Abstract: An apparatus for detecting ice forming conditions includes a substrate having a first surface and a second surface; a sensor disposed on the first surface, the sensor being made of a material having a characteristic which varies in a known manner with respect to temperature; and a unit for monitoring the characteristic and for detecting ice forming conditions from the characteristic. A method for positioning the apparatus to detect ice forming conditions, to detect the presence of ice, and to determine an ice accretion rate is also provided.

Abstract: A method and apparatus for detecting the formation and build up of encrusted matter upon the outer surface of an electro-expulsive blanket utilizing the principles of stress and strain.

Abstract: An electro-expulsive device in the form of discrete units having a redundancy feature, minimal susceptibility to fatigue failure with a provision for transferring shock waves to and from abutting units.

Abstract: An electro-expulsive apparatus including at least two superposed, flexible flat, separately jacketed continuous ribbons of metallic electrical conductor disposed within a sealed outer jacket so that portions of said separately jacketed electrical conductors are separable within said outer jacket to create a void when said conductors are energized simultaneously by an electrical current. The disclosure also includes restoring means for returning the separated conductors to rest position and a method of expulsing solid or frangible material.

Abstract: An electro-expulsive apparatus including at least two superposed, flexible flat, separately jacketed continuous ribbons of metallic electrical conductor disposed within a sealed outer jacket so that portions of said separately jacketed electrical conductors are separable within said outer jacket to create a void when said conductors are energized simultaneously by an electrical current. The disclosure also includes the method of manufacture.

Abstract: A cordless communications system wherein transmission is made and received via magnetic lines of induction comprises a base station and at least one mobile station wherein the base station receives and transmits voice or data signals at different frequencies. A PIGLER unit is selectively disposed between the base station and mobile station so as to extend the range of the communications system.

Abstract: A cordless communications system wherein transmission is made and received via magnetic lines of induction comprises a base station and at least one mobile station wherein the base station receives and transmits voice or data signals at different frequencies. The base station employs at least two magnetic loop antennas for transmission and reception, respectively, oriented so as to provide a toroidal magnetic field which allows 360 degree transmission and reception in the planes of the antennas. The components of the at least one mobile station are mounted in an article of clothing. The mobile station is arranged in the article of clothing in such a manner as to insure a substantially constant effective coupling area with the base station antenna.