Temperature sensitive switch
AssigneeINTER CONTROL, Herman Kohler Elektrik GmbH & Co KG
InventorWalter Hollweck
Life of this patent
Estimating the term…
Abstract
A temperature sensitive switch has openable and closable electric contacts, a two-position bimetallic element and a two-position bistable element, both coupled to the contacts. At a predetermined maximum temperature, the bimetallic element moves from a first position to a second position and thereby opens the contacts and also moves the bistable element from a first position into a second position. The bistable element, in its second position, maintains the contacts open independently from the position of the bimetallic element, until the bistable element is reset from its second position to its first position, and thus the contacts are closed, by an external (manual) resetting force.
Claims10
In a temperature sensitive switch including a movably supported electric contact having a closed and an open position, a temperature sensitive element coupled to the movable contact and being arranged for displacement from a first position to a second position at a predetermined maximum temperature;
- the temperature sensitive element being further arranged to move the movable contact from the closed position into the open position upon motion of the temperature sensitive element from the first position into the second position;
- the improvement comprising
- a. a bistable element having first and second positions and being coupled to said temperature sensitive element and said movable contact;
- said bistable element being arranged for movement from is first position into its second position by said temperature sensitive element when said temperature sensitive element moves from its first position into its second position;
- said bistable element being arranged for maintaining, in its second position, said movable contact in said open position independently from the position of said temperature sensitive element;
- and
- b. resetting means for simultaneously moving said bistable element from its second position into its first position and said movable contact from said open position to said closed position independently from the position of said temperature sensitive element.
Dependencies are inferred from the claim text.