Abstract: A contact spring, suitable for use in a variable resistance device having a resistance strip and at least one collector strip adjacent the resistance strip. The contact spring is formed in a unitary construction from a single piece of sheet metal and includes electrically conductive cantilever spring members which depend from a base member and are adapted for sliding electrical contact with the resistance and collector strips. Stiffly flexible, resilient means, preferably in the form of additional cantilever spring members disposed in cruciform relation to the contact spring members, depend from the base member to back up each of the contact spring members by engaging an intermediate portion thereof to retard flexing of the contact spring members toward the base member. The resulting contact spring is quite simple in construction, yet produces a substantially greater contact force with the resistance and collector strips than is achieved by simple cantilever contact spring arms.

Abstract: A pressure transducer having a substantially linear output signal with respect to a given phenomenon of interest, which in turn is a non-linear function of a pressure differential. An interior chamber in a housing is divided into compartments by a thin, flexible, magnetically permeable diaphragm. Stationary reactance elements are positioned on opposite sides of the diaphragm at approximate gap distances therefrom (with the diaphragm unflexed) of from 0.25 mm to 4.0 mm for one element and from 0.05 mm to 0.8 mm for the other, the ratio of the gap for one element to the gap for the other element being at least 2:1. The diaphragm flexes when a pressure differential representing the phenomenon of interest is applied across it, and thereby changes the reactive coupling with each of the reactance elements.

Abstract: A method of forming an electrical network package in which a B-stage thermosetting adhesive material is sandwiched between and adheres together a substrate bearing a network of electric circuit elements, and a protective superstrate. The component package is first heated sufficiently to initiate the formation of the adhesive into a gel. The package may then be cooled, and is momentarily compressed in order to flow the adhesive material into sealing relation with the electric network and to inhibit relative slippage between the substrate and superstrate followed by further heating to fully cure the adhesive.Except for the momentary compression, the entire curing sequence is performed without the application of external pressures, thereby considerably simplifying the requisite machinery. The method is adaptable to mass production techniques by employing a single continuous adhesive tape and lead frame in connection with a multiplicity of substrates.