Patent US3281925A successfully refreshed from Google Patents.
US3281925A
Expired / Lapsed
US
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Method and apparatus for forming toothed parts
Assignee: Individual
•
Filing: 1964-06-11
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Granted: 1966-11-01
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Expires: 1984-06-11
Abstract
No abstract record available.
Inventors
- 👤 Hanna Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:09
CPC Classifications
B; B21; B21H; B21H5/00; B21H5/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49462; Y10T29/49467; Y10T29/49474; Y10T29/49789; Y10T29/49798
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A METHOD OF FORMING A TOOTHED CONTOUR ON A WORKPIECE BY PLASTICALLY DEFORMING THE WORKPIECE, SAID METHOD COMPRISING THE STEPS OF: FEEDING AN UNFORMED WORKPIECE AXIALLY THROUGH THE CENTRAL OPENING OF AN INTEGRAL, CONTINUOUS ANNULUS IN WHICH SAID OPENING HAS A TOOTH-SHAPED CROSS SECTIONAL CONTOUR HAVING EACH PERIPHERAL SEGMENT COMPLEMENTARY TO A CORRESPONDING SEGMENT OF THE CONTOURED WORKPIECE, AND ALTERNATELY APPLYING AND RELEASING AN INWARDLY DIRECTED FORCE ON OPPOSING SEGMENTS OF SAID ANNULUS TO FLEX IT ELASTICALLY AND DISPLACE OPPOSING SEGMENTS OF SAID TOOTH-SHAPED OPENING RADIALLY AROUND THE PERIPHERY INTO AND OUT OF DEFORMING CONTACT WITH SAID WORKPIECE, WHEREBY REPEATED IMPACT OF ALL SECTORS OF SURFACES DEFINING SAID TOOTH-SHAPED OPENING DEFORMS THE EXTERIOR OF SAID WORKPIECE AS IT IS FED THROUGH SAID OPENING AND CONFORMS THE SURFACE OF SAID WORKPIECE TO THE TOOTHED CONTOUR OF SAID OPENING.
Claim 2
Independent Claim
137 words
A METHOD OF FORMING A TOOTHED CONTOUR ON A WORKPIECE BY PLASTICALLY DEFORMING THE WORKPIECE, SAID METHOD COMPRISING THE STEPS OF: FEEDING AN UNFORMED WORKPIECE AXIALLY THROUGH THE CENTRAL OPENING OF AN INTEGRAL, CONTINUOUS ANNULUS IN WHICH SAID OPENING HAS A TOOTH-SHAPED CROSS SECTIONAL CONTOUR HAVING EACH PERIPHERAL SEGMENT COMPLEMENTARY TO A CORRESPONDING SEGMENT OF THE CONTOURED WORKPIECE, AND ALTERNATELY APPLYING AND RELEASING AN INWARDLY DIRECTED FORCE ON OPPOSING SEGMENTS OF SAID ANNULUS TO FLEX IT ELASTICALLY AND DISPLACE OPPOSING SEGMENTS OF SAID TOOTH-SHAPED OPENING RADIALLY AROUND THE PERIPHERY INTO AND OUT OF DEFORMING CONTACT WITH SAID WORKPIECE, WHEREBY REPEATED IMPACT OF ALL SECTORS OF SURFACES DEFINING SAID TOOTH-SHAPED OPENING DEFORMS THE EXTERIOR OF SAID WORKPIECE AS IT IS FED THROUGH SAID OPENING AND CONFORMS THE SURFACE OF SAID WORKPIECE TO THE TOOTHED CONTOUR OF SAID OPENING.
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) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |