Patent US4234137A successfully refreshed from Google Patents.
US4234137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape reel for video tape cassette
Assignee: Nifco Inc
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Filing: 1979-08-13
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Granted: 1980-11-18
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Expires: 1999-08-13
Abstract
Abstract Disclosed herein is an improvement in and concerning a tape reel of the type used in a video tape cassette and comprising a hub, flanges disposed one each at the opposite axial ends of the hub, and a small protuberance formed at the center of at least one end surface of the hub and adapted for engagement with a matching socket in the tape reel holder of the cassette housing, which improvement resides in the construction of the tape reel wherein a member for carrying the aforementioned small protuberance is produced, independently of the flanges and the hub, of a resin resistant to abrasion in a design such that the assemblage of the reel is accomplished by fixing the flanges onto the hub through the medium of the small protuberance carrier member.
Inventors
- 👤 Koji Watanabe
- 👤 Akira Nakagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:50
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/037
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
153 words
A tape reel for a video tape cassette, comprising: a hub having first and second end surfaces; a first flange disposed on said first end surface of said hub; first engaging means carried by said hub near said second end surface; a second flange having a plurality of openings and arranged to be positioned against said hub second end surface; a carrier member having a small integrally formed protuberance at the center of one surface ad resilient second engaging means disposed on the other surface thereof, said carrier member being arranged to contact said second flange opposite said hub second end surface with said second engaging means passing through said openings of said second flange and resiliently lockingly engaging said first engaging means of said hub, whereby the locking engagement between said first and second engaging means fixes said second flange between said carrier member and said second end surface of said hub.
Claim 2
Dependent Claim
153 words
A tape reel for a video tape cassette, comprising: a hub having first and second end surfaces; a first flange disposed on said first end surface of said hub; first engaging means carried by said hub near said second end surface; a second flange having a plurality of openings and arranged to be positioned against said hub second end surface; a carrier member having a small integrally formed protuberance at the center of one surface ad resilient second engaging means disposed on the other surface thereof, said carrier member being arranged to contact said second flange opposite said hub second end surface with said second engaging means passing through said openings of said second flange and resiliently lockingly engaging said first engaging means of said hub, whereby the locking engagement between said first and second engaging means fixes said second flange between said carrier member and said second end surface of said hub.
Claim 3
Dependent Claim
22 words
A tape reel according to claim 1, wherein said first flange is integrally formed with said first end surface of said hub.
Claim 4
Dependent Claim
19 words
A tape reel according to claim 1, wherein said carrier member is integrally molded of a wear resistant resin.
Claim 5
Dependent Claim
14 words
A tape reel according to claim 3, wherein said wear resistant resin is polyacetal.
Claim 6
Dependent Claim
163 words
A tape reel for a tape cassette, comprising: a hub having first and second ends formed from a first material, said hub including engaging means near said second end; a first flange formed from said first material fixed to said hub first end; a second flange formed from said first material arranged to be positioned against said hub second end and including opening means; and a substantially planar carrier member formed from a second material and defining a surface dimension substantially less than the surface dimension of said second flange, said carrier member having a major surface portion arranged to contact said second flange opposite said hub; a centrally disposed protuberance arranged to extend in a direction opposite said second flange, and resilient latch means arranged to extend through said second flange opening means and lockingly engage said engaging means of said hub for fixing said second flange and said carrier member to said hub while minimizing the use of said second material.
Claim 7
Dependent Claim
163 words
A tape reel for a tape cassette, comprising: a hub having first and second ends formed from a first material, said hub including engaging means near said second end; a first flange formed from said first material fixed to said hub first end; a second flange formed from said first material arranged to be positioned against said hub second end and including opening means; and a substantially planar carrier member formed from a second material and defining a surface dimension substantially less than the surface dimension of said second flange, said carrier member having a major surface portion arranged to contact said second flange opposite said hub; a centrally disposed protuberance arranged to extend in a direction opposite said second flange, and resilient latch means arranged to extend through said second flange opening means and lockingly engage said engaging means of said hub for fixing said second flange and said carrier member to said hub while minimizing the use of said second material.
Claim 8
Dependent Claim
55 words
A tape reel as defined in claim 5 wherein said second flange further includes a recessed portion dimension for receiving said carrier member and having a depth substantially equal to the thickness of said carrier member for rendering the surfaces of said second flange and said carrier member opposite said hub substantially co-planar when assembled.
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) | 1983-11-18 | 1984-05-19 | 1984-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-18 | 1988-05-19 | 1988-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-18 | 1992-05-19 | 1992-11-18 | $7700.00 | Window Closed / Lapsed |