Abstract: A keymat for use with a mobile station. The keymat includes a web for interconnecting a plurality of keys, the web and the keys lying external to the mobile-station enclosure when the mobile station is fully assembled. Means for retaining the keymat provide for it to be held in place during normal operation but permitting it to be removed so that user may exchange it for another. A plurality of key pins extending from the keys through openings in the mobile-station external housing may, but are not necessarily exchangeable with the keymat.

Abstract: An electronic radiotelephone comprising a first housing, a second housing, and an inner housing having retaining means for retaining to the inner housing the electronic components of the radiotelephone; and first releasable attaching means for releasable attaching the first housing to the inner housing, wherein the first housing, when attached to the inner housing, is presented towards a user during operation of the radiotelephone; and second releasably attaching means for releasable attaching the second housing to the inner housing, wherein the second housing, when attached to the inner housing, faces away from the user during operation of the radiotelephone.

Abstract: An electronic radiotelephone comprising a first housing, a second housing, and an inner housing having retaining means for retaining to the inner housing the electronic components of the radiotelephone; and first releasable attaching means for releasable attaching the first housing to the inner housing, wherein the first housing, when attached to the inner housing, is presented towards a user during operation of the radiotelephone; and second releasably attaching means for releasable attaching the second housing to the inner housing, wherein the second housing, when attached to the inner housing, faces away from the user during operation of the radiotelephone.

Abstract: A battery lock for a communication unit with holding means for holding an internal battery in operating position in a battery compartment. The holding means includes features to hold, lift and release the battery in the compartment from the battery compartment. The battery compartment includes protruding parts corresponding to slots on the battery, where the protruding parts co-operates with holding means of the battery to hold the battery in the battery compartment. The holding means of the battery lock includes first protruding parts to hold the battery in the battery compartment, grips to lift and release the battery, holes to hinge the battery lock in the battery compartment, second protruding parts to lift the battery actuated by the grips and fastening means to fasten the battery lock to the battery compartment.

Abstract: The present invention discloses solventless composition suitable for application as a hot melt to a substrate, said composition comprising a mixture or alloy of resins, selected such that the averaged glass transition temperature (Tg) of the combined unreacted resins is greater than -30.degree. and less than +60.degree. C. The melt viscosity of the unreacted resins are selected so that the combined resin mix has a melt viscosity of from about 0.05 to 25 Poise when measured at 180.degree. C. and at a shear rate of 10,000 Hz.

Abstract: Method for improving the storage stability of oxalic ester chemiluminescent light system components by the addition of certain additive compounds to either the oxalic or hydrogen peroxide component or both.

Abstract: Treatment of plastic or metal containers for chemiluminescent light packages by contacting with a chlorosilane, whereby storage stability, and shelf life of fabricated chemiluminescent devices is increased.

Abstract: Method for improving the storage stability of oxalic ester chemiluminescent light system components by the addition of certain additive compounds to either the oxalic ester component or the hydrogen peroxide component or both.

Abstract: An automatic device for providing chemiluminescent light from a chemical reaction of suitable compounds in the presence of a fluorescent compound, said device being an emergency source of illumination upon failure of public utility service.