Tone arm lift mechanism
AssigneeMarvin Glass & Associates
InventorsDonald K. Fletchic, Howard J. Morrison, Ralph H. Baer
Life of this patent
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AssigneeMarvin Glass & Associates
InventorsDonald K. Fletchic, Howard J. Morrison, Ralph H. Baer
Estimating the term…
A tone arm lift mechanism for a programmable phonograph device includes a selectively actuatable solenoid mounted on the free end of the tone arm. The coil of the solenoid includes a movable armature and is mounted on the tone arm in a position so that the armature moves in a generally vertical direction, perpendicular to the surface of a record on the phonograph device. A resilient pad is provided on the lower end of the solenoid armature for engagement with the top surface of the record. A selectively actuatable control energizes the solenoid coil and moves the armature downwardly with respect to the coil, so that, as the resilient pad engages the record surface, the tone arm is moved upwardly so that the stylus moves out of engagement with the record grooves for transverse movement of the tone arm and stylus with respect to the record. In one embodiment, the armature includes a portion of permanently magnetized material which provides a controlled, linear response of the armature after enegization of the coil. A further embodiment provides a biasing leaf spring secured to the tone arm at one end and extending beneath the end of the solenoid armature. A resilient pad is mounted to the opposite side of the leaf spring so that the armature flexes the leaf spring downwardly moving the resilient pad into engagement with the record surface and lifting the tone arm off of the record.
A tone arm lift mechanism for a phonograph device having a turntable for supporting a record and a tone arm mounted for movement of one end over the record surface, comprising:
In a phonograph device having a turntable and a movably mounted tone arm, a tone arm lift mechanism, comprising:
A tone arm lift mechanism for a phonograph device, comprising:
A tone arm lift mechanism for a phonograph device, comprising:
A tone arm lift mechanism for a phonograph device, comprising:
In a phonograph device, a tone arm lift mechanism, comprising:
Dependencies are inferred from the claim text.