Abstract: A dental device is provided for fabricating dies from flexible impression material wherein the model, die and articulation mounting are accomplished in a single pouring. The device comprises a pair of recessed pivotal trays generally shaped to an individual's jaw. The member each includes inner and outer walls having internal ridges running vertically therealong at spaced distances and a base having predetermined spaced apertures thereabout to receive an insert. The trays are designed to be mounted face to face with a like member and open to 180.degree.. The tray includes hollow cylindrical portions in the rear thereof, engaged by a transverse element for pivoting thereabout. A vertical stop pin is mounted through the distal arm to maintain the respective spacing of the trays. The insert member has downwardly projecting portions extending through the base apertures, a base engaging the base of the tray and an upwardly extending rib which is located centrally within the walls of the tray.

Abstract: This invention relates to a weatherstripping method and arrangement primarily for doors which is designed to eliminate drafts which result in heating and cooling losses. The arrangement is simple to install and relatively inexpensive. An elongated wood lattice strip is mounted to the door jamb on both sides of the door and along the top and spaced at a predetermined distance from the door when the door is in a closed position. A lubricant is applied along the exterior face and top of the door opposite the wood lattice and a paper tape is placed over the lubricated area. The door is then closed and a silicone rubber caulking compound is inserted into the space between the paper tape and the lattice strip. The door is maintained in a closed position until the silicone caulking hardens and then the door is opened and the paper tape peeled away from the lubricated surface. The silicone bead thus provides a formfitting weatherstripping door.

Abstract: A jack for lifting unbalanced loads such as automobiles, comprises a base having a raised portion thereon with a recess therein to accommodate the base of a jack column. The recess for the jack column is offset on the base and oriented to place a major portion on the base beneath the jack saddle during operation in order to increase stability. A substantially circular collar is mounted about the jack column at a predetermined distance from the base, said collar being supported by a plurality of spaced flexible legs pivotally mounted to the base at one end and curving upwardly to a removable mounting at the collar to prevent column tilt. The jack also includes a saddle assembly having a movable saddle with a protruding portion to engage an aperture in the load which is oriented to approximate the direction of lift point shift.

Abstract: An improved pushbutton quick-release socket wrench includes an adaptor which comprises a hollow elongated member having a spring-loaded elongated member mounted axially within a central recess. A ball extends through the side wall of the member at one end of the member to engage a bearing recess in a socket which mounts to one end of the adaptor. A cam portion of the spring-loaded elongated member permits coupling of the ball to the mating socket when a plunger button on the wrench is depressed. Releasing the button drives the ball into contact with the socket recess to provide an integral structure for operating purposes. The adaptor is coupled to the driving stud of the wrench by driving a protruding ball into contact with a mating hole on the other end of the adaptor. The ratchet structure with a hollow stud extending therefrom with an axial plunger is mounted within a toothed recess in the wrench handle.

Abstract: A system for activating solar cells involves the use of phosphorescent paint, the light from which is amplified by a thin magnifying lens and used to activate solar cells. In a typical system, a member painted with phosphorescent paint is mounted adjacent a thin magnifying lens which focuses the light on a predetermined array of sensitive cells such as selenium, cadmium or silicon, mounted on a plastic board. A one-sided mirror is mounted adjacent the cells to reflect the light back onto said cells for purposes of further intensification. The cells may be coupled to rechargeable batteries or used to directly power a small radio or watch.

Abstract: A partition and paneling system comprises connecting means for joining of abutting wall panels together to form an integral wall. The connecting means includes a head section supporting the ceiling and connected to the conventional overhead steel work or black iron. Downwardly extending top guide channels are mounted to the head section and the upper portion of a fastening member is located within the top guide channels and extends downwardly therefrom. The fastening member comprises an enlarged upper portion, an elongated intermediate portion having tapered wedged-shaped blocks at intermediate portions therealong and a lower enlarged portion having a threaded axial aperture which is engaged by a threaded rod. The rod is locked in the lower enlarged portion at one end and has an outwardly extending block at the lower end thereof and an elongated lock nut mounted thereto.

