Dynamic information storage or retrieval – Specific detail of information handling portion of system – Mechanical modification or sensing of storage medium
Patent
1980-04-01
1982-04-20
Cardillo, Jr., Raymond F.
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Mechanical modification or sensing of storage medium
369139, H04R 1708
Patent
active
043262856
ABSTRACT:
In order to improve the performance of a stereo phonograph cartridge which includes a base, first and second piezoelectric transducers, first and second individual elastomeric blocks mounting the first and second transducers to the base depending downwardly in a cantilevered manner in horizontal spaced relationship, first and second separate elastomeric stabilizers mounted to the base in horizontal spaced relationship with each other and directly below the first and second transducers, a resolver having four connecting points contacting respectively to the first and second transducers and the first and second stabilizers, a pivot anchor coupling the resolver in a tensioned manner to the base, the pivot anchor being attached to the resolver at a point which is equidistant from each of the four connecting points, and a stylus bar extending from the resolver along the axis of the pivot anchor, the stylus diameter is reduced to thereby reduce stylus mass, the size of the resolver and stabilizers is reduced to permit reducing the vertical tracking angle between the stylus and the record surface, and the elastomeric stiffness of the stabilizers and transducer mounting is reduced and, to compensate for the rise and fall in cartridge output and the imbalance between vertical and lateral output caused by these measures, an elastomeric coupler is inserted between each transducer and its associated coupling point, a dynamic resonant damper is attached to the side of the transducer opposite each coupling point and a dynamic balancing weight inserted in the resolver.
REFERENCES:
patent: 2707755 (1955-05-01), Hardie et al.
patent: 2881336 (1959-04-01), Elion
patent: 3055989 (1962-09-01), Bachman et al.
patent: 3946149 (1976-03-01), White
patent: 3952171 (1976-04-01), Dieter, Jr.
patent: 3975025 (1976-08-01), Obata et al.
patent: 3976830 (1976-08-01), Glenn
patent: 4053721 (1977-10-01), Nishikawa
Dieter, Jr. Norman H.
Peterhoff Edward
Cardillo, Jr. Raymond F.
Micro-Acoustics Corporation
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