Apparatus for moving within a region includes a base, a tray and a plurality of legs intercoupling the base and the tray. The tray carries a seat and is constructed and arranged so that a person sitting in the seat may use foot power to translate in any direction within a predetermined region and rotate.

Olefin polymerization is conducted with a Ziegler-Natta catalyst in which unreacted monomer is recycled to the reactor. The recycle line contains a supported nickel or nickel oxide to purify the unreacted monomer before its return to the reactor, and results in improved catalyst activity and more control over physical properties of the product.

Apparatus for exercising and developing lower extremity muscles including a concave track in a form of a circular segment having a predetermined radius and a platform movable along the track. The track is so configured as to allow the primary axis of a user's body to remain essentially normal to the portion of the track in registry with the platform during use so that reactive forces from the track will be directed substantially along the primary axis to promote stability.

A molding process, resinous formulations for use in the process, and the resulting products are disclosed characterized in that the product comprises mainly a bulk or fill resinous body having a film or skin of a cross-linked polyester resin formed about the body. Even though the body has intricate curving surface contours, the film is smooth and free of surface tears and blemishes. The product is molded by first spraying formulated, dry particles of a partially cured polyester resin against a h...

Disclosed is a socket (10) including a base (12), an array of contacts (22) in columns and rows, a plurality of positioning blocks (121) between the rows of the contacts of the base. Each of the contacts includes two deflectable contact pieces (223) at a distal region thereof to capture one ball (200) of an IC device (20) in a manner to prevent movement of that ball in a first horizontal direction. Some of the positioning blocks are arranged for preventing movement of balls of the IC device in a...

An exercise device for martial arts conditioning including a belt having rings, a torso harness a hand stirrup for each hand, a knee band for each knee, and an ankle band for each ankle. The harness includes front and back straps and is attached to the belt in the front and the back. A loop is attached on the harness at each shoulder for receiving an elastic cord. At least two more loops are attached to the back strap to receive elastic cords. Specialized channels in the knee band are adapted to...

A walking chair having a pair of opposed arcuate side frames and a front rod pivotally connected with corresponding first distal ends of the arcuate side frames, a rear rod opposed to the front rod and pivotally connected with corresponding second distal ends of the arcuate side frames, such that when a folding device which is provided at joints of the front rod and the first distal ends of the arcuate side frames and of the rear rod and the second distal ends of the arcuate side frames is activ...

A wedge connector for integrated circuits comprises tapered fingers of conductive metal separated by an insulator. The tapered fingers are wedge-shaped, in that they are thinnest at their tips, so that they may more easily enter the space between adjacent legs of an integrated circuit (IC). A row of wedges is assembled, and spaced apart to interdigitate with the legs of the IC. The IC legs have sides that face each other along the direction of the row, and that are separated by the amount of the...

A photomicrographic apparatus, which takes a picture of an enlarged image of a specimen observed under a microscope, causes filter insert/remove means to insert a light intensity-reducing filter in the photometric optical path to a light-receiving element when the light-receiving surface illuminance of the light-receiving element exceeds the upper limit of a first photometry enable illuminance range, and makes the filter insert/remove driving means remove the light intensity-reducing filter from...

An exercise device that simulates downhill skiing as well as thoroughly exercises one's body and cardiovascular system comprises a base support member that rests on the floor or ground. An elongate support member is pivotally attached to the base support member for pivotal, swaying movement about a longitudinal axis adjacent to the base support member. A biasing mechanism is associated with the elongate support member for exerting a biasing force to bias the elongate support member toward an ups...