Abstract: A firearm sling keeper comprises a channel member which completely encloses a small segment of the doubled sling strap and is fixed to the stock of the arm by means of conventional sling swivels at the toe of the butt stock and toward the muzzle end of the stock forearm. The sling strap is free to move longitudinally through the channel member in response to a shift of the center of gravity of the slung firearm. The exterior surface of the channel member opposite to and facing the stock forearm has a large number of small plastic hooks, comprising one-half of a Velcro-type fastener. The mating eye portion of the Velcro-type fastener is located on a fabric and/or plastic patch which is detachably mounted to the user's garment by means of a lockable pin device or fastener secured firmly to, or incorporated into, the patch.

Abstract: A rotary valve system for use in internal combustion engines comprises an elongated substantially cylindrical valve passage means having a threaded section at one end and an outwardly extending disc portion at the other end. The outwardly extending lower portion includes a valve disc aperture for alternate communication with inlet and outlet passages in the valve disc jacket for predetermined time periods. The bottom of the disc portion comprises the upper surface of the combustion chamber and can include a shaped protrusion for purposes of charge stratification. Rotation means support the valve disc arrangement for rotation within the cylinder head or valve disc jacket about the longitudinal axis of the assembly. The inner recess of the valve disc jacket which contacts the outwardly extending valve disc is provided with a mating carbon, graphite or molybdenum impregnated sleeve insert.

Abstract: A pneumatic dilatator for introduction into the esophagus and for treatment of a constricted segment of the intestinal system of a living being contains an inflatable balloon and a tube of a given length which is passed through the balloon. The tube receives a gastroscope for observation during treatment. The balloon is preferably of cylindrical shape. Preferably it consists of a flexible material of little elasticity, such as polyurethane, which limits its diameter during an inflation to a given upper value.

Abstract: There is disclosed a two- to four-wire hybrid circuit of a telecommunication system. A line coupling circuit, preferably a transformer is connected to a terminal line. Between the coupling circuit and first and second amplifying means each assigned to a receiving branch and a transmitting branch of a transmission line, respectively there is arranged a balancing network composed of an attenuator, a first and a second hybrid impedance. The first impedance connected to the coupling circuit has a value matching the value of a coupled terminal line impedance which is effective at the four-wire side of the coupling circuit. The second impedance and the attenuator interconnect the outputs of the first amplifying means.

Abstract: A portable tent arrangement comprises a duffle-type pouch having an axial zipper within which rayon tenting material is packed and affixed at one end to the back of the pouch. The pouch is mounted on the rear of a motorcycle or bicycle which supports the rear of the assembled tent. A smaller zippered pouch extends axially along the side of the larger pouch to accommodate various mounting elements such as tent pegs, adjustable tent rods and a pole and folded plastic battens which are used to provide side support. To assemble the tent, the tenting material is pulled out horizontally from the larger pouch, the rods are inserted into four sewn-in corner pockets at each end of the tent and the hinged battens are unfolded and inserted into four diagonal pouches sewn into the sides of the tenting material to provide side support and shape for the tent. Four small plastic tenting pegs are also supplied within the smaller pouch to provide the final shape and support for the tent.

Abstract: An electric gas blast circuit breaker is disclosed which has two stationary contact pieces. A switching unit is movable between closed and open positions for electrically bridging the contact pieces in the closed position and for electrically disconnecting the contact pieces in the open position whereby an arc develops when the switching unit is moved to the open position. A gas blast device blasts a stream of gas through the arc when the switching unit is moved to the open position. The switching unit includes a supporting body and a slide-contact ring made of an arc-resistant material. The ring slideably contacts one of the contact pieces in the closed position and is mounted on the supporting body so as to be electrically insulated therefrom. A plurality of elongated contact elements are disposed in the supporting body for electrically connecting the contact pieces when the switching unit is in the closed position.

Abstract: A circuit arrangement for multi-address switching operations of digital encoded signals between a calling data terminal and a variety of called data terminals operating with different data transmission procedures is adapted for use with an electronic data switching system and comprises at least two interface circuits having input/output converting networks. External input terminals of these interface circuits are adapted for connection with respective input/output units of the electronic data switching system for each type of data terminal. Internal input/output terminals are connected to a storage unit for storing a multi-address message, including data information to be transmitted and identification information of the called data terminals.

