Patent US4416003A successfully refreshed from Google Patents.
US4416003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Both side record player
Assignee: Sharp Corp
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Filing: 1981-08-10
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Granted: 1983-11-15
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Expires: 2001-08-10
Abstract
Abstract There is disclosed a record player of the vertical linear tracking type. The player includes first and second cartridges, respectively, for reproduction of front and back sides of a disc record means for driving commonly the first and second cartridges toward the center of said disc record. Both sides of the disc record are reproduced while the disc record is loaded and held in a record reproduction assembly.
Inventors
- 👤 Hiroyuki Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:50
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/20; G11B17/00; G11B17/02; G11B17/022; G11B17/028; G11B17/032; G11B17/04; G11B17/05; G11B17/053; G11B17/054; G11B17/08; G11B17/12; G11B17/14; G11B21/00; G11B21/02; G11B3/00; G11B3/02; G11B3/08; G11B3/095; G11B3/0952; G11B3/0955; G11B3/10; G11B3/34; G11B3/36; G11B3/38
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
234 words
A record player for selectively playing either side of a disc record comprising: a player body; a turntable including a turntable shaft being operatively mounted in a vertical direction within said player body; a first vertical linear tracking type record reproduction assembly operatively mounted in said player body; a record mount for initially receiving a disc record being pivotally mounted to said player body for rotating said disc record into engagement with said turntable shaft; a lid pivotally mounted to said player body; a second vertical linear tracking type record reproduction assembly operatively mounted in said lid; common drive means for selectively imparting linear motion to said first and second vertical linear tracking type record reproduction assemblies from a preselected point on said record disc to a central point on said record disc; and plunger means for selectively imparting motion to either said first vertical linear tracking type record reproduction assembly or said second vertical linear tracking type record reproduction assembly from a non-engaging position to a position in engagement with said disc record; wherein rotation of said lid to a closed position relative to said player body rotates said record mount to engage said disc record with said turntable shaft and disengage said record mount from said disc record thereafter said plunger means and said common drive means may be actuated to selectively play a recording from either side of said disc record.
Claim 2
Dependent Claim
234 words
A record player for selectively playing either side of a disc record comprising: a player body; a turntable including a turntable shaft being operatively mounted in a vertical direction within said player body; a first vertical linear tracking type record reproduction assembly operatively mounted in said player body; a record mount for initially receiving a disc record being pivotally mounted to said player body for rotating said disc record into engagement with said turntable shaft; a lid pivotally mounted to said player body; a second vertical linear tracking type record reproduction assembly operatively mounted in said lid; common drive means for selectively imparting linear motion to said first and second vertical linear tracking type record reproduction assemblies from a preselected point on said record disc to a central point on said record disc; and plunger means for selectively imparting motion to either said first vertical linear tracking type record reproduction assembly or said second vertical linear tracking type record reproduction assembly from a non-engaging position to a position in engagement with said disc record; wherein rotation of said lid to a closed position relative to said player body rotates said record mount to engage said disc record with said turntable shaft and disengage said record mount from said disc record thereafter said plunger means and said common drive means may be actuated to selectively play a recording from either side of said disc record.
Claim 3
Dependent Claim
61 words
A record player according to claim 1, wherein said first linear tracking type record reproduction assembly includes a rail sliding portion slidable mounted on a guide rail, an arm holder is pivotally mounted relative to said rail sliding portion, a cartridge is operatively connected to said arm holder and selectively displaced for engagement with a first surface of said disc record.
Claim 4
Dependent Claim
61 words
A record player according to claim 1, wherein said second linear tracking type record reproduction assembly includes a rail sliding portion slidable mounted on a guide rail, an arm holder is pivotally mounted relative to said rail sliding portion, a cartridge is operatively connected to said arm holder and selectively displaced for engagment with a second surface of said disc record.
Claim 5
Dependent Claim
36 words
A record player according to claim 1, wherein as said lid is closed relative to said player base said record mount is rotated in a clockwise direction as said lid is rotated in a counterclockwise direction.
Claim 6
Dependent Claim
35 words
A record player according to claim 1, and further including a record pressing member operatively connected to said lid for pressing said disc record against said turntable when said lid is in the closed position.
Claim 7
Dependent Claim
57 words
A record player according to claim 1, and further including a slide guide and guide pins operatively positioned relative to said record mount for initially positioning a record disc relative thereto when said lid is in an open position and subsequently being disengaged from said record disc when said lid is closed relative to said player base.
Claim 8
Dependent Claim
44 words
A record player according to claim 1, wherein said common drive means includes a reversible motor operatively connected by a series of pulley and ropes to said first and second vertical linear tracking type record reproduction assemblies for selectively imparting simultaneous linear motion thereto.
Claim 9
Dependent Claim
72 words
A record player according to claim 1, wherein said plunger means includes a first plunger operatively connected to said first vertical linear tracking type record reproduction assembly and a second plunger operatively connected to said second vertical linear tracking type record reproduction assembly, said first and second plungers being individually, selectively actuated for engaging and disengaging said first and second vertical linear tracking type record reproduction assemblies relative to said disc record.
Claim 10
Dependent Claim
62 words
A record player according to claim 2, and further including a photo-coupler operatively positioned relative to said rail sliding portion, said photo-coupler generating a signal to actuate said common drive means to rotate in a first direction after said plunger means is actuated to engage said first vertical linear tracking type record reproduction assembly with a first side of said disc record.
Claim 11
Dependent Claim
62 words
A record player according to claim 3, and further including a photo-coupler operatively positioned relative to said rail sliding portion, said photo-coupler generating a signal to actuate said common drive means to rotate in a first direction after said plunger means is actuated to engage said second vertical linear tracking type record reproduction assembly with a second side of said disc record.
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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) | 1986-11-14 | 1987-05-16 | 1987-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-14 | 1991-05-16 | 1991-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-14 | 1995-05-16 | 1995-11-15 | $7700.00 | Window Closed / Lapsed |