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US4121834A Expired / Lapsed US ⏱️ 0.0 years remaining

Pick-up device for a phonograph tone arm

Assignee: Individual
•
Filing: 1977-11-09
•
Granted: 1978-10-24
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Expires: 1997-11-09
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Abstract

Abstract A device for automatically lifting a phonograph stylus from a record after the end of the sound groove has been played includes a pedestal base mounted on a support plate adjacent the turntable and provided with a cavity adapted to receive one end of a boom arm, the free end of which extends to a position over the record run-out groove. The vertical distance between the free end of the boom arm and the record can be adjusted by means of a setscrew. After the stylus has passed the end of the sound groove and entered the run-out groove, a small, thin metal disk located on the top surface of the stylus cartridge receiving shell is attracted to a magnet mounted on the lower surface of the free end of the boom arm and lifts the stylus off of the record.

Inventors

  • 👤 Ron B. Yestrebi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 16:48
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/02; G11B3/08; G11B3/085; G11B3/08535; G11B3/08564; G11B3/08567; G11B3/0857; G11B3/08574; G11B3/08577; G11B3/08583

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 146 words
A lifting apparatus for use with a phonograph having a tone arm provided with a stylus adapted to engage the sound groove in a record, said apparatus comprising: (a) a base member having a central cut-out portion including at least one key slot; (b) means for mounting said base member on said phonograph adjacent said record; (c) a boom arm having a member slidably mounted in said central cut-out portion so that one end of said arm extends inwardly of said phonograph to a position above the run-out groove of said record; (d) a magnet carried on said end of said arm; and (e) a magnetically attractive member mounted on said tone arm facing said magnet, said magnet exerting a force on said magnetically attractive member which lifts said tone arm after said stylus has moved past the end of the sound groove of said record.
Claim 2
Dependent Claim 146 words
A lifting apparatus for use with a phonograph having a tone arm provided with a stylus adapted to engage the sound groove in a record, said apparatus comprising: (a) a base member having a central cut-out portion including at least one key slot; (b) means for mounting said base member on said phonograph adjacent said record; (c) a boom arm having a member slidably mounted in said central cut-out portion so that one end of said arm extends inwardly of said phonograph to a position above the run-out groove of said record; (d) a magnet carried on said end of said arm; and (e) a magnetically attractive member mounted on said tone arm facing said magnet, said magnet exerting a force on said magnetically attractive member which lifts said tone arm after said stylus has moved past the end of the sound groove of said record.
Claim 3
Dependent Claim 22 words
The apparatus of claim 1 further including means for vertically adjusting the mounting position of said boom arm in said base member.
Claim 4
Dependent Claim 17 words
The apparatus of claim 1 wherein said magnetically attractive member is smaller in diameter than said magnet.

References Cited (Backward Citations)

US2869877A Cited
US3219351A Cited
US3503615A Cited
US4062548A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-10-23 1982-04-24 1982-10-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-10-23 1986-04-24 1986-10-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-10-23 1990-04-24 1990-10-24 $7700.00 Window Closed / Lapsed

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