Abstract: An electronic or mechanical timepiece of the analog display type provided with a gear train for driving timekeeping hands. The gear train includes a center pipe affixed to an intermediate bridge secured to the base plate, a free cannon pinion being rotatably supported on the pipe and having a center wheel mounted thereon which is disposed in the space between the bridge and a section of the base plate, thereby providing a dependable support for the cannon pinion without the need for enlarging the diameter of the center wheel or of the drive pinion intermeshing therewith.

Abstract: In order to simplify the production of electronic watches, there is provided a family of standardized movements whose members can be housed within a variety of watch cases of different size and shape. All movements in the family are identical but for their mounting plates which differ in size, and in some instances also in shape, to render the movements receivable in differently-configured cases. The standardized movements in the family include batteries of different size which take advantage of the space made available by the plates of different size to afford optimum battery life.

Abstract: A casing ring adapted to encircle a watch movement having an external diameter that is smaller than the internal diameter of the case into which it is to be fitted, the ring serving to effectively magnify the movement diameter so that it substantially matches that of the case. The case is provided with an actuating member intended to cooperate with an operating element, such as an electrical switch, incorporated in the movement to carry out a setting or other operating function. The portion of the casing ring interposed between the actuating member and the operating element is swingable to function as an intermediate link therebetween for transmitting the motion of the member to the element.