Edmond I Vinarub

US Patent:

46790292, Jul 7, 1987

Filed:

Sep 4, 1984

Appl. No.:

6/647031

Inventors:

David A. Krohn - Hamden CT
David R. Maack - Madison CT
Edmond I. Vinarub - Cheshire CT
John R. Ellison - Bethany CT

Assignee:

Eotec Corporation - West Haven CT

International Classification:

H03K 1302

US Classification:

340347P

Abstract:

An apparatus is disclosed for sensing rotational or angular position of a shaft. The apparatus incorporates two light transmission paths, each having a separate photodetector providing an electrical signal in response to the intensity of received light. The electrical signals from the photodetectors are differentially processed to obtain a signal representative of rotational position. Devices are provided in each of the light transmission paths to vary the intensity of light transmitted in the path, and these devices are mechanically coupled to the shaft so that the variations in the respective light paths are opposite. The differentially processed photodetector signals are therefore unaffected by the absolute position of the shaft but are responsive only to deviations from a reference position. Futhermore, this differentially processed signal exhibits a higher degree of linearity was heretofor obtainable. Various embodiments are disclosed for achieving this opposite variation in the respective light paths.

US Patent:

43564321, Oct 26, 1982

Filed:

Feb 25, 1981

Appl. No.:

6/238143

Inventors:

Edmond I. Vinarub - Cheshire CT

Assignee:

Exxon Research and Engineering Co. - Florham Park NJ

International Classification:

H05B 4136

US Classification:

315287

Abstract:

A solid state power switch for gas discharge lamps is disclosed which is capable of providing a bipolar signal to a lamp and which substantially eliminates losses due to switching delays of internal devices. A timing control signal of a predetermined frequency and wave shape is provided to a pair of threshold comparators, which respectively receive a first and second threshold signal such as first and second reference voltages. The first comparator produces an output signal only when the timing control signal is below the first threshold signal and the second comparator provides an output signal only when the timing control signal is above the second threshold signal. The signals from the two comparators are used to control the on time of power switches of opposite polarity. Thus, the time that the control signal is between the two thresholds represents the switching delay interval. By adjusting the two threshold signals relative to each other, a delay interval of any desired duration may be created between the turn off of one power switch and turn on of the other, thus allowing independent and precise control of switching of the power switching devices.

US Patent:

50730274, Dec 17, 1991

Filed:

May 23, 1989

Appl. No.:

7/356676

Inventors:

David A. Krohn - Hamden CT
Edmond I. Vinarub - Cheshire CT

Assignee:

3M Fiber Optic Products, Inc. - St. Paul MN

International Classification:

G02B 516

US Classification:

356373

Abstract:

Apparatus for determining the displacement or position of an object comprises a light source and a light receiver for receiving light transmitted from said light source, and a fiber optic conduit of Y-shaped configuration having the end of one arm thereof positioned adjacent said light source and the end of the other arm positioned adjacent said light receiver, said conduit arms forming a common bundle of optically conducting fibers in the base of said Y, some of which are transmitting fibers for conducting light from said light source to a surface of the object and some of which are receiving fibers for conducting light reflected from the surface of said object to said light receiver so that the conduit is normally objective to conduct light from said light source and to conduct reflective light impinging on an end face of said common bundle to said light receiver.

US Patent:

RE343455, Aug 17, 1993

Filed:

Sep 19, 1990

Appl. No.:

7/585245

Inventors:

Edmond Vinarub - Cheshire CT
Bernard J. Dolan - Winchester MA
Ralph Grabowski - Andover MA
Phillip Carvey - Bedford MA
Tamas Hetenyi - Concord MA
Randal Chinnock - North Reading MA
Kurt Zwirner - Melrose MA

Assignee:

Dolan-Jenner Industries, Inc. - Woburn MA

International Classification:

G01B 1102

US Classification:

356384

Abstract:

