Abstract: The construction of a vibration damping device includes a splined or generally spiral groove formed either in the outer periphery of a damper pin, which is inserted into a damper, or in the inner periphery of a hole formed in the damper for inserting the damper pin therein.

Abstract: Deck bases of conventional disk memory reproduction devices are fastened at four points by side lock pins protruding from the front and rear of the deck base and the side lock plates located opposite the side lock pins. This invention reduces the parts count and makes the deck base more compact by fixing the deck base at three points using side lock pins and side lock plates placed opposite them.

Abstract: In conventional disk shaped recording reproduction devices, vibrations have been absorbed by the up and down motion of protruding rods which are supported in a viscous liquid such as a silicon oil. According to this invention, an inexpensive elastic body is used, which is heated by a heater so that, by maintaining the temperature of the elastic body within a certain range, the deterioration of the vibration absorbing characteristics of the elastic body with temperature changes is considerably reduced and the elastic body can be made more compact.