US4189155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Record player
Assignee: Individual
•
Filing: 1978-08-07
•
Granted: 1980-02-19
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Expires: 1998-08-07
Abstract
Abstract A record player suitable for a toy and comprising a container, a cover therefor, a turntable rotatably mounted on said cover, an electric motor in said container for driving the turntable, a speaker in said container, first spring means pivotably biasing the speaker towards the turntable, a tone arm having a stylus, second spring means biasing the tone arm away from the turntable and radially outwardly thereof, said tone arm being movable with said speaker towards the turntable against the bias of said second spring means for engaging a record on the turntable, switch means operable by said tone arm as the tone arm moves towards the center of the turntable to break a circuit supplying driving current to the motor, operating means for pivoting the speaker away from the turntable against the bias of the first spring means so as to allow the second spring means to move the tone arm away from and radially outwardly of the turntable.
Inventors
- 👤 Mun-Hay Ngai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:11
CPC Classifications
A; A63; A63H; A63H33/00; A63H33/30; A63H33/3027
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
172 words
A record player suitable for a toy and comprising: a container; a cover therefore; a rotably mounted turntable; an electric motor including a driving spindle for driving the turntable; a speaker in said container; a tone arm having a stylus; said tone arm being movable with said speaker toward the turntable and including means for causing said stylus to engage a record on the turntable; a circuit supplying driving current to the motor, including switch means operable by said tone arm as the tone arm moves toward the center of the turntable to interrupt the driving current; means for pivotly mounting the motor in the container; a metal spring wire mounted so as to bias said driving spindle into driving contact with the periphery of the turntable; and an adjustment spindle rotatably mounted in said container and having a notch engaged by said metal wire so that rotation of said adjustment spindle alters the bias of the drive spindle against the periphery of the turntable to alter the speed of the turntable.
Claim 2
Dependent Claim
172 words
A record player suitable for a toy and comprising: a container; a cover therefore; a rotably mounted turntable; an electric motor including a driving spindle for driving the turntable; a speaker in said container; a tone arm having a stylus; said tone arm being movable with said speaker toward the turntable and including means for causing said stylus to engage a record on the turntable; a circuit supplying driving current to the motor, including switch means operable by said tone arm as the tone arm moves toward the center of the turntable to interrupt the driving current; means for pivotly mounting the motor in the container; a metal spring wire mounted so as to bias said driving spindle into driving contact with the periphery of the turntable; and an adjustment spindle rotatably mounted in said container and having a notch engaged by said metal wire so that rotation of said adjustment spindle alters the bias of the drive spindle against the periphery of the turntable to alter the speed of the turntable.
Claim 3
Dependent Claim
96 words
A record player according to claim 1, wherein said switch means comprises a fixed metal contact arranged in said circuit of the motor, a lever having a first lever arm and a second lever arm shorter than said first lever arm and being pivotable by the tone arm on contact of the tone arm with said first lever arm as the tone arm approaches the centre of the turntable, so as to cause the second lever arm to move said movable metal contact away from said fixed metal contact and break said circuit to the motor.
Claim 4
Dependent Claim
103 words
A record player as claimed in claim 2, wherein the record player further comprises at least one record having a playing track terminating in a continuous depression which is deeper than the playing track, a bank at the radially outer edge of the depression being downwardly inclined towards the spindle such that, in use, when the stylus reaches said depression it slidably moves down the inclined bank, during which movement the tone arm pivots said first lever arm to cause the second lever arm to move the movable metal contact away from the fixed metal contact and break the circuit of the motor.
Claim 5
Dependent Claim
46 words
A record player as claimed in claim 3, wherein the depression comprises a continuous groove having a radially outer bank and a radially inner bank, the outer bank being downwardly inclined towards the spindle and the inner bank being normal to the plane of the record.
Claim 6
Dependent Claim
20 words
A record player as claimed in claim 1, wherein the wire engages a continuous cam surface of the adjustment spindle.
Claim 7
Dependent Claim
44 words
A record player as claimed in claim 5, wherein the cam is mounted for angular movement about an axis, the cam surface being circular when viewed in an axial direction and the axis being eccentric with respect to the centre of the cam surface.
Claim 8
Dependent Claim
27 words
A record player as claimed in claim 5, wherein the cam is mounted for angular movement about an axis normal to the longitudinal axis of the wire.
Claim 9
Dependent Claim
61 words
A record player according to claim 1, further comprising a pivotable speaker frame having a lug against which a first spring means acts and an arm, the apex of the speaker being connected to said arm, so that said arm moves the tone arm towards the turntable on pivoting of said speaker frame by said first spring means towards the turntable.
Claim 10
Dependent Claim
31 words
A record player according to claim 8, wherein the speaker comprises a diaphragm tapering outwardly from the speaker apex to a periphery, a ring connecting said periphery to the speaker frame.
Claim 11
Dependent Claim
22 words
A record player according to claim 1, wherein said cover is detachably mounted on said container for changing or turning a record.
Claim 12
Dependent Claim
58 words
A record player according to claim 1, further comprising means for breaking the electric circuit to the motor on detachment of the cover, said means comprising two metal members biased away from each other to break the circuit, a projection on said cover holding the metal members in contact when the cover is in place on the container.
Claim 13
Dependent Claim
38 words
A record player according to claims 1, 5, 6, or 7 further comprising a resilient ring mounted in a groove in the periphery of the turntable and located such that the driving spindle bears against said resilient ring.
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) | 1983-02-18 | 1983-08-20 | 1984-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-18 | 1987-08-20 | 1988-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-18 | 1991-08-20 | 1992-02-19 | $7700.00 | Window Closed / Lapsed |