ROBERT W BELL
Electrician in Salem, NH

License number
Massachusetts 51668
Issued Date
Sep 22, 2003
Expiration Date
Jul 31, 2013
Type
Journeyman Electrician
Address
Address
Salem, NH 03079
LicenseFiles verified this license of Nov 24, 2016 at the Mass.gov - Consumer Affairs and Business Regulation.

Personal information

See more information about ROBERT W BELL at radaris.com
Name
Address
Phone
Robert F Bell, age 86
270 River Rd, Epping, NH 03042
(603) 679-8410
Robert F Bell, age 86
270 River Rd, Epping, NH 03042

Professional information

See more information about ROBERT W BELL at trustoria.com
Robert Bell Photo 1
Robert Bell - Salem, NH

Robert Bell - Salem, NH
Work:
interstate electrical services
Journeyman Electrician Piquette & Howard Electric - Plaistow, NH
Journeyman Wayne J. Griffin Electric - Holliston, MA
Electrical Apprentice
Skills:
pipe bending, gear installation and wire pulling

Robert Bell Photo 2
Radiation Detector With Built-In Test Capability

Radiation Detector With Built-In Test Capability

US Patent:
4544843, Oct 1, 1985
Filed:
Jan 28, 1983
Appl. No.:
6/461896
Inventors:
Mark T. Kern - Goleta CA
Robert A. Bell - Salem NH
Max J. Riedl - Santa Barbara CA
Assignee:
Santa Barbara Research Center - Goleta CA
International Classification:
H01J 502
US Classification:
250239
Abstract:
A device having a light emitter coupled to direct light to a portion of a photodetector to provide Built-In Test Equipment (BITE) capability for an optical sensor. A light emitting diode and a photodiode are mounted side by side on the upper surface of a conventional header with suitable electrical connections bonded thereto. A prismatic light bridge member overlies the light emitting diode and extends to cover a portion of one corner of the photodetector. This member serves as a light conduit, directing virtually all of the light from the emitter to the detector by virtue of the near total internal reflection of the surfaces of the light conduit member. An outer enclosure having a transparent glass window serves to seal and protect the respective elements while permitting external radiation to reach the photodetector. Alternative embodiments provide for coupling of light from a single emitter or a plurality of emitters to a single associated photodetector.

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