US3822835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape cartridge
Assignee: Tapecaster TCM Inc
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Filing: 1973-03-23
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Granted: 1974-07-09
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Expires: 1993-03-23
Abstract
Abstract An endless tape cartridge is designed to reduce azimuth and phase errors. The tape is guided from the innermost convolution of the coil to a point on one side wall of the cartridge housing near a rear corner and is moved along this wall and around a machined metal guide post at the corner of the side wall and the front wall of the housing. A frictional drag is imparted to the tape by a foam pad which engages the tape at a point along the side wall, thus adjusting the tension in the tape before it is guided by the machined guide post. In order to rigidify the cartridge housing, the top and bottom walls thereof are provided with deep ribs, and tongue and groove mating is used between the cover and base of the housing. The cartridge also includes foam backing pads adjacent the transducer openings. These pads include a relatively rigid plastic base and a foam body. The rigid base is received between spaced posts on opposite sides of the pad, the front post of each pair of gripping and deforming the foam body to retain the pressure pad in position.
Inventors
- 👤 P Shore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:03
CPC Classifications
B; B65; B65H; B65H20/00; B65H20/26
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
218 words
An endless tape cartridge for use with a recording-playback machine of the type having at least one transducer head and drive means spaced therefrom for advancing the tape past said transducer head, comprising: a housing having spaced top and bottom walls and a front, a rear and two side walls extending between said top and bottom walls, said front wall being provided with at least one opening for receiving said at least one transducer; an endless tape coil within said housing, said endless tape coil having a loop of tape extending from its innermost convolution and returning to its outermost convolution; guide means for guiding said loop from said innermost convolution to a point on one of said side walls, along said one side wall, around a guide post positioned at the corner between said one side wall and said front wall, along said front wall past said opening, and to said outermost convolution; and friction drag means engaging said tape loop along said one side wall for adjusting the tension of said tape loop so that it may be guided accurately by said guide post past said transducer means, said friction drag means comprising a foam pad engaging one side of said tape, the other side of said tape being in engagement with said one side wall.
Claim 2
Dependent Claim
218 words
An endless tape cartridge for use with a recording-playback machine of the type having at least one transducer head and drive means spaced therefrom for advancing the tape past said transducer head, comprising: a housing having spaced top and bottom walls and a front, a rear and two side walls extending between said top and bottom walls, said front wall being provided with at least one opening for receiving said at least one transducer; an endless tape coil within said housing, said endless tape coil having a loop of tape extending from its innermost convolution and returning to its outermost convolution; guide means for guiding said loop from said innermost convolution to a point on one of said side walls, along said one side wall, around a guide post positioned at the corner between said one side wall and said front wall, along said front wall past said opening, and to said outermost convolution; and friction drag means engaging said tape loop along said one side wall for adjusting the tension of said tape loop so that it may be guided accurately by said guide post past said transducer means, said friction drag means comprising a foam pad engaging one side of said tape, the other side of said tape being in engagement with said one side wall.
Claim 3
Dependent Claim
39 words
A cartridge as recited in claim 1, further comprising a pad retaining wall spaced from and parallel to said one side wall, said foam pad being retained between said pad retaining wall and said one side of said tape.
Claim 4
Dependent Claim
54 words
A cartridge as recited in claim 2, wherein said pad retaining wall includes a shoulder extending from the end of said pad retaining wall most adjacent to said front wall for restraining said foam pad from movement towards said front wall as said tape is pulled towards said front wall by said drive means.
Claim 5
Dependent Claim
354 words
An endless tape cartridge for use with a recording-playback machine of the type having at least one transducer head and drive means spaced therefrom for advancing the tape past said transducer head, comprising: a housing having spaced top and bottom walls and a front, a rear and two side walls extending between said top and bottom walls, said front wall being provided with at least one opening for receiving said at least one transducer; an endless tape coil within said housing, said endless tape coil having a loop of tape extending from its innermost convolution and returning to its outermost convolution; guide means for guiding said loop from said innermost convolution to a point on one of said side walls, along said one side wall, around a guide post positioned at the corner between said one side wall and said front wall, along said front wall past said opening, and to said outermost convolution; and friction drag means engaging said tape loop along said one side wall for adjusting the tension of said tape loop so that it may be guided accurately by said guide post past said transducer means, said guide means comprising a first guide pin adjacent said rear wall and a second guide pin adjacent said one side wall, said tape loop being guided from said innermost convolution to said first guide pin, and from said second guide pin along said one side wall to said guide post, and said guide means further comprising a guide wire extending over said coil between said innermost convolution and said rear wall, said guide wire having an inclined portion over which said tape is guided as it moves from said innermost convolution to said first guide pin, said cartridge further comprising a pair of posts upstanding from said bottom wall respectively adjacent said two side walls, each of said posts having a central bore for receiving the ends of said guide wire, said ends of said guide wire being bent downwardly from said guide wire and said guide wire being Bridged between said posts, one of said upstanding posts being said second guide pin.
Claim 6
Dependent Claim
354 words
An endless tape cartridge for use with a recording-playback machine of the type having at least one transducer head and drive means spaced therefrom for advancing the tape past said transducer head, comprising: a housing having spaced top and bottom walls and a front, a rear and two side walls extending between said top and bottom walls, said front wall being provided with at least one opening for receiving said at least one transducer; an endless tape coil within said housing, said endless tape coil having a loop of tape extending from its innermost convolution and returning to its outermost convolution; guide means for guiding said loop from said innermost convolution to a point on one of said side walls, along said one side wall, around a guide post positioned at the corner between said one side wall and said front wall, along said front wall past said opening, and to said outermost convolution; and friction drag means engaging said tape loop along said one side wall for adjusting the tension of said tape loop so that it may be guided accurately by said guide post past said transducer means, said guide means comprising a first guide pin adjacent said rear wall and a second guide pin adjacent said one side wall, said tape loop being guided from said innermost convolution to said first guide pin, and from said second guide pin along said one side wall to said guide post, and said guide means further comprising a guide wire extending over said coil between said innermost convolution and said rear wall, said guide wire having an inclined portion over which said tape is guided as it moves from said innermost convolution to said first guide pin, said cartridge further comprising a pair of posts upstanding from said bottom wall respectively adjacent said two side walls, each of said posts having a central bore for receiving the ends of said guide wire, said ends of said guide wire being bent downwardly from said guide wire and said guide wire being Bridged between said posts, one of said upstanding posts being said second guide pin.
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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) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |