The utility model relates to a multi-purpose circulation water tank for a solar energy water heater, comprising a water tank (1), circulation pipes (2 and 6), a water inlet pipe and a water outlet pipe (3 and 5). The utility model is characterized in that the lower part of the water tank is additionally provided with a water charging pipe (7). The water tank of the utility model the advantages of ...

The invention relates to a process for the production of substantially non-alcoholic beer by a continuous yeast treatment at a low temperature. In the process, wort which has been clarified and possibly treated by evaporating and/or with an absorbing agent is passed through a packed column reactor containing immobilized yeast at a temperature ranging between the freezing point of wort and +10 DEG ...

Apparatus for detecting and mapping defects in the surfaces of polycrystalline materials in a manner that distinguishes dislocation pits from grain boundaries includes a laser for illuminating a wide spot on the surface of the material, a light integrating sphere with apertures for capturing light scattered by etched dislocation pits in an intermediate range away from specular reflection while all...

A polyurethane foam is constituted by using a blowing agent selected from the group consisting of iodofluorohydrocarbons, perfluoroalkenes and hydrogen-containing fluoromorpholine derivatives. These blowing agents have a low thermal conductivity and a short life in the air, and thus impose no or very small load such as ozone layer depletion potential (ODP) and global warming potential (GWP) on the...

A transurethral radio frequency apparatus for ablation of the prostate gland through the urethra formed by a wall, a probe consisting of a flexible elongate tubular member with proximal and distal extremities and sized so as to be adapted to be inserted into the urethra, and an ablation electrode carried by the distal extremity of the flexible elongate member. The flexible elongate tubular member ...

In a process for the preparation of rigid polyurethane foam from a polyol and a polyisocyanate, it is possible to prepare rigid polyurethane foam by using an aqueous polymer emulsion comprising a polymer of ethylenically unsaturated monomers whereby the amount of chlorofluorocarbon used can be decreased or eliminated.

A slide member made of a sintered aluminum alloy includes a matrix (1) of an aluminum alloy and an aluminum nitride film (2) dispersed along the powder boundary of this matrix. When a state in which the aluminum nitride film (2) encompasses completely and continuously the old powder boundary is defined as a dispersion ratio of 100 %, the aluminum nitride film (2) is dispersed discontinuously at a ...

A composite card reader (11) used for IC cards, magnetic cards and the like to which the card is manually inserted and extracted is dislosed. The composite type card reader (11) has a shutter lever (28) for opening and closing a card inlet (13), a locking mechanism for locking the card by closing the shutter lever (28), and a lock releasing mechanism for releasing the lock by opening the shutter l...

An aqueous dispersion suitable for use as various coatings is provided. The dispersion includes polyester resin (A), a water soluble organic compound (B), water (C), and a neutralizer (D). The poylester resin has an acid number of 50 equivalents/10<6> g or more. The polycarboxylic acid component of the resin contains aromatic dicarboxylic acid having no metal sulfonate groups in an amount in the r...

The invention starts from the known technology of providing, at the segment edges of radially parted vulcanisation moulds, yielding volumes for the rubber which is forced towards the segment boundaries on closing of the mould. While these yielding volumes have hitherto been arranged inside the tyre contour, the invention proposes to provide the yielding volumes outside the tyre contour in order to...

PCT No. PCT/CH93/00014 Sec. 371 Date Oct. 18, 1993 Sec. 102(e) Date Oct. 18, 1993 PCT Filed Jan. 21, 1993 PCT Pub. No. WO93/13737 PCT Pub. Date Jul. 22, 1993.The device represented in its storage position contains essentially a body (11) in synthetic material containing a reservoir (10) containing a medicinal substance (29). The body (11) is fitted with an applicator nozzle (15). The reservoir (10...

The buttonless memory system of the present invention retrieves and stores the measurement results of a sample for the user of an electronic measurement device, particularly a portable and personal electrical measurement device, with minimal user interaction. The user simply activates the portable measurement device and waits as the buttonless memory system initially cycles through the stored meas...

A sofa-bed having an articulated folding structure comprises a fixed carrying framework (2) to which a main movable frame (3) is engaged through a pantograph linkage (4), which main frame is movable in a vertical direction. Consecutively and rotatably connected to the main movable frame (3) are first and second auxiliary movable frames (17, 18). An interconnecting lever (20) operating between the ...

A method for producing powder by atomizing a stream of molten material by contact with a swirling annular gas stream having an angular to axial velocity ratio sufficient to cause some of the gas to flow in the axially opposite direction from that of the gas stream.

A down-hole data logging system for use with an electrical submergible pump or ESP (7) allows information to be obtained on the production characteristics of a plurality of producing zones (1,2,3) and/or regions within a zone or zones of an oil well. The system includes production tubing (6) depending within said well into said producing zones (1,2,3) equipped with isolation means (4) to prevent f...

The angular velocity sensor 18 is manufactured from a silicon-on-insulator (SOI) wafer. An oscillating structure 19 is constructed from the bulk substrate material of the SOI wafer and displaceable Coriolis acceleration sensors 2, 3 are constructed on it from the SOI layer of the wafer. Such an integrated construction results in a low thickness tolerance and low stress gradient in the SOI layer en...

A mud pulse telemetry system (10) for use as part of a measuring-while-drilling system comprises an uplink transmitter (18) including a multi-level encoder (34) and a continuous-value mud pulse transmitter (30); and a receiver (22) including a multi-level decoder (36). A downlink system can also be provided comprising a transmitter (24). The uplink and downlink signals can be frequency multiplexed...

The device uses an operating wheel (3) which is axially displaced relative to the steering wheel (2), the displacement of the operating wheel indicated by a setting potentiometer (8,9) attached to the steering wheel. The setting value provided by the potentiometer is used to control a setting motor, acting on a setting element for the accelerator pedal. The actual position of the setting motor is ...

Coating of a polycarbonate article based on a cycloaliphatic bis-phenol of formula (I) comprises application of a 0.5-200 micron layer contg. an acrylate-, allyl-, epoxide-, silanol, NCO-, anhydride and/or melamine function-contg. crosslinkable component, followed by heat and/or radiation hardening, the layer opt. also contg. a heat- and/or photo-hardening catalyst. In (I), R<1> and R<2> = H, halo...

This invention pertains to foamed algal plastics and products made therefrom, and methods for making algal plastics. The invention also pertains to algal plastic resin precursors for generating the foamed algal plastics and algal plastic products. The foamed algal plastics comprise a foamed and stabilized algal fiber matrix having substantial dimensional stability. The foamed algal plastics can be...