Dynamically adjustable azimuth control for a phonograph tonearm
OwnerGregory R. Viggianoinventor
Life of this patent
Estimating the term…
Abstract
A phonographic tonearm apparatus including a single filament mechanism for dynamically adjusting the azimuth of the cartridge stylus in real-time during playback of vinyl phonographic records while keeping the tonearm's pivot point in a fixed frictionless position. The tonearm's fixed pivot point provides a rigid and stable position for improved vertical and horizontal tracking performance while allowing for dynamic azimuth adjustment to optimize maximum signal separation of stereo audio channels. The azimuth control apparatus and mechanism also incorporates an integral anti-skate control mechanism that provides dynamic adjustment in real-time during playback of vinyl phonographic records.
Claims13
A device comprising:
- an upper tonearm tube,
- a lower tonearm tube,
- a connecting rod,
- a headshell,
- a headshell finger lift,
- a counterweight tube, and
- a counterweight;
- wherein said headshell is mounted on and removably connected to an end of said upper tonearm tube, said upper tonearm tube extending from said lower tonearm tube and said connecting rod;
- wherein said headshell contains a phonograph cartridge, a cantilever, and a stylus;
- wherein said counterweight is adjustably attached to said counterweight tube and sets the vertical tracking force of said stylus in a record groove of a vinyl phonograph record;
- wherein said stylus further comprises a stylus tip, said stylus tip further comprising a contact point, and wherein said contact point of said stylus tip contacts a record groove on the same horizontal plane as a tip of a unipivot pin member in a cone-shaped seating recess on said connecting rod;
- wherein said upper tonearm tube is mechanically connected to said lower tonearm tube, said lower tonearm tube is mechanically connected to said connecting rod, and said connecting rod is mechanically connected to said counterweight tube;
- and a
- a single filament, wherein said single filament is wound around an upwardly positioned horizontal winding shaft and housing, and said housing is pushed upward by means of a lower positioned internal spring;
- wherein each end of said single filament is attached to the outer sides of a right and a left lower transverse crossbar;
- wherein the right and left transverse crossbars are rigidly and perpendicularly connected to said tonearm at a single, rigid pivot point allowing for complete vertical and horizontal freedom of travel.
A dynamically adjustable azimuth control mechanism for accurate adjustment of a tonearm setting for a cartridge stylus, wherein azimuth is a perpendicular position of said cartridge stylus to a vinyl phonograph record groove, said mechanism comprising:
- a phonograph tonearm apparatus, said tonearm apparatus comprising a single filament mechanism, a pivot pin supporting a tonearm assembly, and a pivot point;
- said single filament mechanism including a single filament that is wound around an upwardly positioned horizontal winding shaft and has opposite ends respectively connected to rigid crossbars extending from a tonearm;
- wherein said single filament mechanism dynamically adjusts the azimuth of the cartridge stylus in real-time during playback of a vinyl record while keeping the pivot point in a fixed frictionless position.
Dependencies are inferred from the claim text.