| 摘要 |
<p>The invention relates to a temperature responsive actuating device using the volumetric expansion of a substance (2) with high coefficient of expansion to expel a piston (10) from a cylinder (1), wherein this substance is located in the cylinder (1) between end plugs (3,4) and the piston (10) passes through one of the end plugs (4) by means of a shaft seal (12). The invention is characterised in that the piston (10) bears axialiy with its outboard end upon an inboard end of a push rod (25) which can be moved separately from and independently of the piston (10) and which is guided for axial sliding movements, generally in line with the axis of movements performed by the piston (10), this push rod (25) being connected and arranged to transmit control forces between the piston (10) and a high leverage operating linkage operatively interconnecting the piston (10) with a second load element, the cylinder (1) being connected to a first load element.</p> |
