| 摘要 |
<p>A control device, parts therefor and methods of making the same are provided, the control device (40) having a temperature sensing unit (44) comprising a rod (56) and tube means (51) utilizing a heat expandable and contractible polymeric member (83) disposed between one end (58) of the rod (56) and an abutment (54) of the tube (51) to tend to cause an outer end (57) of the rod (56) to move toward an actuator (42) of the control device (40) upon the unit (44) sensing decreasing temperature and to tend to cause that end (57) of the rod (56) to move away from the actuator (42) upon the unit (44) sensing increasing temperature, a biasing member (88) being operatively interconnected to the unit (44) to continuously place the tube (51) under compression between an open end (52) thereof and the abutment (54) thereof and to continuously place the rod (56) under tension between the opposite ends (57, 58) thereof to tend to reduce the temperature differential of the control device (40).</p> |