Abstract: A method of making a Zener diode having a Zener voltage in the range of 2.4-3.3 volts. The PN junction is preferably formed by selective epitaxial deposition of P-type silicon on a previously oxidized N-type silicon wafer in an opened region where the oxide has been etched away. The N-type wafer may be a uniform silicon wafer with resistivity in the range of 0.004 to 0.006 .OMEGA.-cm or a low resistivity N-type wafer having a 5-20 .mu.m thick N-type silicon epitaxial layer with a resistivity in a range of 0.004-0.006 .OMEGA.-cm. The selectively deposited P-type layer may have a resistivity of 0.001-0.003 .OMEGA.-cm and a thickness of 1.5-3.0 .mu.m. The P-type layer is grown in a gas phase epitaxial reactor by etching the N-type wafer at a first temperature and then depositing heavily-doped silicon at a second, lower temperature.

Abstract: The energy interlock system is designed for a linear accelerator having no electron beam bending system. The accelerator emits electron pulses which are directed to a target for generation of X-ray pulses. The interlock system contains an ionization chamber, a discriminator and a switch. The ionization chamber is exposed to the X-ray pulses for measuring their intensity distribution. It comprises a control electrode and a plurality of electrode segments. The discriminator is connected for detecting energy inhomogeneities in the X-ray pulses. The switch is operated by the discriminator and connected to switch the accelerator on and off.

Abstract: In a central timer unit (CTU), incoming stochastically occurring control information, for example dial pulse data, which is to be buffered for execution after individually assigned delay times, is stored in a random access memory (RAM). Address linkage information is written into the RAM, with each piece of received control data, and chains the incoming data to other received data which is to be read from the RAM at the same absolute (real) time. Each piece of control data is automatically retrieved from the RAM, and retransmitted elsewhere in the telecommunications system, after its specified and predetermined buffering time in the CTU. The pieces of buffered data are individually linked to the CTU's internal time base, which is developed by a clock generator coupled to ring counter driven, hierarchially arranged, time control units.

Abstract: The filter arrangement for an X-ray apparatus contains an X-ray source for emitting a diverging beam of X-rays and a filter plate positioned in the beam of X-rays. The beam is symmetrical with respect to a center beam axis. The filter plate which serves for attenuation of the X-rays before they impinge on a target is mounted on a pivoting axis. The pivoting axis is preferably arranged remote from and transverse to the center beam axis. By pivoting the filter plate about the pivoting axis into a selected position, a selected radiation profile can be obtained on the target. The rotatable filter plate can thus replace a plurality of wedge filters.

Abstract: The system contains a fiber optical transmission line, a first light source for emitting a first light beam into a first end of the transmission line, and at least one first light sensitive element for receiving light from a second end of the transmission line. An energy storage device such as a capacitor is connected to the first light sensitive element for energizing various components. The system further contains a second light source for emitting a second light beam into the second end of the transmission line. This source is controlled in dependence upon information to be transmitted, preferably in dependence of a physical parameter. The system finally contains a second receiver element for receiving light from the first end of the transmission line. This element generates an electric output signal which is in accordance with the transmitted information.

Abstract: The relay contains an excitation coil, a U-shaped yoke with one of its legs serving as the core of the coil, and an armature to operate at least one switching contact of a contact carrier unit. This unit contains a supporting bridge which extends essentially perpendicularly to the axis of the coil and which carries the contact finger(s) of the switching contact(s). The contact carrier unit is fastened to the free leg of the yoke. One edge of the face end of the free yoke leg serves as knife-edge bearing for the armature. The armature is fastened to the free yoke leg by a holding element. In order to make the relay compact and easy to assemble, the armature is angularly formed, thus having a magnetically active leg and a free leg. The free leg which does interact with the core of the coil extends essentially parallel to the free yoke leg. The contact fingers are positioned essentially parallel to the axis of the coil. The supporting bridge is provided with a fastening piece.