Dynamic information storage or retrieval – Dynamic mechanism subsystem – Specific detail of storage medium support or motion production
Reexamination Certificate
2006-09-12
2006-09-12
Miller, Brian E. (Department: 2627)
Dynamic information storage or retrieval
Dynamic mechanism subsystem
Specific detail of storage medium support or motion production
Reexamination Certificate
active
07106685
ABSTRACT:
A turntable that has a platter that can be vertically positioned so that the VTA between the stylus of the cartridge and the record can be easily adjusted without tweaking or touching the tone arm. The turntable includes a base, a platter, a spindle assembly configured to position the platter above the base, and a spindle adjustment mechanism configured to selectively position the vertical position of the platter with respect to the base. In one embodiment, the spindle adjustment mechanism includes a drive shaft that is configured to engage the spindle assembly and to selectively drive the spindle assembly up or down. As the spindle assembly is moved up and down, the platter moves up and down with respect to the base. In another embodiment, the spindle assembly includes a spindle shaft configured to rotate inside a chamber of the spindle assembly. A bolt which attached to the spindle shaft is configured to move up and down when the spindle shaft is rotated. The platter, which supported by a ball bearing resting on the bolt, moves up and down with the bolt as the spindle shaft is rotated. With either embodiment, a remote control unit or a mechanical crank can be used to move the platter up or down with respect to base to adjust the VTA without touching or tweaking the tone arm.
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Chasin, “A Beginner's Guide to Cartridge Setup”, www. audiophilia.com/features/cartridge—setup.htm Sep. 1999.
Calaio Salvatore J.
Miller Brian E.
LandOfFree
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