US3146576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making hollow flexible shafting
Assignee: Individual
•
Filing: 1960-07-20
•
Granted: 1964-09-01
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Expires: 1980-07-20
Abstract
No abstract record available.
Inventors
- 👤 Wezel Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:36
CPC Classifications
B; B21; B21F; B21F45/00; B21F45/06; B21F17/00; C; C07; C07C; C07C233/00; C07C233/90; F; F16; F16C; F16C1/00; F16C1/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981; Y10T74/00; Y10T74/20; Y10T74/20396; Y10T74/20402; Y10T74/20456
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PROCESS OF MANUFACTURING HOLLOW FLEXIBLE SHAFTING, COMPRISING THE STEPS OF MACHINE-WINDING IN SUPERIMPOSED LAYERS AND IN ALTERNATING HELICAL DIRECTIONS A PLURALITY OF WIRE COILS ON A TEMPORARY CENTRAL CYLINDRICAL MANDREL CONSISTING OF NON-METALLIC MATERIAL DESTRUCTIBLE BY A DESTROYING AGENT; AND THEREAFTER DESTROYING SAID MANDREL BY SAID DESTROYING AGENT, WHEREBY A HOLLOW FLEXIBLE SHAFTING OF HIGH FLEXIBILITY IS OBTAINED.
Claim 2
Dependent Claim
59 words
A PROCESS OF MANUFACTURING HOLLOW FLEXIBLE SHAFTING, COMPRISING THE STEPS OF MACHINE-WINDING IN SUPERIMPOSED LAYERS AND IN ALTERNATING HELICAL DIRECTIONS A PLURALITY OF WIRE COILS ON A TEMPORARY CENTRAL CYLINDRICAL MANDREL CONSISTING OF NON-METALLIC MATERIAL DESTRUCTIBLE BY A DESTROYING AGENT; AND THEREAFTER DESTROYING SAID MANDREL BY SAID DESTROYING AGENT, WHEREBY A HOLLOW FLEXIBLE SHAFTING OF HIGH FLEXIBILITY IS OBTAINED.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |