516639A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |