PURPOSE:To eliminate the oscillation of a helicoid position near a focus point and to perform the focusing operation without malfunctions, by detecting a focus voltage and calculating the variation between the current value and the maximum of past detected values. CONSTITUTION:The object reflected light from a lens 1 is converted to a signal in a camera circuit 2 and passes through an HPF 10 and i...

A wide precipitate-free-zone (PFZ) is formed at the surface of a semiconductor substrate and at the same time a high density of oxygen precipitate particles are produced beneath at the surface PFZ by a two step annealing process involving a first cycle of very rapidly heating the wafers to a first high temperature and a second cycle of very slowly heating the wafers to a second high temperature.

A two piece blind fastener for securing a plurality of workpieces including a hollow sleeve having an enlarged sleeve head at one end, a pin having an enlarged pin head, the pin having a pin stop shoulder and a lock groove located near the pin stop shoulder, the pin head adapted to engage the sleeve to form a blind head in response to a relative axial force applied between the pin and sleeve, the ...

A blind, self-plugging rivet assembly for securing together two members (42, 43) is of the type comprising a tubular shell (13) with an enlarged head (14) at one end, and a stem (12) which extends through the bore (15) of the shell, the stem having an enlarged head (38) beyond the tail end (18) of the shell. The shell has a weakened zone (19) formed by three slits (22) extending along part of the ...

Ces moyens de liaison comprennent un barreau déformable élastiquement (7A, 7B) solidaire d'une des pièces à joindre et logé dans une fenêtre (16A, 16B) de celle-ci, et un doigt (8A, 8B) solidaire de l'autre pièce et en saillie dans le sens longitudinal sur celle-ci, lequel doigt présente un bourrelet adapté pour s'encliqueter par coopération avec le barreau élastique.
Application aux gril...

PCT No. PCT/AU87/00190 Sec. 371 Date Mar. 3, 1988 Sec. 102(e) Date Mar. 3, 1988 PCT Filed Jun. 30, 1987 PCT Pub. No. WO88/00129 PCT Pub. Date Jan. 14, 1988.The method of reinforcing a structure formed by interengaging the edges of ribbed strip (1) formed of a plastics material to form a helically wound tube, the strip (1) comprising a plurality of the ribs (2) spaced apart and upstanding from a ba...

PURPOSE:To obtain a uniform film thickness, by a method wherein an inert gas is supplied before carrying out deposition in order to check whether there is any difference in flow rate between a reaction gas and the inert gas, and only when the flow rate of the reaction gas is equal to a desired value, deposition is performed. CONSTITUTION:As a reaction gas, a dichlorosilane gas source 1 and an ammo...

Apparatus and method are provided for effecting gas-assisted, solid-to-solid thermal transfer with a semiconductor wafer. A semiconductor wafer is loaded at its periphery onto a shaped platen. Sufficient contact pressure from the loading is produced between the wafer and the platen so that significant gas pressure may be accommodated against the back side of the wafer without having the wafer bow ...

Novel dimer esters and polyesters derived from and adduct of 5-norbornene-2,3-dicarboxylic anyhydride and O,O-dialkyldithiophosphoric acid have been produced. These dimer esters and polyesters are useful extreme pressure agents, antiwear agents and oxidation inhibitors as well as friction modifying agents for functional fluids used in motorized vehicles.

A device for mounting for mounting jaw casts in an articulator, has a spatially adjustable cast plate, an articulator base plate, and wedges that can be moved longitudinally and transversely. The wedges can be rotated axially, and fixation elements can be moved like a sled in the inclination of the wedges. The fixation elements can be locked in a predetermined position by screwing in the inclinati...

PURPOSE:To dehumidify air when the relative humidity is high and humidify the air when the relative humidity is low by a single air conditioner by providing a humidity control means to an air passage formed in the main body. CONSTITUTION:A blower 6 is operated, and the room air is introduced into an air passage 4 from an air intake 2 at the lower front of a main body 1 and passed through a dehumid...

PURPOSE:To wind the conductor to the winding frame in almost a helical shape by setting the mechanism for feeding the conductor which can twist the conductor nearby the bobbin. CONSTITUTION:At first, an end part of the conductor is bitten in the caterpillar 34 and the conductor is fed. The conductor 3 is passed through the inlet roll 31, the central roll 32 and formed with bending and twisting at ...

PURPOSE:To suitably use a conductive member as electrodes for a printing press, a copying machine, a polymerization apparatus, etc., by using, as a conductive surface layer, a carbon fiber or a compound layer which contains carbon fibers and in which carbon fibers are allowed to appear to the surface. CONSTITUTION:As a conductive surface layer 3 of a conductive layer, a carbon fiber or a compound ...

PURPOSE:To enable stable and efficient generation of a nuclear fusion reaction by a simple construction, by constituting a material of a cathode by combining a metal or alloy occluding heavy hydrogen with a metal or alloy being different in the quality therefrom. CONSTITUTION:A Pd metal plate 2 occluding heavy hydrogen and a base plate of a stainless steel plate 1 hardly occluding the heavy hydrog...

PURPOSE:To jet small ink drops necessary for printing each time a electrical pulse is applied for printing by applying a negative pulse voltage to an electromechanical conversion means at non-jetting time while a positive pulse voltage is applied at the jetting time. CONSTITUTION:Prior to the jetting, a negative voltage is applied to a pressure plate 41 to deflect it convex upward while a positive...

A digital conference circuit for a digital telephone switching network is provided, connected between a receive TDM (time division multiplex) bus carrying PCM (pulse code modulation) words to the conference circuit and a transmit TDM bus carrying PCM words from the conference circuit. A memory (storage) device stores the PCM words most recently received on the receive TDM bus and decision circuitr...