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US 2020/0381201 A1Published application
An improved switch
AssigneeIntrol IP Limited
InventorsAndrew Joseph PALMER, Samuel James LOGAN
Life of this patent
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Abstract
The present invention relates to a switch and has particular application in temperature regulation devices used in domestic and commercial electrical appliances such as stoves, ovens or the like. It includes an arrangement of a pair of arms that co-operate with a biasing means in combination with magnetic components provided on each of the arms. This arrangement does away with the need for the switch to use relatively expensive bi-metallic components and which may be prone to arcing and potential damage to or fusing of the contacts of the switch.
Claims25
1-47. (canceled)
A switch device that includes:
- a first magnetic member;
- a second magnetic member;
- a third magnetic member;
- and
- a heating device in thermal communication with one of the first and second magnetic members;
- wherein, in use, the heating device is configured to heat the first or second magnetic member to reduce the attraction force between said first and second magnetic members, and
- further wherein the third magnetic member is structured and/or arranged to at least partially offset any variations in attraction force between the first and second magnetic members due to ambient temperature changes in the switch.
4 more elements
Dependencies are inferred from the claim text.