Patent US2321874A successfully refreshed from Google Patents.
US3934883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disk record player
Assignee: Individual
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Filing: 1974-01-10
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Granted: 1976-01-27
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Expires: 1994-01-10
Abstract
Abstract A disk record player having no turntable or spindle and driveable from a conventional magnetic tape player. The record disk is held in position and rotated by circumferentially engaged rollers, each roller having a circumferential groove. The unit can be utilized in a small space and in a mobile environment such as an automobile, and is unaffected by sudden movements, bumps or jolts.
Inventors
- 👤 Robert L. Chambers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:08
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
142 words
A disc record support and drive device comprising: a housing; at least three rollers coupled to said housing and disposed in a common plane an equal radial distance from a predetermined point within said housing to the edge of said rollers, one of said rollers being pivotally moveable relative to said housing and said predetermined point; means connected to one of said rollers and said housing for rotating said roller; a phonograph cartridge; cartridge support means coupled to said housing and said cartridge, said cartridge radially moveable along said cartridge support means; and linkage means connecting said pivotally mounted roller and said cartridge for lifting said cartridge whenever said roller is pivoted, whereby a disc record inserted in the plane of said rollers to engage said rollers will move said pivotal roller lifting the cartridge mechanism above the surface of the record.
Claim 2
Dependent Claim
142 words
A disc record support and drive device comprising: a housing; at least three rollers coupled to said housing and disposed in a common plane an equal radial distance from a predetermined point within said housing to the edge of said rollers, one of said rollers being pivotally moveable relative to said housing and said predetermined point; means connected to one of said rollers and said housing for rotating said roller; a phonograph cartridge; cartridge support means coupled to said housing and said cartridge, said cartridge radially moveable along said cartridge support means; and linkage means connecting said pivotally mounted roller and said cartridge for lifting said cartridge whenever said roller is pivoted, whereby a disc record inserted in the plane of said rollers to engage said rollers will move said pivotal roller lifting the cartridge mechanism above the surface of the record.
Claim 3
Dependent Claim
128 words
A disc record support and drive mechanism connectable to a tape recorder system having a drive unit including: at least three rollers coupled to said housing and disposed in a common plane an equal radial distance from a predetermined point within said housing to the edge of said rollers, one of said rollers being pivotally moveable relative to said housing and said predetermined point; means connected to one of said rollers and said housing for rotating said roller; a pair of mounting brackets attached to the outside surface of said housing for mounting said housing to a tape recorder housing; and a drive adapter connected to one of said rollers, said drive adapter projecting through said housing and engageable with the drive unit in said tape recorder system.
Claim 4
Dependent Claim
128 words
A disc record support and drive mechanism connectable to a tape recorder system having a drive unit including: at least three rollers coupled to said housing and disposed in a common plane an equal radial distance from a predetermined point within said housing to the edge of said rollers, one of said rollers being pivotally moveable relative to said housing and said predetermined point; means connected to one of said rollers and said housing for rotating said roller; a pair of mounting brackets attached to the outside surface of said housing for mounting said housing to a tape recorder housing; and a drive adapter connected to one of said rollers, said drive adapter projecting through said housing and engageable with the drive unit in said tape recorder system.
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) | 1979-01-26 | 1979-07-28 | 1980-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-26 | 1983-07-28 | 1984-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-26 | 1987-07-28 | 1988-01-27 | $7700.00 | Window Closed / Lapsed |