US3796394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cassette
Assignee: SYNCOM TECHNOLOGIES Inc A CORP OF MN
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Filing: 1971-04-22
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Granted: 1974-03-12
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Expires: 1991-04-22
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. This 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 the 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.
Inventors
- 👤 A Souza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:59
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087; G11B23/08707; G11B23/08785; G11B23/08714; G11B23/08728; G11B23/08757
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
183 words
In a cassette having a housing with a first and a second wall enclosing a first tape reel, a second tape reel, a tape back-up pressure assembly and a tape guiding member for guiding tape to and from said first and said second reels disposed in the vicinity of a corner of said housing on either side of said tape back-up pressure assembly, the improvement comprising: an elongated horizontally extending recess provided in the interior surface of at least one of said first and said second walls for receiving said tape guiding member, said recess permitting horizontal movement of said tape guiding member within said recess as said tape is transported past said tape back-up pressure assembly for applying tension to said tape to reduce whipping and looping of said tape wherein said tape guiding member comprises a shaft disposed normal to said horizontal line of movement of said tape guiding member within said recess and said recess is further provided with a slot for receiving said shaft within which said shaft is free to move for providing said tension to said tape.
Claim 2
Dependent Claim
183 words
In a cassette having a housing with a first and a second wall enclosing a first tape reel, a second tape reel, a tape back-up pressure assembly and a tape guiding member for guiding tape to and from said first and said second reels disposed in the vicinity of a corner of said housing on either side of said tape back-up pressure assembly, the improvement comprising: an elongated horizontally extending recess provided in the interior surface of at least one of said first and said second walls for receiving said tape guiding member, said recess permitting horizontal movement of said tape guiding member within said recess as said tape is transported past said tape back-up pressure assembly for applying tension to said tape to reduce whipping and looping of said tape wherein said tape guiding member comprises a shaft disposed normal to said horizontal line of movement of said tape guiding member within said recess and said recess is further provided with a slot for receiving said shaft within which said shaft is free to move for providing said tension to said tape.
Claim 3
Dependent Claim
40 words
In a cassette according to claim 1 wherein said tape guiding member comprises an elongated cylindrically shaped roller adapted to freely rotate about said shaft and having a tape bearing surface extending parallel to said shaft for receiving said tape.
Claim 4
Dependent Claim
41 words
In a cassette according to claim 1 wherein said roller comprises radially extending lips on opposite ends of said tape bearing surface for receiving there between said tape for preventing movement of said tape in a direction parallel with said shaft.
Claim 5
Dependent Claim
79 words
In a cassette having a housing comprising a first wall and a second wall enclosing a rotatable tape reel hub, the improvement comprising; a resilient biasing means mounted within said housing in slideable contact with said reel hub for applying to said reel hub by means of friction a variable retarding force for controlling the speed of rotation of said reel hub about a first axis to reduce tape whipping and looping during normal rotation of said reel hub.
Claim 6
Dependent Claim
79 words
In a cassette having a housing comprising a first wall and a second wall enclosing a rotatable tape reel hub, the improvement comprising; a resilient biasing means mounted within said housing in slideable contact with said reel hub for applying to said reel hub by means of friction a variable retarding force for controlling the speed of rotation of said reel hub about a first axis to reduce tape whipping and looping during normal rotation of said reel hub.
Claim 7
Dependent Claim
54 words
In a cassette according to claim 4, the improvement wherein said resilient biasing means is mounted within said housing in a cantilever fashion and the free end of said resilient biasing means makes slideable contact with a surface of said reel hub disposed normal to said first axis of rotation of said reel hub.
Claim 8
Dependent Claim
74 words
In a cassette according to claim 4, the improvement wherein said reel hub is free to rotate about an axis normal to said first axis of rotation and under the influence of said resilient biasing means assumes an angular position relative to said first and said second walls when said reel hub is not in motion for reducing the starting friction between said reel hub and said resilient biasing means to a negligible amount.
Claim 9
Dependent Claim
66 words
In a cassette, according to claim 6, the improvement wherein said resilient biasing means mounted in cantilever fashion within said housing comprises a first ring-shaped member mounted to said first walls substantially coaxial with said first axis of rotation of said reel hub and wherein the free end of said first ring-shaped member makes contact with the surface of said reel hub facing said first wall.
Claim 10
Dependent Claim
67 words
In a cassette according to claim 7 the improvement wherein said resilient biasing menas mounted in cantilever fashion within said housing further comprises a second ring-shaped member mounted to said second wall substantially coaxial with said first axis of rotation of said heel hub and wherein the free end of said second ring-shaped member makes contact with the surface of said reel hub facing said second wall.
Claim 11
Dependent Claim
28 words
In a cassette according to claim 8 the improvement wherein the free ends of said first and said second ring-shaped members are oppositely directed relative to one another.
Claim 12
Dependent Claim
66 words
A cassette comprising a first sleeve member: a second sleeve member mating with said first sleeve member for forming an enclosure for a tape reel assembly, a tape guiding assembly and a tape back-up pressure assembly; and a body member provided with a cavity or receiving said first and said second sleeve members for holding said first and said second sleeve member together in facing relationship.
Claim 13
Dependent Claim
66 words
A cassette comprising a first sleeve member: a second sleeve member mating with said first sleeve member for forming an enclosure for a tape reel assembly, a tape guiding assembly and a tape back-up pressure assembly; and a body member provided with a cavity or receiving said first and said second sleeve members for holding said first and said second sleeve member together in facing relationship.
Claim 14
Dependent Claim
78 words
A cassette according to claim 10 wherein said first and said second sleeve members comprise a front section enclosing said tape guiding members and said tape back-up pressure assembly; a rear section enclosing said tape reel assembly, said rear section extending rearward from said front section at an outwardly directed angle relative to the surface of said front section; and a first portion extending outwardly from said rear section for engaginG a first portion of said body member.
Claim 15
Dependent Claim
42 words
A cassette according to claim 11 wherein said front portion of said first and said second sleeve members further comprise a side wall and a second portion extending outwardly from said side wall for engaging a second portion of said body member.
Claim 16
Dependent Claim
51 words
A cassette according to claim 12 wherein said first and said second portions of said body member are cutouts and said first and said second portions of said first and said second sleeve members are depressable for releasing and removing said first and said second sleeve members from said body member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |