Patent US3283559A successfully refreshed from Google Patents.
US3283559A
Expired / Lapsed
US
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Manufacture of involute toothed gear wheels
Assignee: FORMROLL Ltd
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Filing: 1962-03-12
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Granted: 1966-11-08
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Expires: 1982-03-12
Abstract
No abstract record available.
Inventors
- 👤 Clerk Robert Cecil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:35
CPC Classifications
B; B21; B21H; B21H5/00; B21H5/02; B21H5/027; B21H5/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A RACK FOR FINISHING A PART FINISHED OR BADLY FINISHED GEAR WHEEL BLANK, BY ROLLING THE BLANK BETWEEN A PAIR OF SUCH RACKS OPPOSITELY DIRECTED AND OPPOSITELY MOVED, THE TEETH OF WHICH ARE FORMED TO A PRESSURE ANGLE APPRECIABLY GREATER THAN THE PRESSURE ANGLE OF THE PARTIALLY FORMED TEETH OF THE BLANK BEING WORKED, THE INCREASE IN PITCH BETWEEN THE TEETH OF THE FORMING RACK AND THE TEETH OF THE BLANK BEING WORKED BEING SUBSTANTIALLY INVERSELY PROPORTIONAL TO THE COSINES OF THE PRESSURE ANGLES OF THE TOOTH OF THE GEAR BEING WORKED AND THE RACK TEETH.
Claim 2
Dependent Claim
96 words
A RACK FOR FINISHING A PART FINISHED OR BADLY FINISHED GEAR WHEEL BLANK, BY ROLLING THE BLANK BETWEEN A PAIR OF SUCH RACKS OPPOSITELY DIRECTED AND OPPOSITELY MOVED, THE TEETH OF WHICH ARE FORMED TO A PRESSURE ANGLE APPRECIABLY GREATER THAN THE PRESSURE ANGLE OF THE PARTIALLY FORMED TEETH OF THE BLANK BEING WORKED, THE INCREASE IN PITCH BETWEEN THE TEETH OF THE FORMING RACK AND THE TEETH OF THE BLANK BEING WORKED BEING SUBSTANTIALLY INVERSELY PROPORTIONAL TO THE COSINES OF THE PRESSURE ANGLES OF THE TOOTH OF THE GEAR BEING WORKED AND THE RACK TEETH.
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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |