Bradley K Utts

US Patent:

47727926, Sep 20, 1988

Filed:

Jan 10, 1985

Appl. No.:

6/690430

Inventors:

Bradley K. Utts - Oakwood Village OH
Frank M. Sparacia - Solon OH
Oley D. Wimer - Hudson OH

Assignee:

Harshaw/Filtrol Partnership - Cleveland OH

International Classification:

G01T 1202

US Classification:

250366

Abstract:

A radiation detector useful for well logging and other applications contains a stabilizing pulsar device comprising a scintillator coupled to a photodetector and including a radio-active source such as an Am. sup. 241 which simultaneously emits gamma rays and low energy particles such as. alpha. or. beta. particles upon decay. The pulsar device is coupled to the radiation detector which utilizes a scintillation crystal and photodetector, and the outputs from the two photodetectors are processed through a coincident/anti-coincident gate alternately to stabilize the gamma rays or to read the environmentally induced radiation.

US Patent:

46581413, Apr 14, 1987

Filed:

Apr 3, 1984

Appl. No.:

6/596479

Inventors:

Michael C. Wilt - Solon OH
Bradley K. Utts - Oakwood Village OH
Michael L. Toth - Aurora OH

Assignee:

Harshaw/Filtrol Partnership - Cleveland OH

International Classification:

G01T 120

US Classification:

250361R

Abstract:

Scintillators, and more particularly inorganic scintillation crystals such as cadmium tungstate, bismuth germanate, barium fluoride and calcium fluoride are coated with successive coatings of particulate materials such as barium sulfate and titanium dioxide to provide a highly reflective surface layer capable of providing internal reflection of scintillation events in the region of 200-700 nm. The reflective surface enhances the pulse height and resolution of the scintillator when coupled to a suitable detector such as a photomultiplier tube or a silicon photodiode.

US Patent:

45334897, Aug 6, 1985

Filed:

Dec 7, 1983

Appl. No.:

6/559150

Inventors:

Bradley K. Utts - Oakwood Village OH
Oley D. Wimer - Hudson OH

Assignee:

Harshaw/Filtrol Partnership - Cleveland OH

International Classification:

C09K 1106

US Classification:

25230117

Abstract:

A light-reflective, flowable and curable composition is described which comprises a resin containing light-reflective solid particles in an amount and of average particle size sufficient to provide the desired light reflectance/transmittance characteristics to the cured composition. Preferably, the composition is self-leveling, and the solid particles may be particles of magnesium oxide, barium sulfate, aluminum oxide or mixtures thereof. The compositions of the invention are useful as reflective coatings in various applications such as for radiation detector devices including scintillator crystals.

US Patent:

46768173, Jun 30, 1987

Filed:

Aug 25, 1986

Appl. No.:

6/899831

Inventors:

Ramesh C. Tailor - Bedford Hts. OH
Bradley K. Utts - South Russell OH

Assignee:

Harshaw/Filtrol Partnership - Cleveland OH

International Classification:

C03C 2702

US Classification:

65 43

Abstract:

A rugged scintillation detector uses a hermetically sealed window assembly welded or otherwise bonded to the detector housing. A method and apparatus useful in forming a reproducible hermetic seal between the glass and an annular metal retaining ring is described. The glass and ring are chosen so that the ring diameter is slightly larger than that of the glass at room temperature. A thin layer of frit at the interface ensures a very tight mechanical seal, and a surface layer of chromium oxide on the ring ensures a secure chemical bond. The assembly device uses pressure and counterpressure to uniformly and reproducibly assemble the glass window into the retainer ring at elevated temperatures.