Mpr Teltech Ltd.

Firma J. Eberspacher

Other

Microtel Pacific Research Limited

Robert F Wilson

Deleting the onset of flooding of a surface of an ultrasonic atomizer having an ultrasonic transducer with liquid to be atomized, in particular liquid fuel in connection with heaters, wherein the natural resonance frequency of the vibrating ultrasonic transducer is monitored for changes in frequency, and a flooding signal reporting a flooded condition is produced when a drop in resonance frequency over a previously detected resonance frequency is detected whose rate of decrease exceeds a set minimum threshold.

Method and apparatus for detecting the onset of flooding of an

A rotary switch which includes a rotary actuator, a linear switch having a linear actuator and a rotary to linear translator interconnecting the rotary actuator to the linear actuator. Rotation of the rotary actuator causes the translator to move linearly and, in turn, to move the linear actuator.

Compact rotary switching assembly

A method for driving an ultrasonic transducer, intended for use in atomization of liquids, at one of its selected resonance frequencies, by tuning out the capacitance of the ultrasonic transducer by means of an inductor, by sensing the transducer current, by comparing the phases of the transducer driving voltage and the transducer current and by controlling a voltage controlled oscillator for driving the ultrasonic transducer, by means of a phase error signal such that the ultrasonic transducer is driven with a frequency at which the transducer driving voltage and the transducer current are in phase, whereby the transducer driving circuit is locked to a natural resonance frequency of the ultrasonic transducer.

Circuit arrangement for accurately and effectively driving an ultrasonic

A release mechanism for a buoyant object which includes a strap enclosing the object, an engaging mechanism for releasably engaging ends of said strap and an actuator for actuating the release of the ends of said strap in response to an increase in water pressure to a predetermined level.

Automatic release mechanism

A hydrostatic pressure sensor, one use for which is to initiate the automatic deployment of emergency marine safety equipment, when a specified depth below the water level is exceeded. The sensor uses a novel method of compensating for ambient air temperature and barometric pressure as a means of reducing the errors in depth sensing caused by changes in the above ambient conditions.

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Vancouver, Canada

Robert F Wilson