Abstract: A counterbalance mechanism counterbalances an eccentric mass on a rotating shaft supported by a frame. A first pulley is coupled to and concentric with the shaft. An arm is coupled to the shaft to rotatably support a second at a first distance from the first pulley. A third pulley is fixedly coupled to the frame at a second distance from the first pulley. A fourth pulley is rotatably coupled to and concentric with the third pulley. A spring is fixed at a first end to the frame and has a second end that is coupled to the fourth pulley such that the spring provides a restoring force as the fourth pulley is rotated. A first cable has a first end that is coupled to the fourth pulley and a second end that is coupled to the frame through the third pulley after passing over the first and second pulleys.

Abstract: A buffer station provides potential improvement for the operation of a facility. By storing to-be-accessed workpieces in the buffer stations of an equipment, the operation of the facility is not interrupted when the equipment is down. The workpieces can be retrieved through emergency access port of the buffer station, thus ensure the continuous supply of workpieces for the workpiece flow of the facility. Algorithm for getting the needed workpieces to the buffer station is also provided through a controller or a computer mechanism. The buffer station can be incorporated in a stocker, such as wafer stocker or reticle stocker.

Abstract: A counterweight mounting structure for construction machine to which a counterweight is connected through a gap to an exterior constituting an upper rotating body is constituted such that a recessed groove is provided on an end on a connection side of the counterweight, an elastic soundproof material is installed in the recessed groove, and the soundproof material protruding from the recessed groove is brought in contact with, and pressed against an end on the connection side of the exterior when the counterweight is mounted. As a result, there is provided the counterweight mounting structure whose soundproof capability does not decrease even after the counterweight is mounted/dismounted.

Abstract: A cart for use in transporting and demonstrating business machines and the like, the cart comprising a wheel section and a handle section each having spaced apart pairs of track forming frame members along which a carriage for mounting a business machine is adapted to travel from a transport position in which the carriage lies adjacent the lower end of the wheel section to a demonstration position adjacent the upper end of the handle section which is curved to permit the upper end of the handle section to be seated on the top of a desk, the handle section mounting spring assist means in the form of a spiral spring the end of which is operatively connected to the carriage to counterbalance the weight of the business machine as the cart is moved from one position to the other, the cart having a detachable support leg which, in its position of use, converts the cart into a free-standing demonstration stand, a trunk loading attachment also being provided, the attachment comprising a track forming frame extension