Patent US4332023A successfully refreshed from Google Patents.
US4332023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stationary record player
Assignee: Panasonic Holdings Corp
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Filing: 1980-04-03
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Granted: 1982-05-25
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Expires: 2000-04-03
Abstract
Abstract A stationary record player having a turn table and a pickup pivotally secured to the turn table, so as to trace, when rotated together with the turn table, the recording groove of a stationary record medium on which the record player as a whole is placed. The record player has various novel functions such as an automatic stopping function for automatically stopping the player when the play is finished with the record medium, an automatic returning function for automatically resetting the stylus to the starting position, a lift-stop function for automatically stopping the player when the latter is lifted up from the record medium a slide-stop function for automatically stopping the player when the latter is displaced laterally from the correct mounting position on the record medium, a pause state eliminating function for stopping the player when the latter in the pause state is lifted up from the record disc, and so forth. These functions are effective to prevent the unnecessary wear of the stylus and to protect the latter from any damaging external force. Further, the force required for turning the player into operation is derived from a motor for driving the turn table, so as to obtain an improved operability of the player. The playing performance of the player is further improved by an additional provision of an end repeat and optional repeat functions by means of which the playing is performed repeatingly over the full or a desired part of the record medium.
Inventors
- 👤 Yasushi Okamura
- 👤 Kiichiro Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:10
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/02; G11B3/10; G11B3/34; G11B3/40
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
201 words
A stationary record player having a turn table rotatively driven by a motor, and a pickup pivotally secured to said turn table so as to trace the track of a stationary record medium whereby a signal is produced in response to the relative motion between said track and pickup further comprising: (a) switch means for momentarily supplying an energizing current to said electric motor in response to a manual actuating force; (b) means for positioning said pickup from a rest position into playing contact with said track, said means including a lift plate means mounted for vertical movement, said lift plate means being movable in response to a driving torque, and a biasing means for biasing one end of said pivotally mounted pickup against said lift plate whereby movement of lift plate pivots said pickup; (c) clutch means operatively connected to said means for positioning and said turn table, said clutch means providing a momentary driving torque to said means for positioning in response to an initial rotation of said turn table; whereby said pickup is positioned in contact with said track; and (d) means for energizing said motor continuously when said pickup is placed in playing contact with said track.
Claim 2
Dependent Claim
201 words
A stationary record player having a turn table rotatively driven by a motor, and a pickup pivotally secured to said turn table so as to trace the track of a stationary record medium whereby a signal is produced in response to the relative motion between said track and pickup further comprising: (a) switch means for momentarily supplying an energizing current to said electric motor in response to a manual actuating force; (b) means for positioning said pickup from a rest position into playing contact with said track, said means including a lift plate means mounted for vertical movement, said lift plate means being movable in response to a driving torque, and a biasing means for biasing one end of said pivotally mounted pickup against said lift plate whereby movement of lift plate pivots said pickup; (c) clutch means operatively connected to said means for positioning and said turn table, said clutch means providing a momentary driving torque to said means for positioning in response to an initial rotation of said turn table; whereby said pickup is positioned in contact with said track; and (d) means for energizing said motor continuously when said pickup is placed in playing contact with said track.
Claim 3
Dependent Claim
111 words
A stationary record player according to claim 1, wherein said clutch means comprises a cam shaft rotating with said turn table; a floating cam member concentric with said cam shaft and movable along the axis of said cam shaft, said floating cam member having a claw for engaging a locking screw of said cam shaft, said floating cam member having a surface for imparting a linear motion to a member residing thereon in response to the rotation of said floating cam member; and a member coupling said surface to said means for positioning said pickup for moving said pickup into playing contact with the record track of the stationary record medium.
Claim 4
Dependent Claim
199 words
A stationary record player having a turn table driven by a motor, a pickup pivotally supported to said turn table so as to trace when rotated together with said turn table the recording groove of a stationary record medium so as to reproduce the signal recorded in said record medium, means for retracting said pickup to a rest position away from said record surface at the conclusion of the tracing of said track further comprising: (a) means for energizing said motor whereby said turn table is continuously rotated; (b) driving means for placing said pickup at the beginning point of said record medium track from the rest position in response to a momentary torque, said driving means including a lift plate means mounted for vertical movement and a biasing means for biasing said pickup against said lift plate, whereby vertical movement of said lift plate permits said pickup to pivot into communication with said recording grooves; and (c) clutch means coupling said driving means with said turn table, said clutch means providing a momentary torque to said driving means for placing said pickup at the beginning point of said record medium track when said motor receives an energizing current.
Claim 5
Dependent Claim
199 words
A stationary record player having a turn table driven by a motor, a pickup pivotally supported to said turn table so as to trace when rotated together with said turn table the recording groove of a stationary record medium so as to reproduce the signal recorded in said record medium, means for retracting said pickup to a rest position away from said record surface at the conclusion of the tracing of said track further comprising: (a) means for energizing said motor whereby said turn table is continuously rotated; (b) driving means for placing said pickup at the beginning point of said record medium track from the rest position in response to a momentary torque, said driving means including a lift plate means mounted for vertical movement and a biasing means for biasing said pickup against said lift plate, whereby vertical movement of said lift plate permits said pickup to pivot into communication with said recording grooves; and (c) clutch means coupling said driving means with said turn table, said clutch means providing a momentary torque to said driving means for placing said pickup at the beginning point of said record medium track when said motor receives an energizing current.
Claim 6
Dependent Claim
29 words
The stationary record player of claim 3, wherein said lift plate moves in a vertical direction pivoting said pickup in response to momentary torque produced by said turn table.
Claim 7
Dependent Claim
32 words
The apparatus of claim 4, further including means for returning said pickup to a rest position when said pickup is at a position intermediate the beginning and end points of said track.
Claim 8
Dependent Claim
66 words
The apparatus of claim 4, wherein said clutch means comprises a floating cam coupled through a rotating cam shaft to said turn table, said floating cam being momentarily engaged with said cam shaft during the initial rotation of said turn table, said floating cam having a surface for engaging said driving means whereby a linear motion is imparted to said driving means for positioning said pickup.
Claim 9
Dependent Claim
36 words
A stationary record player as set forth in claim 3, characterized in that a noise-eliminating switch disposed in the transmission path of the reproduced signal is actuated when said pickup are reset to said inoperative position.
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) | 1985-05-24 | 1985-11-23 | 1986-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-24 | 1989-11-23 | 1990-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-24 | 1993-11-23 | 1994-05-25 | $7700.00 | Window Closed / Lapsed |