Patent US3872501A successfully refreshed from Google Patents.
US3872501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive for a linear play adapter for a cassette tape recorder
Assignee: Tapecon Inc
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Filing: 1973-05-24
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Granted: 1975-03-18
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Expires: 1993-05-24
Abstract
Abstract A drive train takes power from the capstan of a host tape recorder to drive an adapter such as for flat cards, etc. A driven element of the drive has a shaft, an elastomeric hub, and a cylindrical elastomeric rim extending downward and having an inside surface engaging the capstan. A rigid cylindrical sleeve around the outside of the elastomeric rim is engaged by the pinch roller of the host recorder, and the driven element turns a drive train that operates the adapter.
Inventors
- 👤 Donald F Mcpherson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:18
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/28; G11B15/32; G11B25/00; G11B25/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
173 words
A drive for an adapter removably insertable in a tape recorder having a capstan and a pinch roller, said drive comprising: a. a driven element including a shaft rotatably supported on said adapter; b. a resilient elastomeric hub fixed to said shaft and extending radially outwardly from said shaft; c. a substantially rigid cylindrical sleeve secured to the periphery of said elastomeric hub and extending axially from said elastomeric hub; d. a layer Of friction material on the inside of said axial extent of said cylindrical sleeve; e. drive means turned by said driven element for operating said adapter; and f. said elastomeric hub and said cylindrical sleeve being configured so said sleeve is engaged by said pinch roller to press said friction material aganist a substantial length of said capstan with said sleeve providing uniform and unyielding control of the speed transfer from said capstan and said elastomeric hub flexing to accommodate any discontinuity of said capstan and said pinch roller relative to said shaft while transmitting true capstan speed without variation.
Claim 2
Dependent Claim
173 words
A drive for an adapter removably insertable in a tape recorder having a capstan and a pinch roller, said drive comprising: a. a driven element including a shaft rotatably supported on said adapter; b. a resilient elastomeric hub fixed to said shaft and extending radially outwardly from said shaft; c. a substantially rigid cylindrical sleeve secured to the periphery of said elastomeric hub and extending axially from said elastomeric hub; d. a layer Of friction material on the inside of said axial extent of said cylindrical sleeve; e. drive means turned by said driven element for operating said adapter; and f. said elastomeric hub and said cylindrical sleeve being configured so said sleeve is engaged by said pinch roller to press said friction material aganist a substantial length of said capstan with said sleeve providing uniform and unyielding control of the speed transfer from said capstan and said elastomeric hub flexing to accommodate any discontinuity of said capstan and said pinch roller relative to said shaft while transmitting true capstan speed without variation.
Claim 3
Dependent Claim
18 words
The drive of claim 1 wherein said drive means includes a belt and pulley dimensioned for speed reduction.
Claim 4
Dependent Claim
22 words
The drive of claim 1 wherein said drive means includes a rotatable element with a substantial mass to serve as a flywheel.
Claim 5
Dependent Claim
19 words
The drive of claim 1 wherein said friction material is formed of the same elastomeric material forming said hub.
Claim 6
Dependent Claim
18 words
The drive of claim 1 wherein said adapter is for linear play and has a linear drive slot.
Claim 7
Dependent Claim
37 words
the drive of claim 5 wherein said drive means includes a friction drive roller approximately tangent to said linear drive slot and means for pressing a linear recording element against said friction roller for traversing said slot.
Claim 8
Dependent Claim
27 words
The drive of claim 6 wherein said means for pressing said linear element against said friction roller is a magnetic head spring biased against said friction roller.
Claim 9
Dependent Claim
19 words
The drive of claim 7 wherein said friction material is formed of the same elastomeric material forming said hub.
Claim 10
Dependent Claim
31 words
The drive of claim 8 including a belt and pulley drive dimensioned so that the surface speed of said friction roller is substantially less than the surface speed of said capstan.
Claim 11
Dependent Claim
24 words
The drive of claim 9 wherein a pulley in said belt and pulley drive means has a substantial mass to serve as a flywheel.
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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |