Patent US4012803A successfully refreshed from Google Patents.
US4012803A
Expired / Lapsed
US
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Multiheaded radial type nut tapper
Assignee: Individual
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Filing: 1975-12-29
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Granted: 1977-03-22
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Expires: 1995-12-29
Abstract
Abstract A multiheaded radial type nut tapper having a plurality of push rods arranged in a radial fashion and driven by a cam arranged so that at each revolution of the cam, a number of finished products will be obtained.
Inventors
- 👤 Yuan Ho Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:55
CPC Classifications
B; B23; B23G; B23G9/00; Y; Y10; Y10T; Y10T408/00; Y10T408/36; Y10T408/38; Y10T408/3806
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
145 words
A multiheaded radial type nut tapper comprising: a driving shaft adapted to be driven in rotary motion; a cam provided on said driving shaft; a plurality of push rods disposed radially about said cam and adapted to be driven by said cam in reciprocating motion thereby; means for feeding nut blanks to a position in front of each of said push rods; a plurality of tap driving shafts disposed radially about the driving shaft, each having its respective rotational axis aligned with an axis of one of said push rods; and a plurality of bent taps adapted for rotation with said tap driving shafts, one bent tap being provided within each tap driving shaft so that tapped nuts may be produced from nut blanks successively fed onto said bent taps by said push rods as said drive shaft and said tap driving shafts are rotated.
Claim 2
Dependent Claim
145 words
A multiheaded radial type nut tapper comprising: a driving shaft adapted to be driven in rotary motion; a cam provided on said driving shaft; a plurality of push rods disposed radially about said cam and adapted to be driven by said cam in reciprocating motion thereby; means for feeding nut blanks to a position in front of each of said push rods; a plurality of tap driving shafts disposed radially about the driving shaft, each having its respective rotational axis aligned with an axis of one of said push rods; and a plurality of bent taps adapted for rotation with said tap driving shafts, one bent tap being provided within each tap driving shaft so that tapped nuts may be produced from nut blanks successively fed onto said bent taps by said push rods as said drive shaft and said tap driving shafts are rotated.
Claim 3
Dependent Claim
67 words
A multiheaded radial type nut tapper according to claim 1 wherein said bent taps include tapping heads and said means for feeding nut blanks to a position in front of each push rod include slideways and comprising means defining tapping guide ways positioned between each push rod and the associated tap driving shaft and adapted to have the tapping head of the associated bent tap positioned therein.
Claim 4
Dependent Claim
18 words
A multiheaded radial type nut tapper according to claim 1 comprising means for rotating said tap driving shafts.
Claim 5
Dependent Claim
89 words
A multiheaded radial type nut tapper according to claim 3 wherein said means for rotating said tap driving shafts comprises: gear means provided on said driving shaft; gear means provided on said tap driving shafts; and a plurality of rotary shaft means having gear means provided on each end thereof and positioned to mesh with said gear means on said driving shaft and said gear means on said tap driving shafts so that said tap driving shafts may be rotated as a result of rotation of said driving shaft.
Claim 6
Dependent Claim
67 words
A multiheaded radial type nut tapper according to claim 3 wherein said means for rotating said tap driving shafts comprises: gear means provided on said tap driving shafts; and bevel gear means supported on said driving shaft and meshed with said gear means provided on said tap driving shafts so that said tap driving shafts may be rotated as a result of rotation of said driving shaft.
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) | 1980-03-21 | 1980-09-20 | 1981-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-21 | 1984-09-20 | 1985-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-21 | 1988-09-20 | 1989-03-22 | $7700.00 | Window Closed / Lapsed |