Timex Corporation

Frank P Mascia

Paul Wuthrich

A lever actuated by a manual pushbutton for advancing the date ring of a calendar watch so as to correct for months having less than 31 days. A special date change lever incorporates a tab actuated by the pushbutton, a first integral spring portion for biasing the lever to a normal rest position, a second integral spring portion for biasing an arm with a tab against the teeth of the date ring for advancing the date ring.

Manual date advance mechanism for a watch

A dual function pusher and rotate switch assembly for actuating, for example, a display light and/or time correction which includes a crown portion on the outside of the watch case and a shaft portion extending through the wall of the case. The shaft portion includes an intermediate section on the inside of the case which cooperates with a spring to provide a two position rotary detent action. In addition to permitting detent holding of the stem in the proper contact position, the spring arrangement also enables biased axial movement of the stem. The internal end of the shaft includes an eccentric tab which contacts a precisely positioned first switch blade when the stem being in a first detent position is pushed-in or contacts a second switch blade if the crown is rotated to a second detent position. If the crown is pushed-in while in the second detent position, both switch blades are engaged causing actuation of two functions such as causing simultaneous illumination and updating of the display.

Dual function pusher and rotate switch for solid state digital watches

The pusher and switch device is employed in electronic watches for actuating, for example, a display light. The pusher includes a crown portion, a stem portion extending through the wall of the case and having an intermediate section on the inside of the case which cooperates with a single stamped spring to provide axial movement of the stem. In addition to permitting axial movement of the stem, the spring arrangement also provides electrical contact to ground the stem to the case. A sealing element or gasket is held in an annular groove formed in the stem which contacts the internal surface of the case to provide for water resistant construction.

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Bristol, CT, United States of America

Frank P Mascia