US4328575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disc player having turntable height varying apparatus
Assignee: RCA Corp
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Filing: 1980-05-09
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Granted: 1982-05-04
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Expires: 2000-05-09
Abstract
Abstract In a record player, one end of a tubular shaft is attached to a turntable. A follower member is disposed within the tubular shaft near the free end thereof such that a portion of the follower member extends beyond the shaft for engagement with the base of the player. The follower member is captured in the tubular shaft, but is free to float up and down. Disposed inside the tubular shaft is a threaded cap on which the follower member rides. The threaded cap is provided with a hex socket which is accessible from the top of the turntable through a central opening therein. A hex wrench is inserted through the tubular shaft and the cap is turned to adjust the turntable height.
Inventors
- 👤 Charles A. Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:49
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/04; G11B17/041; G11B17/049; G11B17/022; G11B17/028; G11B17/032; G11B19/00; G11B19/20; G11B19/2009
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
208 words
In a player for recovering prerecorded information from a disc record by means of a pickup; said player including a turntable disposed thereon for centering and rotatably supporting a record for playback; said player further having a carriage for supporting said pickup; said carriage being mounted in said player at a given height for translation over and across a turntable-supported record; apparatus secured to said turntable for varying the height of said turntable with respect to the base of said player over an operating range comprising: (A) a tubular shaft having one end secured to said turntable such that said shaft is coaxially disposed with respect to said turntable; (B) a member disposed within said tubular shaft near the free end thereof, and subject to motion along a path disposed parallel to the axis of said turntable; said member having a portion protruding beyond said free end for engagement with said base of said player; and (C) means arranged within said tubular shaft on the side of said member away from said protruding portion thereof for varying the position of said member along said path; said turntable having a central opening in communication with the interior of said tubular shaft for providing access to said position varying means.
Claim 2
Dependent Claim
208 words
In a player for recovering prerecorded information from a disc record by means of a pickup; said player including a turntable disposed thereon for centering and rotatably supporting a record for playback; said player further having a carriage for supporting said pickup; said carriage being mounted in said player at a given height for translation over and across a turntable-supported record; apparatus secured to said turntable for varying the height of said turntable with respect to the base of said player over an operating range comprising: (A) a tubular shaft having one end secured to said turntable such that said shaft is coaxially disposed with respect to said turntable; (B) a member disposed within said tubular shaft near the free end thereof, and subject to motion along a path disposed parallel to the axis of said turntable; said member having a portion protruding beyond said free end for engagement with said base of said player; and (C) means arranged within said tubular shaft on the side of said member away from said protruding portion thereof for varying the position of said member along said path; said turntable having a central opening in communication with the interior of said tubular shaft for providing access to said position varying means.
Claim 3
Dependent Claim
44 words
The apparatus as defined in claim 1 wherein the interior surface of said tubular shaft has a threaded portion; wherein the position varying means comprises a cylindrical element having a threaded peripheral portion arranged for engagement with said threaded portion of said tubular shaft.
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) | 1985-05-03 | 1985-11-02 | 1986-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-03 | 1989-11-02 | 1990-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-03 | 1993-11-02 | 1994-05-04 | $7700.00 | Window Closed / Lapsed |