Patent US3559861A successfully refreshed from Google Patents.
US3559861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure member and guide for magnetic tape
Assignee: Individual
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Filing: 1967-06-15
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Granted: 1971-02-02
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Expires: 1987-06-15
Abstract
Abstract This disclosure comprises a pressure member for urging magnetic recording tape against the capstan in the tape transport. The pressure member is of a height less than the width of the tape and accordingly, the pressure member engages only the back side of the tape. One embodiment of the pressure member does not rotate and to accommodate tape splices has a plurality of base screws over its face for the threading of tape splices. The pressure member can be positioned by a bifurcated support in a magnetic tape cartridge for precise orientation of the pressure member. For aligning the tape there is disclosed a spoollike guide member at the forward edge of the tape cartridge, the spool being vertically movable as it engages a rigid guide member on the machine to position the spool and the tape with respect to the transducer head.
Inventors
- 👤 Austin A Knox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:47
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/28; G11B15/29
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
113 words
In magnetic tape recording/reproducing apparatus having a transducer, magnetic tape reel means, and a capstan for moving tape past said transducer head, a pressure member for urging the tape against said capstan comprising: A. a curved, low-friction portion for engaging the side of said tape opposite that engaged by said capstan, 1. said curved portion having a plurality of grooves on its tape engaging surface, said grooves being parallel to the direction of tape travel thereover; B. said pressure member having a height in the area contacting said tape of less than the width of said tape; and C. means for urging said pressure member toward said capstan to press said tape thereagainst.
Claim 2
Dependent Claim
113 words
In magnetic tape recording/reproducing apparatus having a transducer, magnetic tape reel means, and a capstan for moving tape past said transducer head, a pressure member for urging the tape against said capstan comprising: A. a curved, low-friction portion for engaging the side of said tape opposite that engaged by said capstan, 1. said curved portion having a plurality of grooves on its tape engaging surface, said grooves being parallel to the direction of tape travel thereover; B. said pressure member having a height in the area contacting said tape of less than the width of said tape; and C. means for urging said pressure member toward said capstan to press said tape thereagainst.
Claim 3
Dependent Claim
91 words
In magnetic tape recording/reproducing apparatus having a transducer, magnetic tape reel means, and a capstan for moving tape past said transducer head, a pressure member for urging the tape against said capstan comprising: A. a curved, low-friction portion for engaging the side of said tape opposite that engaged by said capstan; B. said curved portion having a plurality of grooves on its tape-engaging surface, said grooves being parallel to the direction of tape travel thereover; and C. means for urging said pressure member toward said capstan to press said tape thereagainst.
Claim 4
Dependent Claim
91 words
In magnetic tape recording/reproducing apparatus having a transducer, magnetic tape reel means, and a capstan for moving tape past said transducer head, a pressure member for urging the tape against said capstan comprising: A. a curved, low-friction portion for engaging the side of said tape opposite that engaged by said capstan; B. said curved portion having a plurality of grooves on its tape-engaging surface, said grooves being parallel to the direction of tape travel thereover; and C. means for urging said pressure member toward said capstan to press said tape thereagainst.
Claim 5
Dependent Claim
24 words
means on said rigid member end for retaining said pressure member in a predetermined position with respect to said capstan in said recorder/reproducer, and
Claim 6
Dependent Claim
24 words
means on said rigid member end for retaining said pressure member in a predetermined position with respect to said capstan in said recorder/reproducer, and
Claim 7
Dependent Claim
37 words
said guide member having means forming a central opening therethrough; B. a pin secured to said tape cartridge and slidably supporting said guide member through said central opening; and C. a guide positioning element on said recorder/reproducer,
Claim 8
Dependent Claim
37 words
said guide member having means forming a central opening therethrough; B. a pin secured to said tape cartridge and slidably supporting said guide member through said central opening; and C. a guide positioning element on said recorder/reproducer,
Claim 9
Dependent Claim
20 words
engaging means on said rigid member for engaging a recording/reproducing apparatus to position said cartridge with respect to said capstan.
