Abstract: A heat transfer cap assembly for use with a dispensing canister containing a pressurized product, such as shaving gel. The cap assembly defines a volume for retaining hot tap water to heat gel in a thermal conductor forming a conduit between a nozzle adaptor and an outlet in the side of the cap assembly. When the nozzle is released, the conduit moves out of alignment with the outlet so as to block any ‘drool’ of the gel remaining in the conduit during later expansion. The outer cap is rotatable to a lock position to disallow activation of the nozzle and to further block the outlet.

Abstract: A heat transfer cap assembly for use with a dispensing canister containing a pressurized product, such as shaving gel. The cap assembly defines a volume for retaining hot tap water to heat gel in a thermal conductor forming a conduit between a nozzle adaptor and an outlet in the side of the cap assembly. When the nozzle is released, the conduit moves out of alignment with the outlet so as to block any ‘drool’ of the gel remaining in the conduit during later expansion. The outer cap is rotatable to a lock position to disallow activation of the nozzle and to further block the outlet.

Abstract: An n.times.m wideband RF switching matrix constructed from modules which are interconnected by simple series paths. As many modules as required can be juxtaposed to form switching matrices of any order. Each module includes n inputs and a different lumped element directional coupler connected to each input, each directional coupler having a coupled output. Each module further includes a conductor coupled to a matrix output. The coupled outputs of the directional couplers on a given module are connected through single-pole, single-throw switches to the conductor. The direct outputs of the directional couplers are coupled to the inputs of the n directional couplers on the next module in the series.

Abstract: A closed loop operational amplifier circuit for providing a constant current in the closed loop for generating a precision constant current through an unknown resistance for measuring the resultant voltage drop across the resistance. The closed loop circuit having a compliance circuit with a high voltage diode for preventing damage to a transistor in the compliance circuit in one polarity direction and a current limiting circuit including the transistor for preventing damage to the transistor from high voltage in the opposite polarity direction, and a voltage comparison circuit responsive to a high voltage in the opposite direction for reverse biasing the high voltage transistor to prevent it from entering the secondary breakdown mode.

Abstract: A double break, trip free circuit breaker is disclosed which is compensated for variations in ambient temperature. A biased rocker arm carries a contact bridging bar at one end and engages a heater/bimetal or electromagnetic back at the other. A segmented reset plunger allows for a manual trip capability in addition to circuit breaking even when the plunger is held in the reset position. High current handling capabilities result from the separating of the heater/bimetal circuit from the main current flow path.