US3647129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stud feeding system for welding tools
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1970-03-13
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Granted: 1972-03-07
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Expires: 1990-03-13
Abstract
Abstract Studs to be welded are blown into a loading chamber behind a chuck of a stud-welding tool and then move into the front of the chuck where they are backed up by a plunger. An air nozzle communicates with the chamber and directs air rearwardly toward a stud fed into the chamber to urge the stud away from the chamber inlet in a manner to substantially eliminate stud jamming. The air preferably is supplied from an air cylinder which drives the plunger.
Inventors
- 👤 Don E Ehrlich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:40
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/002; B23K11/004; B23K11/0046; B23K11/0053; B21; B21J; B21J15/00; B21J15/10; B21J15/30; B21J15/32; B23K9/00; B23K9/20; B23K9/206
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
106 words
Apparatus for handling studs comprising a chuck having a passage therein, loading means behind said chuck, said means having a chamber communicating with said passage, said loading means having a side inlet, means for propelling a stud through said inlet into said chamber in a direction transverse to the longitudinal extent of said passage, and force means associated with said loading means for directing a force against a stud in a direction away from said chuck when the stud is in said chamber, said force means comprising a fluid passage communicating with said chamber, and a source of fluid for directing fluid through said fluid passage.
Claim 2
Dependent Claim
106 words
Apparatus for handling studs comprising a chuck having a passage therein, loading means behind said chuck, said means having a chamber communicating with said passage, said loading means having a side inlet, means for propelling a stud through said inlet into said chamber in a direction transverse to the longitudinal extent of said passage, and force means associated with said loading means for directing a force against a stud in a direction away from said chuck when the stud is in said chamber, said force means comprising a fluid passage communicating with said chamber, and a source of fluid for directing fluid through said fluid passage.
Claim 3
Dependent Claim
35 words
Apparatus according to claim 1 characterized by a plunger for backing up a stud in the chuck, and air-operated means for moving said plunger and also constituting the source of fluid for said fluid passage.
Claim 4
Dependent Claim
53 words
Apparatus according to claim 1 characterized by said fluid passage means communicating with said chamber on the side thereof opposite said stud inlet and positioned to direct fluid against the stud in the chamber in a manner to urge the forward end of the stud in a direction away from said stud inlet.
Claim 5
Dependent Claim
42 words
Apparatus according to claim 3 characterized by the stud having a head and a stem and the fluid is directed to apply force on the underside of the head to move the stem away from a forward edge of said stud inlet.
References Cited (Backward Citations)
US3104395A
Cited
US3448236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |