US3837599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cassette
Assignee: Polygon Concepts Inc
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Filing: 1972-05-26
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Granted: 1974-09-24
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Expires: 1992-05-26
Abstract
Abstract A cassette comprising a pair of identical sleeves in mating relationship enclose a tape reel and hub assembly, a tape guiding and tensioning member assembly and a tape back-up pressure assembly. The sleeves are inserted within a body member and removably held therein mechanically. The construction eliminates the need for sonic welding and liquid bonding. The elimination of undercuts in the design and the above method of assembly permits the use of low cost materials and manufacturing techniques. For tape control during tape run-up, running, and changing of the direction of tape movement there is provided tape guiding and tensioning members in the form of a plurality of self-adjusting idler rollers which absorb tape shock and slacks for reducing whipping, looping, spilling and other tape jamming events. A plurality of cantilever mounted resilient spring-like members are further provided for applying a variable degree of retarding force through friction to tape reel hubs to further reduce tape jamming. To permit removal of the sleeves and various assemblies enclosed therein, the sleeves are provided with means for manually releasing the sleeves from the body member. In an alternative embodiment, a tape hub or hub ring with diametrically opposed raised portions is provided for reducing friction. For improved tape pack uniformity a hub with a plurality of radially extending blades to form a reel is provided. A flexible tape retaining member in a hub for automatic machine tape loading is also provided.
Inventors
- 👤 A Souza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:10
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087; G11B23/08707; G11B23/08757; G11B23/08714; G11B23/08728; G11B23/08785
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
129 words
In a cassette having a first wall and a second wall enclosing a rotatable tape hub, the improvement comprising: a first means for slideably supporting said hub in spaced relationship from said first wall at a first point, and a second means spaced from said first means for slideably supporting said hub in spaced relationship from said first wall at a second point for controlling friction forces tending to restrain rotation of said hub about its axis; a first hub ring mounted coaxially with said hub and wherein said first and said second means comprise diametrically opposed portions on said first hub ring which extend from said first hub ring in the direction of said hub for slideably engaging said hub at said first and said second points respectively.
Claim 2
Dependent Claim
129 words
In a cassette having a first wall and a second wall enclosing a rotatable tape hub, the improvement comprising: a first means for slideably supporting said hub in spaced relationship from said first wall at a first point, and a second means spaced from said first means for slideably supporting said hub in spaced relationship from said first wall at a second point for controlling friction forces tending to restrain rotation of said hub about its axis; a first hub ring mounted coaxially with said hub and wherein said first and said second means comprise diametrically opposed portions on said first hub ring which extend from said first hub ring in the direction of said hub for slideably engaging said hub at said first and said second points respectively.
Claim 3
Dependent Claim
35 words
In a cassette according to claim 1, the improvement further comprising: a second hub ring concentric with said first hub ring and fixedly mounted to at least one of said first and said second walls.
Claim 4
Dependent Claim
18 words
In a cassette according to claim 2 wherein said first hub ring is outside said second hub ring.
Claim 5
Dependent Claim
124 words
In a cassette having a first wall and a second wall enclosing a rotatable tape hub, the improvement comprising: a first means for slideably supporting said hub in spaced relationship from said first wall at a first point, and a second means spaced from said first means for slideably supporting said hub in spaced relationship from said first wall at a second point for controlling friction forces tending to restrain rotation of said hub about its axis, wherein said first and said second means comprise a first and a second diametrically opposed portion of said hub, each of said portions extending outwardly from said hub in a direction toward said first wall for slideably engaging said wall at said first and Said second points.
Claim 6
Dependent Claim
124 words
In a cassette having a first wall and a second wall enclosing a rotatable tape hub, the improvement comprising: a first means for slideably supporting said hub in spaced relationship from said first wall at a first point, and a second means spaced from said first means for slideably supporting said hub in spaced relationship from said first wall at a second point for controlling friction forces tending to restrain rotation of said hub about its axis, wherein said first and said second means comprise a first and a second diametrically opposed portion of said hub, each of said portions extending outwardly from said hub in a direction toward said first wall for slideably engaging said wall at said first and Said second points.
Claim 7
Dependent Claim
32 words
In a cassette according to claim 4 wherein said first and said second diametrically opposed portions each comprise a thin arcuate resilient strip attached at least at one end to said hub.
Claim 8
Dependent Claim
261 words
In a cassette having a housing comprising a first wall and a second wall enclosing a rotatable tape hub, said hub having an upper and a lower surface normal to its axis of rotation, the improvement comprising: a cavity interior of a peripheral wall portion of said hub having a base portion extending substantially normal to said substantially rigid immovable periphery and said upper and lower surfaces, said peripheral wall portion of said hub serving as an outer wall of said cavity; a slot extending through at least a portion of said peripheral wall portion of said hub to said cavity at a point spaced from said base portion for receiving a tape to be wound about the periphery of and coaxial with said hub; an elongated member interior of said peripheral wall portion of said hub having one end attached to said hub at said base of said cavity and a free end extending to a position adjacent said slot, said member being flexible and pivotable about an axis adjacent its attached end and responsive to the insertion and partial withdrawal of a tape wrapped about its free end for moving outwardly to be tightly captured with said tape about its free end in a recess in the end of said cavity; and a recess in the end of said cavity opposite said base for capturing and releasably retaining said free end of said elongated member and said tape when said tape is inserted in and partially withdrawn from said cavity for providing loading of said tape on said hub.
Claim 9
Dependent Claim
261 words
In a cassette having a housing comprising a first wall and a second wall enclosing a rotatable tape hub, said hub having an upper and a lower surface normal to its axis of rotation, the improvement comprising: a cavity interior of a peripheral wall portion of said hub having a base portion extending substantially normal to said substantially rigid immovable periphery and said upper and lower surfaces, said peripheral wall portion of said hub serving as an outer wall of said cavity; a slot extending through at least a portion of said peripheral wall portion of said hub to said cavity at a point spaced from said base portion for receiving a tape to be wound about the periphery of and coaxial with said hub; an elongated member interior of said peripheral wall portion of said hub having one end attached to said hub at said base of said cavity and a free end extending to a position adjacent said slot, said member being flexible and pivotable about an axis adjacent its attached end and responsive to the insertion and partial withdrawal of a tape wrapped about its free end for moving outwardly to be tightly captured with said tape about its free end in a recess in the end of said cavity; and a recess in the end of said cavity opposite said base for capturing and releasably retaining said free end of said elongated member and said tape when said tape is inserted in and partially withdrawn from said cavity for providing loading of said tape on said hub.
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) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |