Eaton Corporation

Francis Christopher Edrozo

Mark Allan Juds

Mary Jo Johnson Vander Heiden

Engelbert Hetzmannseder

Erik Dannel Taylor

Peter J Theisen

Edward Louis Wellner

Richard Walter Hirthe

Steven R Schachameyer

Paul Graham Slade

Benjamin Alex Rosenkrans

Mark H Polczynski

Lian Q Zou

Peter J McGinnis

Paul G Rops

Francois Jean Machand

A vacuum arc interrupter that includes a vacuum chamber assembly and a pressure chamber assembly. The vacuum chamber assembly includes a first, fixed contact disposed within the vacuum chamber and a second, movable contact disposed within the vacuum chamber. A rod is coupled to, and in electrical communication with, the second contact. The rod is structured to move between a first position wherein the second contact is spaced from the first contact and a second position where the first and second contacts are in electrical communication with each other. The pressure chamber assembly has a gas generation device and a cylindrical barrel defining a pressure chamber with a first end and a second end. The barrel second end has an opening. A piston assembly is disposed in the pressure chamber and coupled to the rod, which passes through the second, open end. The gas generation device is coupled to the pressure chamber assembly and in fluid communication with the barrel and the piston assembly. Upon generation of a gas by the gas generation device, the piston moves within the barrel causing the rod to move from the first position to the second position.

Vacuum arc interrupter actuated by a gas generated driving force

A vacuum arc interrupter that includes a vacuum chamber assembly having a first conductor and a pressure chamber assembly having a second metal conductor, with an opening, and a bullet assembly. The first conductor is coupled to a power line and the second conductor is coupled to a ground. The bullet assembly has a metal lance structured to engage the opening. The lance is shaped to create an arc when engaging the opening so that the second conductor and the lance are welded together.

Vacuum arc interrupter having a tapered conducting bullet assembly

A vacuum arc interrupter that includes a vacuum chamber assembly and a pressure chamber assembly. The vacuum chamber assembly has a first conductor coupled to a power line, a non-conductive housing and a seal cup. The pressure chamber assembly has a second conductor coupled to a ground, a pressure chamber and a bullet assembly. The pressure chamber assembly is disposed adjacent to the vacuum chamber assembly. The bullet assembly is disposed in the pressure chamber and is structured to move between a first position and a second position. The bullet assembly has a metal lance with a blade portion. The blade portion is structured to puncture the seal cup.

Blade tip for puncturing cupro-nickel seal cup

A method for real time monitoring fluid in a vessel with a probe having a pair of electrodes immersed in the fluid. The disclosed probe has the electrodes arranged helically on a rod, sized and configured for insertion in an engine dipstick hole. Preferably, the probe has spiral electrode winding up regions different pitch to provide improved impedance response at low fractional Hertz and high (at least one Hertz) frequencies of excitation. In one version with alternating voltage the difference in current magnitude measured at the low and high frequencies is compared with stored known values for known fluid conditions and an electrical signal indicative of fluid condition is generated. Examples with engine drain oil and heavy duty transmission lubricant fluid are presented. The impedance properties measured can determine the percentage remaining useful life (RUL) of the fluid. In another version of the method the current phase shift angle is measured at the fractional Hertzian frequency; and, from known values of current phase shift angle of the fluid, at various conditions, the condition of the fluid determined. The differential current measured and the measured phase shift angle may be combined, for example, by the square of the sum of the squares procedure to provide an enhanced impedance change indicator.

Monitoring fluid condition through an aperture

Growing community of inventors

Milwaukee, WI, United States of America

Francis Christopher Edrozo