PETER S SHELLEY
Engineers in Brookfield, WI

4276493, Jun 30, 1981

Sep 10, 1979

6/073757

Saroja R. Srinivasa - Milwaukee WI
Peter S. Shelley - Brookfield WI
Robert E. Hueschen - Hales Corners WI

General Electric Company - Schenectady NY

H01J 3508

313330

A graphite target disk for a rotating anode x-ray tube is adapted for mounting it on a rotor stem in a manner which reduces the probability of the target cracking when it is subjected to high magnitude thermal and rotational shocks. The graphite disk has a counterbore in its front and rear faces which are connected with a smaller central bore so the counterbores define annular shoulders. A washer having a slot which serves as a keyway is brazed concentrically onto the shoulder of the front counterbore. The rotor stem has a threaded end which registers complementarily in the slot to effect a driving connection and the stem has a radially extending shoulder which interfaces with the shoulder in the rear counterbore. A nut on the threaded stem end secures the target to the stem.

4417144, Nov 22, 1983

Feb 23, 1981

6/236738

David M. Hoffman - New Berlin WI
Neil W. Loomis - Muskego WI
Ralph C. Ehlert - Milwaukee WI
Peter S. Shelley - Brookfield WI

General Electric Company - Milwaukee WI

G01T 122

250367

A modular solid-state detector cell which intimately associates a scintillator body with a pair of photoresponsive semiconductors so as to present on a single collimator plate all of the elements necessary for transforming incident X-radiation into a measurable electrical signal. The detector is provided with a precision slotted mounting arrangement for receiving the unit cells, and the cells when positioned within the detector assembly have the photoresponsive semiconductors enclosed within the light tight cell. The unit is adaptable to off-line testing of the separate cells for screening before assembly.

4161655, Jul 17, 1979

Nov 28, 1977

5/855532

Dennis J. Cotic - Milwaukee WI
David M. Hoffman - Milwaukee WI
Peter S. Shelley - Brookfield WI
Laurel J. Zech - Milwaukee WI

General Electric Company - Schenectady NY

G01T 118

250385

An array of electrode plates are arranged in parallel and spaced apart relationship to define ionization cells in a channel within a housing that is occupied by high pressured gas. A broad beam of x-ray photons penetrates a window in the housing and produces ionization events that result in analog signals corresponding with photon energies and intensities. Conduction of the signals from the interior to the exterior of the detector housing is accomplished with a printed circuit board assembly that is sealed between the housing and its cover.

4119853, Oct 10, 1978

Jun 9, 1977

5/804980

Peter Stephen Shelley - Brookfield WI
William Darrell Love - Waukesha WI
Barry Newell Stone - Waukesha WI

General Electric Company - Schenectady NY

H01J 3928, G01N 2152

250385

A detector for X-radiation or other ionizing radiation comprises a pair of curved metal bars lying in spaced apart parallel planes. Ceramic members are bonded to the respective bars in facing relationship. Each ceramic member has a plurality of radially extending circumferentially spaced grooves facing similar grooves in the other member. A plurality of electrode plates are held in juxtaposed and circumferentially spaced apart relationship by disposing their respective upper and lower edges in the grooves of opposed ceramic members. The faces of adjacent electrode plates define gas-filled gaps in which photoelectron-ion pairs are produced when radiation enters from the front edges of the plates. The above described assembly is disposed within a pressurized gas-filled chamber having an X-ray transmissive window adjacent the front edges of the plates. A cover encloses the chamber.