A target is viewed by means of a coherent fiber optic bundle comprising a two dimensional array of fibers. A one dimensional linear light detector array, fixed relative to the coherent fiber optic bundle, receives an image of the target and detects light through only a slice of the image to provide dimensional information with respect to the edges of the target. A polyfurcated bundle may view different linear dimensions of the target and allow for the use of the single linear array to detect the multiple dimensions. Electronics provide for detection of target edges by means of a curve fitting technique, computation of dimensions and control of light source intensity and exposure time. Illumination is by a noncoherent light source and a collimator positioned behind the target or by a fiber optic bundle and a light guide plate positioned to illuminate the target from the front. An air purge of the distal optics is provided from a frustoconical annulus formed between two members and from pressurized gas introduced between the annulus and the optics.

US Patent:

47721286, Sep 20, 1988

Filed:

May 7, 1986

Appl. No.:

6/860530

Inventors:

Edmond Vinarub - Cheshire CT
Bernard J. Dolan - Stoneham MA
Ralph Grabowski - Andover MA
Phillip Carvey - Bedford MA
Tamas Hetenyi - Concord MA
Randal Chinnock - North Reading MA
Kurt Zwirner - Melrose MA

Assignee:

Dolan-Jenner Industries, Inc. - Woburn MA

International Classification:

G01B 1102

US Classification:

356384

Abstract:

A target is viewed by means of a coherent fiber optic bundle comprising a two dimensional array of fibers. A one dimensional linear light detector array, fixed relative to the coherent fiber optic bundle, receives an image of the target and detects light through only a slice of the image to provide dimensional information with respect to the edges of the target. A polyfurcated bundle may view different linear dimensions of the target and allow for the use of the single linear array to detect the multiple dimensions. Electronics provide for detection of target edges by means of a curve fitting technique, computation of dimensions and control of light source intensity and exposure time. Illumination is by a noncoherent light source and a collimator positioned behind the target or by a fiber optic bundle and a light guide plate positioned to illuminate the target from the front. An air purge of the distal optics is provided from a frustoconical annulus formed between two members and from pressurized gas introduced between the annulus and the optics.

US Patent:

45008701, Feb 19, 1985

Filed:

Sep 29, 1981

Appl. No.:

6/306901

Inventors:

David A. Krohn - Hamden CT
Louis A. Buffone - Shelton CT
Edmond I. Vinarub - Cheshire CT

Assignee:

Eotec Corporation - West Haven CT

International Classification:

H03K 1302

US Classification:

340347P

Abstract:

A utility meter has a plurality of rotating shafts which have angular positions corresponding to the digits of a consumption reading. A cam is attached to that shaft which is associated with the least significant digit. The cam has a light reflecting track. Light from a light source is reflected off the track to a photodetector along an optical path which varies in length in accordance with angular cam position. Electronic circuitry is connected to the light source and photodetector and produces an output signal in digital form which has a frequency related to intensity of light incident upon the photodetector.

US Patent:

46986162, Oct 6, 1987

Filed:

Nov 26, 1986

Appl. No.:

6/935344

Inventors:

David A. Krohn - Hamden CT
David R. Maack - Madison CT
Edmond I. Vinarub - Cheshire CT
John R. Ellison - Bethany CT

Assignee:

Eotec Corp - New Haven CT

International Classification:

H03K 1302

US Classification:

340347P

Abstract:

An apparatus is disclosed for sensing rotational or angular position of a shaft. The apparatus incorporates two light transmission paths, each having a separate photodetector providing an electrical signal in response to the intensity of received light. The electrical signals from the photodetectors are differentially processed to obtain a signal representative of rotational position. Devices are provided in each of the light transmission paths to vary the intensity of light transmitted in the path, and these devices are mechanically coupled to the shaft so that the variations in the respective light paths are opposite. The differentially processed photodetector signals are therefore unaffected by the absolute position of the shaft but are responsive only to deviations from a reference position. Furthermore, this differentially processed signal exhibits a higher degree of linearity was heretofore obtainable. Various embodiments are disclosed for achieving this opposite variation in the respective light paths.