The fusing of a service connector to a main is effected by holding the main firmly in place with a clamp while the service connector is pressed against it with a press, the areas of each being fused, having previously been heated to fusion temperature. The press receives the service connector and holds it firmly while the connector's saddle and the main are brought into fusion temperature by a pair of heating platens. The heating platen for the main has a hole forming die which effects a hole in...

Workpieces fabricated from lead, or other metallic materials having substantially similar characteristics, are fusion bonded by first abutting the workpieces to define an interface therebetween, and the inserting a heated ram having a slot therein into the workpieces, at the interface, to create a localized zone of molten material about the ram and in the slot of the ram. The ram is then withdrawn, the molten material in the slot flows back into the interface, and all the molten material re-soli...

An electrical fusion heater for heating the abutting ends of two plastic pipes to be joined in a plastic pipe fusion apparatus. The heater comprises a thick circular slab of good heat conductivity metal with an outer diameter greater than the diameter of the largest pipe size to be heated, and with a central opening smaller than the smallest pipe size to be heated. A plurality of heater elements are inserted into a corresponding plurality of radial openings along the central plane of the heater ...

Workpieces fabricated from lead, or other metallic materials having substantially similar characteristics, are fusion bonded by first abutting the workpieces to define an interface therebetween, and then inserting a heated bonding tool into the workpieces, at the interface, to create a localized zone of molten material about the bonding tool. The tool is then moved, relative to the workpieces, so that the molten zone of material traverses the interface, the molten zone cools and resolidifies beh...

Human hybridomas producing a preselected human monoclonal antibody are prepared by fusing human lymphocytes with a hybrid fusion partner. The hybrid fusion partner is the result of fusing human lymphocytes with human myeloma cells at least once wherein the resulting hybrid cell is capable of being a functional human fusion partner.

A method and apparatus for fusion arc welding of adjoining workpieces including an arc supply circuit and an arrangement for selectively operating the arc supply circuit in constant-power mode.

A fusion chamber is provided with an inner energy envelope by a hollow laser beam which travels the length of the chamber. A light energy dispersion element disposed at the far end of the chamber reflects the light energy of the laser beam to the inner reflective walls of the chamber and back through the plasma.

A process for reacting an acidic compound or anhydride with an epoxy-containing compound is disclosed. In a preferred embodiment this process comprises reacting a polyepoxide having more than one vic-epoxy group with a phenol in the presence of a methylene bis(triphenylphosphonium)halide catalyst.

Apparatus for fusing cells by applying an alternating voltage across a pair of spaced-apart elongated electrodes. The electrodes form between themselves an elongated fusion chamber for receiving a suspension of cells to be fused. The electrodes have a cross-sectional shape adapted to produce an inhomogenous electric field within the fusion chamber suitable for inducing dielectrophoretic movement of suspended cells towards the electrodes and for maintaining strings or lines of two or more cells i...

The present invention relates to polyurethane fusion adhesives that are hardened by the action of moisture and which contain at least one reaction product from a component that contains NCO groups and an essentially linear hydroxypolyester, hydroxypolyether, and/or hydroxypolyetherester component. In addition, the present invention relates to a procedure for manufacturing a material that is permeable to water only in vapor form, this being in the form of a fiber material, in particular in the fo...