Claim 10
Dependent Claim
20 words
engaging means on said rigid member for engaging a recording/reproducing apparatus to position said cartridge with respect to said capstan.
Claim 11
Dependent Claim
38 words
In magnetic tape recording/reproducing apparatus having a transducer, magnetic tape reel means, and a capstan for moving tape past said transducer head, a pressure member for urging the tape against said capstan comprising: A. a pressure member roller,
Claim 12
Dependent Claim
38 words
In magnetic tape recording/reproducing apparatus having a transducer, magnetic tape reel means, and a capstan for moving tape past said transducer head, a pressure member for urging the tape against said capstan comprising: A. a pressure member roller,
Claim 13
Dependent Claim
38 words
The pressure member defined in claim 3 wherein said pressure member is mounted in a magnetic cartridge and said means for urging said pressure member toward said capstan comprises spring means urging said pressure member toward said capstan.
Claim 14
Dependent Claim
111 words
In magnetic tape recording/reproducing apparatus having a transducer, magnetic tape reel means, and a capstan for moving tape past said transducer head, a pressure member for urging the tape against said capstan comprising: A. a curved, low-friction portion for engaging the side of said tape opposite that engaged by said capstan; B. said pressure member having a height in the area contacting said tape of less than the width of said tape; C. means for urging said pressure member toward said capstan to press said tape thereagainst; D. a cartridge for holding said magnetic tape reel means, said pressure member and said means for urging said pressure member toward said capstan,
Claim 15
Dependent Claim
111 words
In magnetic tape recording/reproducing apparatus having a transducer, magnetic tape reel means, and a capstan for moving tape past said transducer head, a pressure member for urging the tape against said capstan comprising: A. a curved, low-friction portion for engaging the side of said tape opposite that engaged by said capstan; B. said pressure member having a height in the area contacting said tape of less than the width of said tape; C. means for urging said pressure member toward said capstan to press said tape thereagainst; D. a cartridge for holding said magnetic tape reel means, said pressure member and said means for urging said pressure member toward said capstan,
Claim 16
Dependent Claim
28 words
In magnetic tape recording/reproducing apparatus having a transducer and adapted to receive a magnetic tape cartridge, a tape-locating and positioning assembly comprising: A. a spoollike tape guide member,
Claim 17
Dependent Claim
28 words
In magnetic tape recording/reproducing apparatus having a transducer and adapted to receive a magnetic tape cartridge, a tape-locating and positioning assembly comprising: A. a spoollike tape guide member,
Claim 18
Dependent Claim
55 words
The locating and positioning assembly defined in claim 6 wherein said guide positioning element comprises a bar rigidly mounted at one end and having a double vertical taper at its free end for camming the flanges of said guide member to a holding position along said bar when said cartridge is inserted into the recorder/reproducer.
Claim 19
Dependent Claim
61 words
In a magnetic tape-recording cartridge having a pressure member for urging a recording tape against a capstan when the cartridge is inserted into a recording/reproducing apparatus, a mounting for said pressure member comprising: A. a cartridge housing of relatively thin, inexpensive material enclosing said tape cartridge; and B. an elongated rigid member positioned adjacent the side of said tape cartridge housing,
Claim 20
Dependent Claim
61 words
In a magnetic tape-recording cartridge having a pressure member for urging a recording tape against a capstan when the cartridge is inserted into a recording/reproducing apparatus, a mounting for said pressure member comprising: A. a cartridge housing of relatively thin, inexpensive material enclosing said tape cartridge; and B. an elongated rigid member positioned adjacent the side of said tape cartridge housing,
Claim 21
Dependent Claim
34 words
A magnetic tape-recording cartridge as defined in claim 8 wherein said bifurcated end portion is hinged to said rigid member and resilient means are provided for urging said bifurcated end portion toward said capstan.
Claim 22
Dependent Claim
63 words
A magnetic tape recording cartridge as defined in claim 8 wherein said rigid member is provided with a notched portion between said bifurcated end portion and the remainder of said rigid member to provide a flexible link portion therebetween and resilient means in said notched portion urging said bifurcated portion toward the capstan when said cartridge is inserted into a tape recording/reproducing apparatus.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |