US3990733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hub for magnetic tape
Assignee: TDK Corp
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Filing: 1975-10-30
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Granted: 1976-11-09
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Expires: 1995-10-30
Abstract
Abstract A hub for winding a magnetic tape thereon comprises a clamp for retaining one end of a magnetic tape. The novel tape clamp comprises a substantially rigid upper web, a resilient lower web and a pair of legs depending from the ends of the upper web and connected to the ends of the lower web. The lower web supplements the resilient force of the legs. As the upper web is not subjected to a stress, the magnetic tape is wound properly on the upper web.
Inventors
- 👤 Haruo Shiba
- 👤 Kimio Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:47
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/037
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
62 words
A hub for winding a magnetic tape thereon, including a recess on the periphery of said hub and a tape clamp received in said recess, characterized in that said clamp comprises a substantially rigid upper web, a pair of resilient legs jointed to the opposite ends of said upper web, and a resilient lower web connecting the lower ends of said legs.
Claim 2
Dependent Claim
62 words
A hub for winding a magnetic tape thereon, including a recess on the periphery of said hub and a tape clamp received in said recess, characterized in that said clamp comprises a substantially rigid upper web, a pair of resilient legs jointed to the opposite ends of said upper web, and a resilient lower web connecting the lower ends of said legs.
Claim 3
Dependent Claim
19 words
A hub according to claim 1, wherein said clamp is formed from a plastic material as an integral unit.
Claim 4
Dependent Claim
27 words
A hub according to claim 1, wherein the lower ends of said legs are provided with stop ears adapted to be received in slots in the recess.
Claim 5
Dependent Claim
22 words
A hub according to claim 1, wherein said resilient lower web is arcuated upwardly at least at a portion of its length.
Claim 6
Dependent Claim
27 words
A hub according to claim 1, wherein said pair of legs and the lower web have, in combination, a sufficient restoring force to clamp a magnetic tape.
Claim 7
Dependent Claim
49 words
A hub according to claim 2, wherein said upper web is made thick and said legs and said lower web are made thin in such degree that the upper web is substantially rigid while the legs and the lower web are substantially resilient and have a sufficient restoring force.
Claim 8
Dependent Claim
47 words
A tape clamp for clamping one end of a magnetic tape on a hub, which comprises a substantially rigid upper web, a pair of resilient legs jointed to the opposite ends of said upper web, and a resilient lower web connecting the lower ends of said legs.
Claim 9
Dependent Claim
47 words
A tape clamp for clamping one end of a magnetic tape on a hub, which comprises a substantially rigid upper web, a pair of resilient legs jointed to the opposite ends of said upper web, and a resilient lower web connecting the lower ends of said legs.
Claim 10
Dependent Claim
20 words
A tape clamp according to claim 7, wherein said clamp is formed from a plastic material as an integral unit.
Claim 11
Dependent Claim
28 words
A tape clamp according to claim 7, wherein the lower ends of said legs are provided with stop ears adapted to be fit in slots in the hub.
Claim 12
Dependent Claim
23 words
A tape clamp according to claim 7, wherein said resilient lower web is arcuated upwardly at least at a portion of its length.
Claim 13
Dependent Claim
28 words
A tape clamp according to claim 7, wherein said pair of legs and the lower web have, in combination, a sufficient restoring force to clamp a magnetic tape.
Claim 14
Dependent Claim
50 words
A tape clamp according to claim 8, wherein said upper web is made thick and said legs and said lower web are made thin in such degree that the upper web is substantially rigid while the legs and the lower web are substantially resilient and have a sufficient restoring force.
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) | 1979-11-09 | 1980-05-10 | 1980-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-09 | 1984-05-10 | 1984-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-09 | 1988-05-10 | 1988-11-09 | $7700.00 | Window Closed / Lapsed |