PURPOSE: To eliminate a need for a reversing valve and to simultaneously satisfy a demand for heating and cooling by a method wherein a refrigerant input and output manifold is arranged at a panel mounted on an external part and incident solar energy is collected. CONSTITUTION: The direction of a vaporization panel 12 mounted on the outside of a sealed space formed by a system is held such that ab...

A sytem and apparatus therefor which stores and processes flexible strip materials and particularly tire manufacturing components such as the tread portion. A portable storage unit has a pair of hollow, cylindrical-shaped spools loosely supported on a pair of cradles within a frame. A pair of annular flanges adjacent the ends of each of the spool surfaces engages stop plates on the frame to retain...

The method and apparatus of the invention use a beam of laser emitted optical energy to effect wound closure and reconstruction of biological tissue. In response to input as to tissue type and thickness, a computer determines the output power, exposure time and spot diameter of the emitted beam to control the application of optical energy to produce thermal heating of biological tissue to a degree...

A ski binding for mountain and/or cross country skiing in which a ski member is provided with a fixed upstanding frame structure providing a pivot pin support for pivotal mounting of a cradle member or boot platform which receives a ski boot, the cradle member having a pivot pin releasably supported from the frame structure at a location above and approximately in the same vertical planar zone of ...

A polysiloxane-polyoxyalkylene composition of the nominal formula: wherein R is an alkyl group having 1 to 3 carbon atoms and R DEG , R', R'' and R''' are individually monovalent polyoxyalkylene polyethers attached to the silicon atom through a difunctional link; and, the polyoxyalkylene of R' is a poly(oxyethylene-oxypropylene) ether which contains 20% to 60% oxyethylene by weight and h...

An in-mold lacquer coating, and a process for utilizing the same, for producing a polyurethane-based molded article. The lacquer coating is mold-releasable without the aid of an external mold release agent, is re-coatable after de-molding without additional surface preparation, and comprising a mixture of a pre-reacted aliphatic polyurethane resin, a technically simple silicon resin mold-release a...

An automatic guiding system for an unmanned goods transportation vehicle is provided by a one dimensional optical detector responsive to specialized targets mounted along a side of the vehicle's path of motion. The specialized targets consist of combinations of retro-refelctive and mirror-like devices in patterns allowing the vehicle to determine both the relative position and heading angle in a s...

Blowing agent consists essentially of 10-80 mol % of trichlorofluoromethane and 20-90 mol % a normally-liquid organic compound of boiling point below 120 DEG C (especially 1,1, 1-trichloroethane or 1,1-dichloro-1-fluoroethane). The blowing agent is useful for making polyurethane foams.

The device comprises, mounted on the steering column, a sleeve (2) in the outer surface of which are provided cavities (3) for receiving the bolt (4) of a locking system (5) for preventing rotation of the column. The sleeve is mounted on the column with a tight fit which produces the deformation of at least one of the two parts beyond the elastic limit of the material from which it is made.

Apparatus for testing an electrical switch responsive to fluid under pressure and a solenoid valve that controls the flow of fluid under pressure. Fluid under pressure is injected into a socket holding the switch to be tested. The magnitude of the pressure is predetermined in accordance with the rating of the switch. An electrical circuit is connected to the switch to determine whether the switch ...

A snap hinge closure connects two parts, such as, for example, a lower and an upper part of a closure. Both parts have casing walls which, in the closed position of the hinge, match vertically above one another. On both sides of the film hinge, tension bands are positioned, which, in the closed position, are tensed. The tension bands are held, with their ends, in recesses (11) in the casing walls,...

A printer includes a printer body (10) and an automatic sheet feeder (12). The printer body has a case (14) in which a printing mechanism (28) and a continuous paper feeding mechanism (30) are arranged. An upper wall (20) of the case has a cut sheet supply port (18) and a paper discharge port (16) formed therein, both of which are located close to the printing mechanism. The sheet feeder is mounte...

A process for etching polytetrafluoroethylene (PTFE) is disclosed herein which comprises defluorinating the surface layer of PTFE. The process includes exposing a sample of PTFE to the vapors of an alkali metal such that a layer of the fluoride of the alkali metal is formed on the surface of the PTFE sample and removing the fluoride of the alkali metal from the surface of the PTFE sample.

A process for producing pre-expanded particles of a thermoplastic resin, wherein said particles are of a polyolefin obtained by polymerizing an olefin in the presence of a Ziegler-Natta catalyst, and contain not more than 1% by weight of particles of diameter up to 105 mu m and having a particle size distribution represented by: R(Dp) = 100exp[-(Dp/De)] where Dp is300 or more and represents a...

Silicone foams having a reduced density can be made by cooling the foam components of vinyl-terminated polydiorganosiloxane, methylhydrogenpolysiloxane, hydroxylated material, such as water and platinum catalysts, and mixing and maintaining the foamable mixture at a temperature of less than 5 DEG C.

Described are ways of improving the yields of specification grade polyimide foam on a consistent basis from one run to the next, by use of improved microwave-based foaming processes. In one such process, during the application of the microwave radiation, the body of polyimide precursor and of the foam structure as it is developing therefrom are maintained under a substantially vapor-impermeable mi...

Novel polycarbonate latex compositions comprising 0.1 to 30 mole percent of recurring units containing a carboxyl or a tertiary amine acid addition salt component are disclosed. The latex compositions are made by: (a) preparing a polycarbonate comprising from about 0.1 to 30 mole percent of recurring units having a carboxyl or a tertiary amine acid additon component; (b) dissolving the polycarbona...

A self-emulsifiable resin powder can be dispersed in water without utilizing additional surfactants or expanding large amounts of mechanical energy. Such self-emulsifiable resin powders offer numerous distinct advantages over conventional latices. One of the most important benefits that is realized by utilizing self-emulsifiable resin powders is that they can be shipped dry which is the equivalent...

A system is provided for transmitting signals between a sensor assembly contained in one or more well probes lowered into a well at the end of a cable and a surface control and recording unit. The cable includes a central line surrounded by several other lines and an external metal sheath. The transfer of data from the reception assembly to the surface installation is provided by applying suitably...

A hydraulic cement mixt. comprises a hydraulic cement, an aggregate of 80 wt.% based upon the total weight of the cement mixt., a sufficient water to effect hydraulic setting of the cement, and an additive. The additive contains (a) an alkali metal, alkaline earth metal or ammonium salt of thiocyanic acid of 0.05-2.5 wt.% based upon the weight of the cement, and (b) an alkanolamine of 0.001-0.05 ...