Patent US3774005A successfully refreshed from Google Patents.
US3774005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chucking means for large flanged studs when automatically feeding studs thru rear of chuck
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1970-04-23
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Granted: 1973-11-20
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Expires: 1990-04-23
Abstract
Abstract A chuck assembly for holding headed studs by the shank including a split sleeve for holding the shank as the stud is passed head first through the resilient tapered fingers of the chuck. The fingers of the chuck are first spread open to pass the head then allowed to snap onto the outside surfaces of the split sleeve forcing it into abutting circumscribed holding relation with the shank.
Inventors
- 👤 S Spisak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:12
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/20; B23K9/206
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
166 words
A stud welding tool for use with a stud having a head and a shank, said tool having a plunger, plunger means for reciprocating the plunger, means forming a loading chamber for receiving the stud, said chamber means being connected to said tool with the chamber aligned with the plunger and in the path thereof, said chamber means also forming a transverse inlet for receiving studs one at a time therethrough, a chuck at the forward end of said chamber means in alignment with said chamber, said chuck having fingers at a forward end thereof and having an inner wall of cylindrical cross section, a plurality of separate sleeve sections having rear portions pivotally mounted on said plunger, resilient means engageable with said sleeve sections rearwardly of the rear portions and urging the forward portions of said sleeve sections outwardly toward the inner wall of said chuck, whereby the forward ends of said sleeve sections can be more easily received around the shank of the stud.
Claim 2
Dependent Claim
166 words
A stud welding tool for use with a stud having a head and a shank, said tool having a plunger, plunger means for reciprocating the plunger, means forming a loading chamber for receiving the stud, said chamber means being connected to said tool with the chamber aligned with the plunger and in the path thereof, said chamber means also forming a transverse inlet for receiving studs one at a time therethrough, a chuck at the forward end of said chamber means in alignment with said chamber, said chuck having fingers at a forward end thereof and having an inner wall of cylindrical cross section, a plurality of separate sleeve sections having rear portions pivotally mounted on said plunger, resilient means engageable with said sleeve sections rearwardly of the rear portions and urging the forward portions of said sleeve sections outwardly toward the inner wall of said chuck, whereby the forward ends of said sleeve sections can be more easily received around the shank of the stud.
Claim 3
Dependent Claim
45 words
A stud welding tool according to claim 1 characterized by said sleeve sections having notches to the rear of said rear portions thereof, said notches forming an annular groove around said sleeve sections and said resilient means comprising a resilient circular member in said groove.
Claim 4
Dependent Claim
38 words
A stud welding tool according to claim 2 characterized by said plunger having an enlarged portion at the forward end thereof on which said sleeve portions are pivoted, and said plunger having a groove therearound behind said enlargement.
Claim 5
Dependent Claim
20 words
Apparatus according to claim 1 characterized by each of said sleeve sections having inwardly and rearwardly extending forward beveled edges.
Claim 6
Dependent Claim
31 words
A stud welding tool according to claim 1 characterized by said sleeves having stud stops spaced from the forward edges thereof to receive the rearwardly extending end of the stud shank.
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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |