A sealer is disclosed for sealing upper and lower portions of a web without sealing the portions together, such as side gussets in side gusseted bags. A sealing bar is placed below the web and fixed with respect to the machine. Another sealing bar is placed above the web, parallel to the first one. An air cylinder can urge the upper sealing bar down against the lower one to seal the web. A platen ...

A multilayer printed wiring board having an air gap between neighboring printed wiring boards of the multilayer printed wiring board by inserting plated spacers to both end faces of through-hole pads which are provided to each printed wiring board so that each through-hole pad opposes to another through-hole pad on the neighboring printed wiring board. The spacers opposed to each other are joined ...

A voltage drop develops across a thermistor connected between a power source and a load in proportion to the current draw. A zoner diode becomes conductive in the reverse direction when the voltage drop increases to a threshold, thereby connecting the voltage drop to a light emitting diode (LED). For detecting excessive current draw, the LED is normally off.

A plasma apparatus which generates a radio frequency (UHF or microwave) disk plasma 16 and a hybrid plasma 45 derived from the disk plasma. The microwave plasma acts as a source of excited ion and free radical species and electrons for the second plasma which is hybrid in that it contains species from both microwave and dc (or rf depending on bias) excitation. The hybrid plasma can be used to trea...

A test kit and method is disclosed for the semi-quantitative detection of Streptococcus mutans from the oral cavity of a patient. Saliva from a patient is introduced into a diluent solution to which has been added just before the saliva a predetermined powdered amount of bacitracin. Then the diluent solution is contacted with a sterile media-coated paddle, the media-coated paddle containing the di...

A novel examination light that utilizes a quartz halogen lamp and dichroic reflector to produce heat free white light, mounted on a versatile support arm that is moveable in a vertical arc through any angle about a support axes and is counterbalanced by a unique spring and friction arrangement that allows it to remain, drift free, at any location. The arm is mounted on a vertical pole affixed in a...

An arrangement for producing a broadband junction between a microstrip line and a coplanar transmission line in the following called "twin band line" provides that the microstrip line and the twin band line (ZL) extend at right angles relative to one another. The ground electrode of the microstrip line and the ground electrode of the twin band line lie immediately one on top of the other. The stri...

A signal processor which applies non-linear dynamic compensation to an applied analog signal is tested by applying to a reference ramp signal compensation having a transfer function equal to the inverse of the transfer function of the signal processor. This test signal is applied to the signal processor in place of the sensor signal so that after the compensation of the processor is applied to it,...

Apparatus for applying liquid to the contacting surface of a roller used in pressing an elongate line to a moving workpiece. The apparatus includes a shoe, mounted on a frame, with a curved face contoured to conform to the curvature of the contacting surface of the roller and a well for holding liquid indented inwardly in and surrounded by the curved face of the shoe. The shoe face terminates in a...

Self-venting balloon dilatation catheter having a flexible tubular member with first and second lumens extending therethrough. An inflatable balloon is carried by the distal extremity of the tubular member in such a manner so that the first lumen extends through the balloon and is out of communication with the interior of the balloon and the second lumen is in communication with the interior of th...

A method of bonding and shaping a plurality of pieces of material disposed in a fluid tight container includes providing a housing having components with different coefficients of thermal expansion. The container is positioned between upper and lower sections of the housing. The housing is then enclosed in an autoclave. The fluid in the autoclave and housing is heated with a resulting increase in ...

A twin wire splitter system comprises an X-Y table for mounting a printed circuit board thereon; a wire bonding device for continuously bonding a twin wire to a plurality of wire connecting positions on the printed circuit board; a feeding device for feeding the twin wire; a splitting device provided on a twin wire feeding path to split the twin wire; and a splitting operation controlling device f...

A bonding apparatus for bonding lead wires to a semiconductor surface includes a supply spool that contains a supply of the bonding wire that is fed to a capillary that is made of a non-conductive material. An electric arc forms a ball on the tip of the arc and the ball is retracted into the capillary. The ball is heated and compressed onto the semiconductor substrate and is then stitched over to ...

PURPOSE:To store 100 cores by using the same closure as a metal closure by connecting plural excess length storing sheets with the shift of a fixed width so as to be opened/closed and coupling folded parts so as to be opposed to each other through one separating sheet. CONSTITUTION:Five excess length storing sheets 3 are laminated with intervals more than the outer diameter of a connection point r...

PURPOSE:To measure an end surface interval easily at a high speed with high accuracy by arranging the optical axis of a photosensor with a shift from the center axis of a reference optical fiber and detecting the power of light form a light source which is cut off as an abutting optical fiber comes closer. CONSTITUTION:The ridge of a sensor optical fiber 21 viewed from the top surface of its core ...

Improved silicon semi-conductor device and process includes three layer sandwich passivation coating. The sandwich coating comprises first, a thin silica layer, preferably produced by oxidizing a silicon surface to the minimum thickness necessary to prevent interdiffusion of an overlying nitride layer with the silicon subsurface. The second layer of the sandwich construction is nitride and the thi...

In the particular embodiments of the invention disclosed in the specification, a single crystal silicon plate having heavy metal impurities is coated with a layer of amorphous silicon several hundred to several thousand Angstroms thick in a vacuum vessel by a glow discharge at a pressure of 1 to 10 Torr and a temperature of about 200 DEG C. Silane gas is used to form a non-doped layer and about 1...

A process for polishing silicon wafers includes the step of carrying out the last polishing step in the polishing operation in such a way that a protective film of silicon dioxide is produced on the surface of the polished wafer. The film does not interfere with e.g., the subsequent oxidation processes. The protective film protects the wafer surface from the many effects arising in subsequent proc...

An air cleaner assembly includes a pair of molded housing members, each of which include four side walls and an open end. The opposite end of one of the members carries an outlet tube for connection to the air intake system of the vehicle, and the opposite end of the other member includes a lattice-work structure defining openings to admit air into the air cleaner assembly. The two housings snap t...

Thermal expansion compensating arrangement including a vessel and a first member anchored to the vessel so that it can thermally expand uniformly radially outwardly in a given direction from a longitudinal axis of the vessel. A second member is disposed in the vessel with a desired alignment in the given direction relative to the first member at a base temperature, the second member being made of ...