US PATENT SUBCLASS 369 / 137
.~.~.~.~ By stress application to solid transducing element (e.g., piezoelectric)

Current as of: June, 1999
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369 /   HD   DYNAMIC INFORMATION STORAGE OR RETRIEVAL

99  DF  SPECIFIC DETAIL OF INFORMATION HANDLING PORTION OF SYSTEM {4}
127  DF  .~ Mechanical modification or sensing of storage medium {6}
135  DF  .~.~ Specified structure of electrical transducing assembly {11}
136  DF  .~.~.~ Multichannel (stereo cartridge) {2}
137.~.~.~.~ By stress application to solid transducing element (e.g., piezoelectric) {1}
138  DF  .~.~.~.~.~> With adjustable or replaceable stylus coupling structure

DEFINITION

Classification: 369/137

By stress application to solid transducing element (e.g., piezoelectric):

(under subclass 136) Subject matter wherein a stylus is coupled to a relatively static transducer element which responds to pressure or other force.

(1) Note. Typical transducer elements will be piezoelectric, electrostrictive, solid state pressure responsive devices, or the like. The term "relatively static" refers to the absence of translatory motion of the transducer element, as a whole.