1
Arthur R Nelson: Fiber optic sensors for simultaneously detecting different parameters in a single sensing tip. Aetna Telecommunications Laboratories, Weingarten Schurgin Gagnebin & Hayes, June 11, 1985: US04523092 (55 worldwide citation)

A fiber optic sensor for sensing pressure, temperature, voltage and other environmental parameters. A fiber is terminated in a series of semiconductor layers, each absorbing light as a function of the sensed parameters at a different wavelength. Light is transmitted down the fiber with plural freque ...


2
Kenneth K Kulas, Arthur R Nelson Jr, Jesse G Draughon: Rolling cargo apparatus. George A Bode, May 7, 1996: US05513941 (33 worldwide citation)

This invention pertains to cargo transportation, and more particularly to an apparatus that facilitates loading and unloading of cargo from a vehicle. In accordance with the present invention, a retractable bed for vehicles is provided that is simple in design, can be adapted to different vehicle ap ...


3
Arthur R Nelson, Glenn R Elion: Optical accelerometer. ADC Fiber Optics Corporation, Weingarten Schurgin Gagnebin & Hayes, February 4, 1986: US04567771 (26 worldwide citation)

A wide bandwidth, high sensitivity optical accelerometer having a lever arm to amplify the mechanical displacement of the accelerometer mass element. The optical accelerometer includes a high resonant-frequency spring-mass system, wherein the acceleration forces up to several hundred Hz cause a line ...


4
Robert R Boldt, Arthur R Nelson: Bearing and motor temperature monitor. Dickey john Corporation, Trexler Bushnell & Wolters, July 20, 1982: US04340886 (25 worldwide citation)

A system for monitoring the temperature of a plurality of bearings and motors, for example in a grain elevator, includes a plurality of sensors associated with the respective bearings and motors whose temperatures are to be monitored. A first circuit energizes a display for providing a readout of th ...


5
Arthur R Nelson: Fiber optic mass sensor. Aetna Telecommunications Laboratories, Weingarten Schurgin Gagnebin & Hayes, January 15, 1985: US04493212 (23 worldwide citation)

An optical sensing system for detecting a physical parameter such as acceleration, temperature or pressure through parameter induced motion of an optical element in a fiber optic path. The motion of the optical element varies the light transmission through the path in which the optical element defin ...


6
Arthur R Nelson: Optical temperature sensor using photoelastic waveguides. Sperry Corporation, Arnold L Albin, July 12, 1988: US04756627 (19 worldwide citation)

An integrated-optic waveguide apparatus uses a photoelastic substrate for sensing temperature changes. Optical channels are formed in a photoelastic crystal substrate by depositing film stripes thereon to cause stress-induced changes in the relative refractive index responsive to changes in the subs ...


7
Arthur R Nelson: Photoelastic effect optical waveguides. Sperry Corporation, Howard P Terry, Arnold L Albin, December 31, 1985: US04561718 (18 worldwide citation)

An optical waveguide apparatus provides for single-mode and multimode switching or modulation of light wave energy with reduced bias voltages. Optical channels are formed in a crystal substrate by depositing film stripes thereon to cause stress-induced changes in the relative refractive index. Coupl ...


8
Donald H McMahon, Arthur R Nelson: Optical internal reflectance switchable coupler. Sperry Rand Corporation, Howard P Terry, Seymour Levine, January 1, 1980: US04181399 (12 worldwide citation)

An apparatus is described for multimode electro-optic switching with reduced switching voltages. A main optical channel is formed by providing a guiding electrode on an electro-optic substrate which is bounded on either side by barrier electrodes to which voltages are applied that possess polarities ...


9
Lane Daniel Dicken, Arthur R Nelson, Dennis Eugene Lund Jr, Daniel James Belk: Machined spring with integral retainer for closed cycle cryogenic coolers. Carleton Life Support Systems, Katherine H McGuire, Woods Oviatt Gilman, March 6, 2012: US08127560 (11 worldwide citation)

A retainer and spring with threaded end are machined from a single piece of material for threading to a piston in a closed cycle cryogenic cooler. Since the machined retainer and spring are a unitary part, they cannot rub against each other during operation of the piston which reduces debris generat ...


10
Donald H McMahon, Arthur R Nelson: Multimode optical waveguide device with non-normal butt coupling of fiber to electro-optic planar waveguide. Sperry Rand Corporation, Howard P Terry, Seymour Levine, June 13, 1978: US04094579 (11 worldwide citation)

A structure for electro-optic channeling of multimode light radiated from multimode fiber optic waveguides is disclosed. The light is channeled in a planar optic waveguide comprised of a high index electro-optic material to which the fiber optic waveguide is non-normal butt coupled to achieve higher ...