Patent ID: 7458356
Filing Date: 2008-12-02
Classification: F01L,F16F,Y10T

Abstract:
1. A spring apparatus comprising: a first member having an axis; a second member which reciprocates in a direction of the axis with respect to the first member; a bellows unit which is located between the first member and the second member, and which is configured to extend and contract in the direction of the axis, and which has a sealed space therein; a gas which is sealed in a compressed state in the sealed space of the bellows unit, and which serves to extend the bellows unit in the direction of the axis; a heat exchange liquid which is contained in the sealed space of the bellows unit, and which serves to exchange heat with the gas; and a heat exchange promoting member which has a higher thermal conductivity than the liquid, and which is located between the gas and the liquid.