PURPOSE:To improve quality by markedly reducing the effect given on the forming region of a semiconductor element by a method wherein a local heating treatment is performed by projecting a high energy ray focused beam on the front and the back sides of a wafer, and both front and back sides of the wafer are brought into the state of mirror-face. CONSTITUTION:The microscopic region on both front an...

The inflatable bag has grooves extending from its central area to its edges, intended to channel away air. In order to prevent undesirable constrictions of these grooves during tyre production, the grooves become wider towards the edges of the inflatable bag.

A speed change transmission is shown in variation having an extremely wide range of selectively engageable speed drive ratios for use with garden tractors and utility cycles with tractor mode. The transmission also serves as a speed range transmission for use with a hydrostatic transmission in a garden tractor. In variation the transmission is shown with a new two speed PTO systme featuring select...

Outside of the oil seal attached to the side gear shaft position in the final reduction gear apparatus, a guide member is installed which has an inner diameter slightly larger than that of the main lip of the oil seal and has a guide surface concentric to the main lip; the side gear shaft is pushed along the guide surface of said guide member, whereby the interference between the side gear shaft a...

An electrosurgical generator having a source of electrosurgical energy connected to a patient and including control circuitry for decreasing the output power from the source with increasing patient impedance, the rate of power decrease being substantially greater than that which would result if the output voltage from the source were maintained constant over the range of increasing patient impedan...

Umbrella apparatus includes a plurality of flexible support elements extending outwardly from a common location on a base cross piece. Flexible material is secured to the base cross piece and to the flexible elements. The umbrella apparatus is foldable when tension is removed between the flexible elements and the base cross piece.

A method of manufacturing a porous body using particulate material as a starting stock. The particles are inserted in a can, the can evacuated and inert gas admitted to a predetermined back-fill pressure. After hot isostatic pressing, the compact so formed is cooled and subsequently heat treated to permit the pores formed in pressing to expand and form a porous body.

A copolyester film comprising: (a) a copolyester which comprises, as a dicarboxylic acid component, 80 to 97 mole percent of terephthalic acid and 3 to 20 mole percent of isophthalic acid and, as a diol component, 60 to 85 mole percent of 1,4-butanediol and 15 to 40 mole percent of diethylene glycol, and said copolyester having a reduced viscosity in the range of 0.8 to 1.4 dl/g and a melting poin...

An improved method and composition for repairing cementitious surfaces is provided. A polymerizable urethane composition having an excess of isocyanate groups to account for water present in the reaction environment is utilized. The method utilizes water, e.g. surface moisture, to foam the polymer and provide a long-lived repair of the surface. The method is particularly applicable in the repair o...

A device including a hand-held hair dryer and a hair dryer mount adapted to be attached to a planar support. The mount includes a catch for supporting and releasably preventing detachment of the hair dryer from the mount. In one embodiment, the hand-held hair dryer includes a first end and a second end with an indentation, and the catch includes a lower lever for receiving the first end of the hai...

There is disclosed a circuit arrangement comprising a microcomputer, wherein certain terminals of the microcomputer may be used as either input terminals or as output terminals under selective switching control so that a reasonably priced microcomputer with few terminals can be used to control complex functions such as those of a vehicle seat adjusting mechanism. The circuit arrangement also inclu...

The present invention relates to a method for fine positioning vehicles in exact relationships to geographic reference markings, whereby the vehicle (1) is adapted to fetch and deliver loads (2) preferably goods carried on loading stools or pallets, at fetching and delivering points (3-14), whereby it is required that the vehicle (1) repeatedly may be brought to exact positions relative to said fe...

The invention concerns a method of automatically steering a self-propelled floor-cleaning machine along a predetermined path of motion on a limited area to be worked, wherein a sequence of path segments stored in a data memory is retrieved, and the path segments travelled by the machine, and wherein markings are recognized by at least one sensor and converted into course-correcting control command...

A safety ski binding having a sole plate which is pivotally supported on a ski-fixed pivot pin in a horizontal plane, however, is secured against lifting off from the ski. The sole plate has a front jaw at its front end and a heel holder provided with a housing at its rear end. The heel holder has a sole holder which is pivotal upwardly about a transversely extending axle on the housing against th...

A safety ski binding including a sole plate pivotally supported on a ski-fixed pivot pin in a horizontal plane, however, is secured against lifting off from the ski. A front jaw is provided on the sole plate at its front end and a heel holder at its rear end. A housing is provided and includes a sole holder pivotally supported for movement about a transversely extending axle against the force of a...

SELF SEALING PNEUMATIC TIRE Pneumatic rubber tire (1) with a puncture sealing feature comprised of an enveloped open network structure (6) containing a sealant composition on the inner portion (8) of the tire (1).

An electrosurgical generator including a patient circuit including an active electrode and a return electrode; a pulse train generating circuit an MxN storage device having M memory locations where M>1 and where each location contains N storage positions where N>/=1, the storage device storing at least one, K-bit binary signal, where 1

The present invention relates to a device for generating a wave of solder in a wave soldering machine used for soldering components on printed circuit boards passing through the machine, said device being equipped with a nozzle comprising an elongated chamber with convergent walls and a discharge opening at its upper part, which opening extends below the displacement path of the printed circuit bo...

A readily adjustable shatter jet mechanism comprises a frame which rotatably and displaceably receives a fluid supply pipe assembly. The assembly includes a fluid supply pipe which is pivotally movable. A nozzle is connected to the pipe and can be rotated into one of a plurality of rotational positions. The assembly can be disengaged from the frame and reengaged with the frame at a different locat...