Thermostat
First Claim
1. A thermostat comprising:
- a housing;
a heat sensitive body made of ferromagnetic material connected to said housing, said body losing magnetic attraction with a change in temperature;
magnet means having a magnet movably mounted to said housing from an attracted position toward said body to a spaced position away from said body, said magnet means including an outwardly extending lever element;
a fixed contact connected to said housing;
a movable contact mounted to said housing having a contact portion movable from a first position in contact with said fixed contact to a second position spaced from said fixed contact; and
biasing means connected between said movable contact and said lever element for biasing said magnet means into its spaced position and simultaneously biasing said movable contact into its second position, said biasing means connected for moving said movable contact into its second position with said magnet means in its spaced position, and for moving said movable contact into its first position with said magnet means in its attracted position.
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Accused Products
Abstract
Thermostat comprises a heat sensitive body of ferromagnetic material and a movable magnet cooperating therewith. A pair of a contacts which are closed or open depending upon the position of the magnet are provided where the position in turn depends upon the temperature dependant magnetic properties of the sensitive body. The magnet is exposed to a counter force, that is oppositely directed to the attraction force, and a spring force on a pair of contacts has a contact making action in one position of the magnet and a contact opening action in another position of the magnet. More particularly the counter force and the spring force are exerted by one and the same snap spring, that acts between the movable contact formed as a contact tongue and the magnet.
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Citations
9 Claims
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1. A thermostat comprising:
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a housing; a heat sensitive body made of ferromagnetic material connected to said housing, said body losing magnetic attraction with a change in temperature; magnet means having a magnet movably mounted to said housing from an attracted position toward said body to a spaced position away from said body, said magnet means including an outwardly extending lever element; a fixed contact connected to said housing; a movable contact mounted to said housing having a contact portion movable from a first position in contact with said fixed contact to a second position spaced from said fixed contact; and biasing means connected between said movable contact and said lever element for biasing said magnet means into its spaced position and simultaneously biasing said movable contact into its second position, said biasing means connected for moving said movable contact into its second position with said magnet means in its spaced position, and for moving said movable contact into its first position with said magnet means in its attracted position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification