Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyoto Ceramic Co Ltd
Kyocera Corp
Nagaoka KK
Original Assignee
Kyoto Ceramic Co Ltd
Kyocera Corp
Nagaoka KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kyoto Ceramic Co Ltd, Kyocera Corp, Nagaoka KKfiledCriticalKyoto Ceramic Co Ltd
Priority to JP9802678ApriorityCriticalpatent/JPS5525841A/en
Publication of JPS5525841ApublicationCriticalpatent/JPS5525841A/en
PURPOSE: To secure the porper Young's modulus and the hardness for the ceramic material which is one of the elements for the vibration system of the record player as well as to prevent occurrence of the resonance by using the poly-crystal sintered material wich is composed mainly of the alumina with the specified Young's modulus.
CONSTITUTION: For the vibration system of the record player in which cartridge 1, head shell 2, tone arm 3, weight balancer 4 and others are integrated, the ceramics composed of the poly-crystal sintered material of the minute alumina crystal featuring the average grain size of under 10μm and with the Young's modulus between 1.4W2.8×106kg/cm2 is used to form head shell 1.
COPYRIGHT: (C)1980,JPO&Japio
JP9802678A1978-08-101978-08-10Head shell for attachment of pickup cartridge
PendingJPS5525841A
(en)