US3794258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reel for use with flexible strips
Assignee: Individual
•
Filing: 1972-07-25
•
Granted: 1974-02-26
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Expires: 1992-07-25
Abstract
Abstract A reel for use with flexible strips, for example magnetic tape, assembled from two separate parts, one of the parts, which is made from a glass fiber reinforced plastics material, comprising a side piece from which a core, including a central boss, a windon sleeve and a tie piece, extends transversely and the other part, which is made from a transparent plastics material, having transverse projecting members which cooperate with the core to center the other part, there being a small clearance between the centering members and the core and the parts being held together by a bonding agent which remains pliable after polymerization.
Inventors
- 👤 P P Posso
- 👤 P L Posso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:39
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/037
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
15 words
A reel according to claim 1 wherein the inert centering members include thin flexible members.
Claim 2
Dependent Claim
61 words
A reel according to claim 1 including a second centering member projecting transversely from the second part and arranged to cooperate with the boss of the first part, the second centering member being spaced from the boss by a clearance, a connection between the second centering member and the boss being made by a bonding agent which remains pliable after polymerization.
Claim 3
Dependent Claim
66 words
A reel according to claim 3 including liners on at least one of the first and second centering members arranged to contact the cooperating surface of the other part whereby they can be ultrasonically welded thereto in such a way that the connection can easily be broken, in order to ensure temporary cohesion of the two parts at least during the polymerization of the bonding agent.
Claim 4
Dependent Claim
31 words
A reel accroding to claim 1 wherein the plastics material of the first part is acrylonitrile styrene, filled, to a high degree, with glass fibres having a low coefficient of expansion.
Claim 5
Dependent Claim
19 words
A reel according to claim 4 wherein the bonding agent is a mixture of an acrylic cement and butadiene.
Claim 6
Dependent Claim
118 words
A reel according to claim 1, wherein the annular tie-piece has a cross-section which is narrower at the end thereof adjoining said boss than the opposite end thereof adjoining said sleeve, the cross-section tapering down from the width thereof at said opposite end to the width of said narrower end at a point spaced from said narrower end, and said narrower end being integral with said central boss of the core and said wider opposite end being integral with said sleeve along the whole width of the latter, said tie-piece having spaced protrusions projecting therefrom at the side thereof opposite from said second part and at the sides of said sockets and defining the sides of said sockets.
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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |