Abstract: A method for adjusting the operating gap between the actuator beam (11, 12) and the moveable contact spring (13, 14) of a piezoelectric relay to achieve a gap (gf) of a width to achieve optimum relay reliability. A fixed contact (24) upon which the contact (35) of the spring (13) rests, is mounted on a bracket (25) in turn mounted on the relay substrate (15) by a solder layer (30). The relay actuator beam (11), normally adapted to raise the spring (13) to separate the contacts, is separated from the spring (13) by an initial gap (g) and is energized by an adjust voltage (Va) of a magnitude to exert a force just equal to the spring force. The solder layer (30) is then heated to the melting point to permit the spring (13) to force bracket (25) downward and itself into contact with the beam (11). When the forces exerted by the beam (11), the fixed contact, and the spring (13) reach equilibrium, the solder layer (30) is allowed to set and the adjust voltage (Va) is removed.

Abstract: In an electric flatiron with a soleplate and central upstanding boss and having a handle having a temperature adjusting lever in the front of the handle, an improvement is provided in the temperature regulating assembly that comprises a snap action thermostat which is supported on the boss with a substantially vertically movable adjusting screw to vary the thermostat settings. An insulated cap is provided on the top of the screw and the cap has an outer splined surface. A rod is connected at one end to the temperature adjusting lever forward of the screw for rotation by lever movement for setting temperature. The rod has an offset portion at its other end loosely fitting in a driving engagement over the splined surface so the offset slides vertically over the splined surface forming a universal-like connection as the rod is rotated by the lever to turn the screw and vary the thermostat setting of the iron without undue backlash.

Abstract: A compact, low cost, snap-acting thermostatic switch which can be automatically assembled comprising a single member housing, an unrestrained snap-acting disc, a stationary contact means and a movable contact means with a transfer means attached thereto in which calibration in assembled form can be performed as a single final operation.

Abstract: A Bimetal strip, having a formed, snap-over portion is mounted within the body of a thermostat on two knife edges, each knife edge being adjacent the juncture of the formed portion with the remainder of the bimetallic strip. The combination provides for making and breaking of the circuit by the thermostat, with no creep in either direction.

Abstract: A thermostat includes a base plate supporting a switch and an ambient temperature sensing bimetal that actuates the switch. A set-point adjusting cam cooperates with the bimetal. An internally threaded bushing is supported upright on the base plate and is frictionally locked against rotation. The set-point adjusting cam is supported on a threaded shaft which screws into the bushing. The bushing is rotatable for fine calibration of the thermostat, while the threaded shaft is screwed into the bushing through an appropriate number of turns for coarse calibration.

Abstract: A thermostat construction having a first contact and a blade-carried second contact supported in a generally cube-like housing and having a bimetal snap disc carried by the housing for controlling movement of the second contact relative to the first contact in response to snapped temperature sensing conditions of the disc together with temperature setting means carried by the housing for selecting the temperature of operation of the disc for moving the second contact out of contact with the first contact whereby the generally cube-like configuration of the housing renders the thermostat construction relatively small and compact.