Abstract: For arc welding a sleeve 3 to a workpiece surface 2, a sleeve holder 1 is surrounded by a field-former unit which contains a magnet coil 4, a magnetic flux return member 6 and a field former 7. A magnetic field is generated with a field component extending radially to the sleeve 3 within the welding gap to set the arc in rotation. To ensure a constant magnetic flux, the field-former unit, in particular its magnet coil 4, is cooled by a temperature-controlled cooling medium circulated through the welding head.

Abstract: Comparable values for the heights of the individual jumps in a series of multiple jumps can be achieved, if defined initial conditions for first and second successive integrations of measured vertical forces are given for each individual jump. The initial condition for the first integration is taken as a zero velocity in the middle of the flight time interval for each individual jump. For every second integration, as initial condition for the jump height, a constant initial height is taken. This is a characteristic value of the test person.

Abstract: A casket shell comprises an elongated inner box and an elongated outer box. The inner box is congruently disposed in the interior region of the outer box and a core is sandwiched between the inner and outer boxes. The core includes a top surface attached to the inner box and a bottom surface attached to the outer box. The core can be made form a closed-celled material or a honeycomb material having a plurality of interconnected cylinders. Both inner and outer boxes are foldable to a generally planar configuration to minimize the volume during shipment. A casket shell in accordance with the present invention can also include a plurality of panels, each panel includes a core having a top surface and a bottom surface, first and second stabilizing surface element attached to the bottom and top surfaces, respectively. The panels connected together by a plurality of connectors to define the casket shell.

Abstract: An integrally molded compression ring for exerting an outwardly, radially directed force on an inner surface of a gasket to compress the gasket into sealing engagement with a wall of an opening. The compression ring is made from a one-piece body or strip of resiliently flexible material that has a substantially continuous and uninterrupted exterior circumferential surface. Lugs formed on an interior portion of the strip cooperate with a force expansion unit to move the ring into an expanded position. A recess may also be provided in one end of the strip for cooperating with the force expansion unit. Projections integrally molded on an interior portion of the strip and on an exterior portion adjacent an end of the strip engage one another to lock the ring in an expanded position. Guiding structure may be formed on the strip that prevent lateral movement of the ends of the strip relative to one another when the strip is formed into a ring.