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US 8,008,588 B2Granted
Contact switch
AssigneePanasonic Corporation
InventorsSatoshi Kaida, Takao Matsui, Hirotaka Nawate
Life of this patent
Estimating the term…
Abstract
A contact switch includes a case, a first contact provided in the case, a second contact provided in the case, an actuator for causing the first contact to contact the second contact, and an oil-repellent agent applied to at least one of an outer edge of the first contact or an outer edge of the second contact The oil-repellent agent includes a fluorine-based polymer. The switch has a simple structure and connects between the contacts reliably.
Claims12
A contact switch adapted to be used in an environment where a lubricant oil exists, said contact switch, comprising:
- a case to allow the lubricant oil to exist therein;
- a first strip provided in the case, the first strip allowing the lubricant oil to flow along the first strip;
- a first contact provided on the first strip and in the case;
- a second contact provided in the case;
- an actuator for causing the first contact to contact the second contact;
- and
- a first oil-repellent agent applied to an outer edge of the first contact, the first oil-repellent agent including a fluorine-based polymer;
- wherein the first oil-repellent agent surrounds the first contact entirely to prevent the lubricant oil flowing along the first strip from reaching the first contact.
5 more elements
Dependencies are inferred from the claim text.