Wristwatch with a time display control switch means

Claim 1

An electronic watch comprising an illuminatable time display unit, control means for controlling the energization of said display unit including a switching unit, said switching unit comprising a hollow housing of non-electrically conductive material having a main large chamber and two opposed secondary smaller chambers, electrical switch means disposed in each of said secondary smaller chambers, each of said switch means being comprised of two spaced apart electrically conductive elements and a free-floating electrically conductive ball having a diameter sufficient to contact both of said electrically conductive elements in a chamber when said ball is disposed in said chamber and having dimensions slightly less than the dimensions of the secondary small chambers whereby a controlled movement of the watch wearer's wrist is required for sequentially moving the ball from contact with the conductive elements in one of the secondary smaller chambers to the conductive elements in the other of said secondary smaller chambers in a predetermined time.