An improved method and process for making a foam material, preferably a polyurethane foam material, more preferably a flexible foam material in which an additional additive is incorporated into the liquid foamable mixture. the additive is capable of undergoing or entering into an endothermic reaction of is capable of forming or decomposing into one or more gaseous products at a preselected tempera...

The invention is directed to a method for producing carbon containing fuel elements for smoking articles and to such a fuel element prepared by such method. In order to obtain a pure fuel element a carbon containing starting material is pyrolyzed at a temperature range between about 400 DEG C and 1250 DEG C in a non-oxidizing atmosphere, the pyrolyzed material is then cooled in a non-oxidizin...

A process for producing a foamed polymer, particularly a foamed polyofefin, of highly uniform low density. A mixture of a polymer-forming material, a cross-linking agent, and a blowing agent is placed in a mould and reacted. This reaction product is cooled until the differential temperature between core and surface is below a predetermined maximum, and removed from the mould. The cooled product is...

An overclad optical fiber preform (21) is obtained from a straight preform rod (22) comprising core and cladding, and an overcladding tube (30) such that the difference between the outer diam. of the rod and the inner diam. of the tube does not exceed a set value. The rod is inserted into the tube and successive lengths are subjected to a controlled temp. gradient while reduced pressure is mainta...

A pressure supply unit to supply pressure to a dispensing can, the unit being attached to a gas bulb containing gas under a predetermined pressure. The unit has a chamber pressurized to the desired can pressure, and one wall of the chamber is a diaphragm connected to a needle valve for regulating gas flow from the bulb. A reduction of can pressure causes the diaphragm to move the needle to release...

The invention is a method and apparatus for producing silicon ingots of substantially single crystallinity from metallurgical grade silicon by heating it in a crucible to above its melting point to melt it and then extracting heat from the bottom of the crucible with a heat exchanger in heat conducting relationship with the bottom, and by moving the crucible and growing crystal in a first directio...

PCT No. PCT/SE89/00534 Sec. 371 Date Apr. 5, 1991 Sec. 102(e) Date Apr. 5, 1991 PCT Filed Sep. 29, 1989 PCT Pub. No. WO90/03757 PCT Pub. Date Apr. 19, 1990.An apparatus for the wet cleaning of floors and similar surfaces by use of a round rotating scrubbing brush powered by a motor. The brush has a centrally mounted outlet for dispensing clean water onto the floor to which detergent of a suitable ...

A razor containing a shaving cream dispenser comprising a body member having a chamber disposed therein and a handle member slidably disposed thereon, the chamber containing a shaving cream dispenser disposed therein, a head member disposed at one end of the body member, and a removable cap disposed at the other end of the body member whereby the shaving cream is dispensed from the shaving cream d...

A wheel support structure for a cart, such as a wheelbarrow. The structure includes two separate wheel axes each carrying a wheel (B), Each wheel axis is mounted on a holding arm (16), which is pivotable 180.degree. about a vertical frame portion (14), whereby the pair of wheels can be shifted between inner and outer positions. Upper and lower plate members (20,21), forming bearing flange members,...

A cloth washing machine comprises a water tank (1)(2)(3) within a steaming chamber (1), and a conveyor moving cloth through the chamber and tank and including guide rollers (R1-R6)(L1-12), a stretcher acting on the cloth between at least two rollers, and a cloth vibrator (13) in the chamber outside the tank at a point where the cloth is stretched so that the vibration removes further water from th...

Objects to be examined, such as tissue or any cellular or crystalline material, e.g. semiconductor wafers, are placed in a region of confluence of two interfering coherent beams of radiation which are at the same frequency and phase and at a frequency to which the object is semi-transparent. The beams are produced by separate sources or by refraction by a Fresnel biprism or any other interferomete...