Patent ID: 8576687
Filing Date: 2013-11-05
Classification: G11B

Abstract:
1. A tonearm system for the replay of LP's comprising a tonearm bearing assembly mounted on a record player wherein said tonearm bearing assembly comprises: (a) a tonearm mounting collar attached to a record player; (b) a base bearing subassembly which is vertically oriented and comprises a top and bottom end and attached to said tonearm mounting collar; (c) a swivel platform attached to said base bearing subassembly, wherein said swivel platform comprises a hole to receive a tonearm bearing housing which is vertically-oriented wherein said top end of said tonearm bearing housing comprises a plurality of upper swivel bearings and said bottom end of said base tonearm bearing housing comprises a plurality of bottom swivel bearings; (d) a tonearm shaft having a top end and a bottom end which is received by said upper and bottom plurality of swivel bearings; (e) a tonearm pivot housing having a top surface and bottom surface wherein said bottom surface is attached to said top end of said tonearm shaft and said tonearm pivot housing comprises a horizontally-oriented tonearm clearance hole containing a plurality of pivot bearings through which a tonearm is received; (f) a magnet platform which is attached at one end of said magnet platform to said bottom end of said tonearm shaft and a second end of said magnet platform comprising a magnet; wherein said base bearing assembly comprises a magnet guide platform wherein said magnet guide platform comprises a magnet guide which is attached to said magnet guide platform wherein said magnet guide is located above said magnet of said magnet platform such that a magnetic linkage is created between said magnet and said magnet guide to move said tonearm in rotation and translation, such that any tangential tracking error is reduced.