THOMAS P WELDON
Engineers in Pittsburgh, PA

4717873, Jan 5, 1988

Nov 12, 1985

6/797332

Walter J. Carr - Wilkins Township, Allegheny County PA
Robert C. Miller - Penn Hills PA
John B. Lipchak - Forest Hills PA
Thomas P. Weldon - Pleasant Hills PA

Westinghouse Electric Corp. - Pittsburgh PA

G01L 914, G01B 714, G21C 1700, G01R 3304

324207

A magnetic displacement transducer system for measuring the movement of a member includes an elongated permanent magnet which is mechanically coupled to the member so that the magnet moves parallel to its axis. A magnet-position sensor assembly, which includes at least one magnetometer having an elongated ferromagnetic core with a coil wrapped around it, is positioned adjacent the magnet so that the axis of the core and coil intersects the axis of the magnet at right angles. A pair of wires carry a sinusoidal excitation current to the assembly, convey the second harmonic from the assembly, and deliver a DC biasing current to the assembly in order to null the component of the permanent magnet's field that is perpendicular to the axis of the magnet. The value of the DC biasing current is measured to obtain the displacement of the member. The transducer may be employed in a differential pressure gauge for use within the containment building of a nuclear power plant, in which case it is desirable to know the temperature at the gauge.

5038611, Aug 13, 1991

Dec 20, 1989

7/453736

Thomas P. Weldon - Pleasant Hills PA
James L. McShane - Churchill Boro PA

Westinghouse Electric Corp. - Pittsburgh PA

G01F 2328, G01N 900

73290V

A system for providing a temperature compensated measurement indicative of the height of a fluid in a vessel includes an acoustic waveguide in fluid communication with the vessel. A reference target is positioned within the waveguide. Ultrasonic signals are produced in the fluid and a timer measures a first transit time representative of the time for the ultrasonic signals to travel to and from the target and a second transit time representative of the time for the ultrasonic signals to travel to and from the surface of a fluid in the waveguide. A circuit calculates the height of the fluid in the waveguide from the first and second transit times. Another circuit determines the density of the fluid in the waveguide from the first transit time and normalizes the calculated height of the fluid based on the density of the fluid such that the normalized height is indicative of the height of the fluid in the vessel.

2012023, Sep 20, 2012

Mar 9, 2012

13/416181

Kevin Weldon - Greensburg PA, US
Thomas Weldon - Pittsburgh PA, US

F26B 19/00, F26B 3/02

34513, 34 86

An improvement in a laundry dryer system using recovered waste heat from the hot air exhaust of the dryer to transfer that heat to the incoming ambient fresh air. A home laundry dryer in which both the fresh air entering a laundry drum and the air exhausted from the drum pass through thermal recovery ducting. The dryer heat recovery system has concentric ducting including a high temperature passage through which the exhaust air flows and a separate low temperature passage through which the entering air flows. Heat from the exhausted air is transferred from the high temperature passage to the entering air in the low temperature passage. This heat transfer lowers the energy required to raise the entering air to a desired drying temperature. The dryer ducting is designed to have an outer diameter equivalent to standard size ducting on home dryers.