| 摘要 |
<p>1,107,852. Thermal switches. FLYGTS PUMPAR A.B. 15 June, 1965 [15 June, 1964], No. 25292/65. Heading H1N. [Also in Division G1] In a device for indicating or controlling the level of liquid in a container a sensory element, comprises a easing surrounding a bimetallic element 3 and a heater 5, is placed in a liquid container so that should the casing be surrounded by liquid or by a gas the element 3 will be deflected into or out of engagement with a contact 4 to make or break a circuit to an indicator or a control device such as a pump. In alternative embodiments the element 3 is held by its end and bowed from a contact engaging to a contact dis-engaging position and two heater resistances are utilized.</p> |
