Other

Halitec Industries Corp.

Hydro Flame Corporation

Richard W Slamka

Franco Consadori

Harold R Davis

Gerry C Wolter

Konrad Colbow

Roger G Dower

Larry J Honn

Lechoslaw K Urbaniak

Robert W Acres

Frederick M Orringer, Jr

Nader Riahi

Andrew N Donham

Gas is supplied to a gas flow modulator having a tubular member with a gas flow passage extending through the tubular member. A slide member in the gas flow passage is axially slidable longitudinally along the passage. Springs within the tubular member in opposite directions on the slide member so as to resiliently bias the slide member towards a predetermined position in the gas flow passage. A flow constrictor means is fixedly positioned within the gas flow passage for constricting gas flow along the gas flow passage, the slide member and the flow constrictor means being shaped to cease the flow of gas along the gas flow passage upon displacement of the slide member in a first direction from the predetermined position by means of an electromagnetic induction coil extending around the exterior of the tubular member and in cooperation with a magnetic material forming at least part of the slide member or secured thereto. The gas flow modulator may be used in a water heating system where a temperature sensing means senses water temperature to in turn control a power source to the induction coil so as to regulate the burning of gas at a gas burner in communication with the gas flow modulator. The slide member is prevented from sticking in the tubular member by rectifying or modulating the power signal to the induction coil which causes the slide member to vibrate.

Gas flow modulator

An apparatus accurately controls output water temperature of an instantaneous water heater to maintain a desired outlet temperature. A first electronic sensing device senses a flow of water through the heater, and an ignition sequence commences when flow has been detected. A second electronic sensing device senses an outlet water temperature of the heater, and a third electronic sensing device senses a midway water temperature of the heater. The burner output or outputs are controlled to maintain the desired outlet temperature, based on changes in water flow and incoming water temperature. With multiple burners, the burner outputs are staged to accurately control the output water temperature of the instantaneous water heater to maintain the desired outlet temperature.

System and method for controlling outlet water temperature of an

A gas sensing device has a sampling chamber for containing a gas to be sensed, with a gas sensing element with the chamber for providing an output signal which varies in response to the presence of the gas in the chamber. An orifice, or other restriction, permits gas flow between the interior and the exterior of the chamber and a pump, e.g. in the form of a heater, displaces a sample of the gas through the restriction into the interior of the chamber for sensing by the sensing element and subsequently displaces gas from the interior to the exterior of the chamber.

Gas sensor

Apparatus is disclosed for detecting irregularities or flaws in seams such as the seams of cans. The apparatus includes means for irradiating the surface of the seam to produce reflected radiation signals, a plurality of radiation sensors, each having a selected field of view of the surface, and each producing sensor output signals dependent on reflected radiation signals received within such field of view. A signal processing means receives sensor output signals for a succession of fields of view along the longitudinal length of the seam and derives therefrom signal data representing a dimensional feature of the seam. Signl comparison means compares such derived data with signal data representing an acceptable dimensional limit and produces a rejection signal in the event that the dimensional feature does not fall within the limit. Means for classifying the nature of an irregularity is also disclosed, as is transport means for the movement of seams though the field of view of the sensors.

Apparatus for inspecting can seams and the like

Growing community of inventors

Vancouver, Canada

Richard W Slamka