US3096949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air expandable core shaft
Assignee: Hamilton Tool Co
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Filing: 1958-01-15
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Granted: 1963-07-09
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Expires: 1978-01-15
Abstract
No abstract record available.
Inventors
- 👤 Harold W Huffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:03
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/18; B65H75/24; B65H75/242; B65H75/243; B65H75/2437; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1021; Y10T279/1024; Y10T279/1029
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
IN A DEVICE OF THE CLASS DESCRIBED, THE COMBINATION OF A LONGITUDINALLY BORED ONE-PIECE SHAFT HAVING OPPOSITE ENDS AND AN INTERMEDIATE PORTION, SAID INTERMEDIATE PORTION BEING PROVIDED WITH A SERIES OF SHALLOW ANNULAR GROOVES ALTERNATED WITH ANNULAR RIDGE AREAS ALONG THE LENGTH OF THE INTERMEDIATE PORTION OF THE SHAFT, AND EACH SHALLOW GROOVE HAVING THEREIN A TRANSVERSE OPENING PLACING EACH GROOVE HAVING THEREIN A TRANSVERSE OPENING PLACING BORE OF THE SHAFT, AND A RESILIENT AIR-IMPERMEABLE TUBE COVERING SUBSTANTIALLY THE FULL LENGTH OF THE INTERMEDIATE PORTION OF THE SHAFT AND ALL THE SHALLOW GROOVES THEREIN FORMED, SAID TUBE BEING VULCANIZED TO THE SHAFT AT ALL AREAS BETWEEN AND ADJACENT TO EACH GROOVE.
Claim 2
Dependent Claim
111 words
IN A DEVICE OF THE CLASS DESCRIBED, THE COMBINATION OF A LONGITUDINALLY BORED ONE-PIECE SHAFT HAVING OPPOSITE ENDS AND AN INTERMEDIATE PORTION, SAID INTERMEDIATE PORTION BEING PROVIDED WITH A SERIES OF SHALLOW ANNULAR GROOVES ALTERNATED WITH ANNULAR RIDGE AREAS ALONG THE LENGTH OF THE INTERMEDIATE PORTION OF THE SHAFT, AND EACH SHALLOW GROOVE HAVING THEREIN A TRANSVERSE OPENING PLACING EACH GROOVE HAVING THEREIN A TRANSVERSE OPENING PLACING BORE OF THE SHAFT, AND A RESILIENT AIR-IMPERMEABLE TUBE COVERING SUBSTANTIALLY THE FULL LENGTH OF THE INTERMEDIATE PORTION OF THE SHAFT AND ALL THE SHALLOW GROOVES THEREIN FORMED, SAID TUBE BEING VULCANIZED TO THE SHAFT AT ALL AREAS BETWEEN AND ADJACENT TO EACH GROOVE.
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) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |