Glenn F Dorsey, 771512 Highland Cir, Blacksburg, VA 24060

6437656, Aug 20, 2002

Oct 25, 2000

09/696063

Preston L. Guynn - Penn Laird VA
Glenn F. Dorsey - Blacksburg VA
Lee E. Barker - Christiansburg VA

Electro-Tec Corp. - Blacksburg VA

H01P 106

333 24R, 333261

A conductive slip ring system functions to transfer information electrically between a moving frame and a stationary frame. The conductive slip ring system includes a conductive transmission line and a conductive probe. The conductive transmission line is attached to the stationary frame or the moving frame. The conductive transmission line includes a first portion and a second portion. The first portion includes a first end and a second end. The first end of the first portion is coupled to a first terminator. The second end of the first portion is coupled to a signal source through a first reflection path impedance matching resistor. The second portion includes a first end and a second end. The first end of the second portion is coupled to a second terminator and the second end of the second portion is coupled to the signal source through a second reflection path impedance matching resistor. The second end of the first portion and the second end of the second portion are coupled together by a third reflection path impedance matching resistor.

4326769, Apr 27, 1982

Apr 21, 1980

6/142246

Glenn F. Dorsey - Blacksburg VA
James C. Hassall - Blacksburg VA

Litton Systems, Inc. - Blacksburg VA

H01R 1122
H01R 1706

339177E

A rotary coaxial assembly comprises an external and an internal socket which is lined with a conductive louvered band and which mates with an external and an internal pin. The fit between the sockets and the pins are such that a first coaxial cable which is attached to the external and internal sockets may rotate as a unit with respect to a second coaxial cable which is attached to the external and the internal pins.

4398791, Aug 16, 1983

Feb 9, 1981

6/233002

Glenn F. Dorsey - Blacksburg VA

Litton Systems, Inc. - Blackburg VA

G02B 514

350 9618

A single channel optical slip ring assembly comprising first and second optic fibers, a first lens optically coupled to one end of the first optic fiber for collimating a light signal into a parallel light beam having a selected diameter substantially larger than the first and second optic fiber, a second lens optically coupled to one end of the second optic fiber for focusing a collimated light beam having the selected larger diameter into the second fiber end, and means for rotatably mounting the first lens to the second lens so that the lenses are axially aligned along the axis of rotation and are separated by a selected gap for axially transmitting a collimated light signal therebetween whereby the first and second fibers are optically coupled during relative rotation.

4373779, Feb 15, 1983

Nov 7, 1980

6/204763

Glenn F. Dorsey - Blacksburg VA

Litton Systems, Inc. - Blacksburg VA

G02B 514

350 9621

A single channel optical slip ring assembly comprising a hollow rotor shaft selectively dimensioned for receiving a fiber optic cable, a rotor bushing mounted in the rotor shaft and having an axial bore for receiving an optic fiber of a fiber optic cable, a stator cylindrical member selectively dimensioned for receiving a fiber optic cable, and having on one end an axially extending collar, a stator bushing mounted within the stator proximate the collar having an axial bore for receiving an optic fiber in each end thereof, means for rotatably mounting the bushing end of the rotor shaft within the collar of the stator cylindrical member so that the rotor bushing bore and the stator bushing bore are aligned along the axis of rotation and the bushings are separated by a selected gap, a gauging bore in the stator bushing which orthogonally intersects its axial bore, means in the stator cylindrical member for permitting access to the gauging bore, a stator fiber optic cable in the stator cylindrical member having an exposed length of optic fiber extending into the stator bushing bore to a selected gauged location within the gauging bore, and a rotor fiber optic cable in the rotor shaft having an exposed length of optic fiber passing through the rotor bushing bore, across the gap, and into the stator bushing bore to a selected gauged location spaced from the stator optic fiber within the gauging bore, whereby the rotor optic fiber rotates within the stator bushing and the fiber ends are maintained spaced from one another and in axial alignment thereby.

6246810, Jun 12, 2001

Jun 16, 1999

9/333549

Michael H. Harris - Blacksburg VA
Glenn F. Dorsey - Blacksburg VA
Lee E. Barker - Christiansburg VA
Linda W. Vick - Blacksburg VA

Electro-Tec Corp. - Blacksburg VA

G02B 626

385 26

An optical slip ring system provides for the transfer of information between a rotating frame and a stationary frame. The optical slip ring system includes a modulated light source, an optical fiber ring for receiving modulated light from the modulated light source and a signal conditioner. The modulated light source is attached to either the rotating frame or the stationary frame. The optical fiber ring is attached to the opposite frame. The optical fiber ring includes a first optical fiber and a second optical fiber. The first and second optical fibers each include a first and second end. The first end of the first optical fiber is coupled to a first terminator and the second end of the first optical fiber is coupled to a detector. The first end of the second optical fiber is coupled to a second terminator and the second end of the second optical fiber is coupled to the detector. The signal conditioner is coupled to the detector and restores data edges of the transferred information using an external clock.