Patent US3987900A successfully refreshed from Google Patents.
US3987900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jacket for magnetic disc memory
Assignee: Fujifilm Holdings Corp
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Filing: 1975-08-22
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Granted: 1976-10-26
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Expires: 1995-08-22
Abstract
Abstract A foldable jacket made of a sheet material of rectangular shape and folded at the central portion thereof to form a square base sheet and a square cover sheet. The cover sheet is provided with a cut-away portion extending from an edge opposite to the folded edge to the central part thereof. The base sheet is provided with a disc holding portion at the central part thereof to be engaged with a central hole of the disc. The disc holding portion is composed of a stem portion and engaging portions. The engaging portions are made flexible and releasably engaged with the hole of the disc.
Inventors
- 👤 Eiichi Tadokoro
- 👤 Akira Ishii
- 👤 Tatsuji Kitamoto
- 👤 Osamu Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:47
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/03; B; B65; B65D; B65D85/00; G11B17/00; G11B17/02; G11B17/04; G11B33/00; G11B33/02; G11B33/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
133 words
A jacket for retaining a magnetic disc memory comprising a cover sheet of substantially square shape, and a base sheet of substantially the same size and shape as that of said cover sheet and hinged at an edge thereof to an edge of said cover sheet, said cover sheet having a cut-away portion extending from an edge thereof opposite to said hinged edge to the central part thereof, the width of said cut-away portion being not less than the diameter of a central hole of said magnetic disc, said base sheet having at the central part thereof a disc holding portion, said disc holding portion comprising a stem portion and a plurality of engaging portions connected with said stem portion, said engaging portions being engageable with said central hole of the magnetic disc.
Claim 2
Dependent Claim
133 words
A jacket for retaining a magnetic disc memory comprising a cover sheet of substantially square shape, and a base sheet of substantially the same size and shape as that of said cover sheet and hinged at an edge thereof to an edge of said cover sheet, said cover sheet having a cut-away portion extending from an edge thereof opposite to said hinged edge to the central part thereof, the width of said cut-away portion being not less than the diameter of a central hole of said magnetic disc, said base sheet having at the central part thereof a disc holding portion, said disc holding portion comprising a stem portion and a plurality of engaging portions connected with said stem portion, said engaging portions being engageable with said central hole of the magnetic disc.
Claim 3
Dependent Claim
38 words
A jacket for retaining a magnetic disc memory as defined in claim 1 wherein said engaging portions of said disc holding portion are flexible tabs which can be bent to be engaged with the hole of the disc.
Claim 4
Dependent Claim
38 words
A jacket for retaining a magnetic disc memory as defined in claim 2 wherein said tabs are formed to extend in the opposite directions to be engaged with the opposite sides of the central hole of the disc.
Claim 5
Dependent Claim
53 words
A jacket for retaining a magnetic disc memory as defined in claim 1 wherein a reinforcing ring is provided to sandwich the disc between the reinforcing ring and the base sheet, the reinforcing ring has a hole which is of substantially the same diameter as that of the central hole of the disc.
References Cited (Backward Citations)
DE371651C
Cited
GB322643A
Cited
DE555632C
Cited
US2471173A
Cited
US2500773A
Cited
US2652922A
Cited
US2832466A
Cited
US3102635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-26 | 1980-04-26 | 1980-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-26 | 1984-04-26 | 1984-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-26 | 1988-04-26 | 1988-10-26 | $7700.00 | Window Closed / Lapsed |