Abstract: An improved method and apparatus for attaching metal studs to a pre-finished metal shell is provided for use in the manufacture of cookware. Specifically, a metal cookware shell with a logo disposed on the bottom surface thereof is provided with a mark for indicating the location where a stud is to be welded for attachment of the handle. An apparatus and method are provided for detecting the location of the mark, milling the mark and exterior finish off the shell, welding the stud to the milled portion of the shell and testing the strength of the stud/shell weld, all with a minimum contribution of manual labor.

Abstract: A method of forming enclosures for microwave and hybrid devices and the enclosure itself wherein the metals to be joined are thin (i.e., less than 40 mils thick) and/or thick (up to several inches) and wherein metallurgical hermetic bonds are provided between adjacent metals which are generally difficult to bond to each other and may be bonded by a select number of bonding processes.

Abstract: A method of forming enclosures for microwave and hybrid devices and the enclosure itself wherein the metals to be joined are thin (i.e., less than 40 mils thick) and/or thick (up to several inches) and wherein metallurgical hermetic bonds are provided between adjacent metals which are generally difficult to bond to each other and may be bonded by a select number of bonding processes.

Abstract: An electric switch is shown which is responsive separately to two different conditions, i.e. temperature and pressure. The switch includes a temperature sensing disc and a pressure sensing disc both coupled through several alternate motion transfer arrangements to the movable electrical contact of the switch. Several structures are shown for mounting a switch on a surface so that the pressure sensing disc is exposed to fluid pressure and the temperature sensing disc is thermally coupled to the surface.

Abstract: A starting circuit for single phase electric motors including both split-phase and capacitor start motors includes a gate controlled solid state switch serially connected to the start winding of the motor. Rectified reference pulses from a pulse transformer are generated to turn on a first transistor to provide gating current for the solid state switch. Initially, when the motor is energized at zero rpm, the pulses are received at the switch after the start winding current passes through the zero current level to gate the switch to conduct each half cycle and energize the start winding however as the motor speeds up, the pulses are received earlier and earlier relative to the start winding current zero cross over until at a selected speed the pulses are received at the switch prior to the start winding current zero cross over with the result that the switch is no longer gated conductive. When this occurs the voltage across the switch goes high.