Liquid contact switch assembly incorporated within wrist watch casing

Claim 1

An electric switch device for wrist-watches equipped with electric or electronic members and having a case with a sidewall, comprising: an enclosure assembly having at least one component adapted to be secured in a said wrist-watch, said assembly defining an annular enclosed chamber of a predetermined volume, and an electrically conductive liquid confined within said enclosed chamber and having a volume less than said predetermined volume of said chamber, said assembly comprising two annular electrically insulating parts having complementary L-shaped profiles for forming said annular enclosed chamber when joined, at least one of said insulating parts having an annular shape enabling it to be secured in said sidewall, and said assembly further comprising two electrically conductive parts, said electrically conductive parts being structurally spaced from one another and each being exposed outside said enclosed annular chamber for connection to said electric or electronic members, and inside said enclosed chamber adapted to be selectively either electrically connected to one another via said liquid or left electrically separated from one another in response to movements of said liquid within said annular chamber depending upon various positions assumed by said assembly, at least one of said conductive parts comprising a portion made of electrically conductive material accommodated in one of said insulating parts and exposed within said annular chamber only at a predetermined location thereof where it is delimited by a curved surface, said switch device further comprising at least one baffle element disposed in said enclosed chamber in proximity to said predetermined location for preventing said liquid from coming in contact by simple inertia with said portion made of electrically conductive material when said assembly is subjected to jolts.