Abstract: A method and apparatus used in the context of a first and a second communications network, wherein the second communications network is overlaid upon the first communications network. The invention generates and utilizes a number of flags and indicators to determine which channel, from among a plurality of shared channels assignable to a first communications network (e.g., an AMPS network) and a second communications network (e.g., a CDPD network), will be used next for communicating information by the second network (e.g., a CDPD information). The invention provides a means for generating an ordered Idle.sub.-- Channel list. The Idle.sub.-- Channel list includes each assignable channel that is not currently used by the first or second communications network. In one embodiment of the present invention, the order of the channels in the Idle.sub.-- Channel list at any given time determines the order of the channels to be selected for transmission of a signal by the second communications network.

Abstract: A battery charging device is used in charging a rechargeable battery load and is to be connected to an external dc power source. The battery charging device has a current stabilizer, which serially interconnects the power source and the battery load and which includes at least one posistor device, and a thermal circuit breaker, which is connected to the battery load and which breaks electrical connection between the battery load and the power source when the temperature of the battery load has risen to a predetermined level which indicates that the battery load has been fully recharged.

Abstract: A muscle relaxing device for relieving musculo-skeletal tension within a person's back, neck, shoulders, and feet developed from daily activities. The device includes an inclined ramp with a pair of curved projections at its upper end. The projections are for applying pressure to the thoracic area of a person'back. Adjustable pins extend outwardly from the ramped surface and can be used to relieve specific points of pain within a person's neck and feet. A pair of curved levers extend laterally of said ramp and may be pivoted downwardly to apply pressure to a person's shoulders and relieve musculo-skeletal tension within the top of the shoulder area. The entire device is compact and portable. It may be used comfortably at home or anywhere else.

Abstract: A contoured pillow is provided which is designed to accommodate a person sleeping in the supine position or in a side position. The pillow includes a curved ridge along one edge of the pillow to support the neck. The ridge ends in an elliptical depression within the center of the pillow to support the back of a person's head. The elliptical depression allows a person's head a freedom of movement of 45.degree. from either side of its normal vertical position and allows bending of the neck to a certain degree. Along the sides of the depression the pillow is of a greater dimension to support the head when resting on the side of the head. The pillow further includes longitudinal grooves within the side regions of the pillow to prevent a person's ear from being overly compressed against the pillow when resting on one's side. The pillow is of a conventional size and shape and can be used with standard pillow cases, standard sized beds, etc.