US3218648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording head holder
Assignee: Ex-Cell-O Corp
•
Filing: 1960-12-16
•
Granted: 1965-11-16
•
Expires: 1980-12-16
Abstract
No abstract record available.
Inventors
- 👤 James P Casey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:42
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17761
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
97 words
IN A RECORDING HEAD HOLDER HAVING A FIRST BORE FOR THE ACCEPTANCE OF A CYLINDRICAL RECORDING HEAD, MEANS FOR LOCKING THE RECORDING HEAD AGAINST AXIAL MOVEMENT OF SAID FIRST BORE COMPRISING A SECOND BORE EXTENDING INTO CLOSE PROXIMATE RELATION TO BUT NOT COMMUNICATING WITH SAID FIRST BORE, THE AXES OF SAID FIRST AND SECOND BORES INTERSECTING AT A RIGHT ANGLE SO THAT AN END WALL OF SAID SECOND BORE DEFINES A RELATIVELY THIN SIDE WALL OF SAID FIRST BORE, A BALL WITHIN SAID SECOND BORE, AND MEANS FOR EFFECTING MOVEMENT OF SAID BALL AXIALLY OF SAID SECOND
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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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |