Eric T Carlen Deceased5415 Peregrine Crest Cir, Roanoke, VA 24018

7971487, Jul 5, 2011

May 2, 2008

12/114675

Eric T. Carlen - Roanoke VA, US
David G. Roberson - Christiansburg VA, US
Hiep T. Bui - Roanoke VA, US

Carlen Controls, Inc. - Roanoke VA

G01B 7/16

73760

A linear position transducer reliably and wirelessly tracks rapid motion. The transducer includes a scale, a control head, and a wirelessly-powered read head disposed proximate to the scale. The read head is configured to sense movement between the scale and the read head and to wirelessly communicate position data to the control head. The control head can include a wireless data receiver to receive position data from the read head, an output data driver to communicate with an external device, and a microcontroller to coordinate a data transfer between the wireless data receiver and the output data driver. In addition, the read head can include a wireless data transmitter to transmit position data to the control head, a linear position sensor to sense position along the scale, and a microcontroller to calculate a position measurement from the scale. The microcontroller in the read head can also coordinate a data transfer between the wireless data transmitter and the control head. To provide a complete wireless solution, the linear position transducer also includes a power system to wirelessly transfer energy from the control head to the read head.

5160886, Nov 3, 1992

Feb 14, 1991

7/655308

Eric T. Carlen - Roanoke VA

Carlen Controls, Inc. - Roanoke VA

G01B 730
G01B 714
G05D 300
H03M 148

32420716

A simplified magnetic resolver for measurement of rotary or linear position which comprises a permanent magnet rotor and two pairs of sensing coils. The resolver produces sine and cosine outputs compatible with known resolver-to-digital converters.

5272927, Dec 28, 1993

Jun 3, 1992

7/892312

Eric T. Carlen - Roanoke VA

Carlen Controls, Inc. - Roanoke VA

G01D 702

738661

An anti-backlash spline coupling configured to have the identical rotation as a spline shaft with which it is engaged. The coupling includes two plates and tensioning means which bias the rotary movement of each plate against the other. The coupling may be used in a position measuring system to accurately measure the rotation of a workpiece which is subject to both vertical and rotary motion.

6151793, Nov 28, 2000

Dec 10, 1997

8/988389

Eric T. Carlen - Roanoke VA

Carlen Controls, Inc. - Roanoke VA

G01B 525

33645

A rotational alignment device centers a shaft-mounted transducer on a rotating shaft. The alignment device includes a moveable base that is configured to receive the shaft-mounted transducer through a coupling device; a mounting base that connects to the rotating shaft; and a radial alignment assembly which connects the moveable base to the mounting base in a manner whereby the alignment error between the transducer and the rotating shaft can be corrected. The alignment error is corrected by making polar-coordinate type adjustments (i. e. , correcting angular error and radial offset error) rather than traditional X-Y coordinate type adjustments.

4232255, Nov 4, 1980

Nov 6, 1978

5/957729

Eric T. Carlen - Wirtz VA

H02P 520

318143

A control system for regulating the speed of a truck-mounted material conveyor includes a direct current drive motor and a truck-driven shunt generator for providing power to the motor. A control circuit has a reference input representing desired delivery rates in material weight per unit of distance and a truck speed input. A multiplier circuit converts the inputs to a delivery rate in terms of material weight per unit of time at the current truck road speed. Generator and conveyor speed feedback loops are provided to maintain a desired conveyor speed despite variations in truck engine speed or slippage at the conveyor.

5048384, Sep 17, 1991

Apr 30, 1990

7/515751

Eric T. Carlen - Roanoke VA

Carlen Controls, Inc. - Roanoke VA

B23B 2302

82170

A device for centering a feedback tachometer on an output motor shaft. The device includes a housing disposed on the motor shaft. The housing includes a base and flange in which is received a mandrel shaft. The central axis of the mandrel shaft may be aligned with the central axis of the motor shaft by set screws provided in the flange and are individually adjustable against the mandrel shaft to alter the position thereof within the flange. An adapter plate may be provided for attaching the base to the motor shaft.