Mohammad Arshad

US Patent:

6484620, Nov 26, 2002

Filed:

Dec 28, 2000

Appl. No.:

09/750866

Inventors:

Mohammad J. Arshad - Naperville IL
Alan D. Berger - Winfield IL
Danley C. K. Chan - Chicago IL

Assignee:

Case Corporation - Racine WA

International Classification:

F01B 3112

US Classification:

92 5R, 91 1

Abstract:

A hydraulic actuator is disclosed having a cylinder with a piston that is moved by hydraulic fluid. A light guide in one end of the cylinder directs a laser beam into the cylinder, and off the piston where the beam is reflected. The beam then exits the cylinder through a second light guide. A control unit measures the time of flight of the laser beam and calculates the piston position.

US Patent:

6710327, Mar 23, 2004

Filed:

Jun 4, 2001

Appl. No.:

09/872895

Inventors:

Mohammad Javaid Arshad - Naperville IL
Alan D. Berger - Winfield IL
Daniel L. Maierhafer - Seneca SC
Danley C. Chan - Chicago IL

Assignee:

Case, LLC - Racine WI

International Classification:

G01J 104

US Classification:

25022711, 92 5 R

Abstract:

A hydraulic actuator is disclosed having a cylinder with a piston that is moved by hydraulic fluid. A laser diode emits a pulse or pulses of light that form laser light beam. These pulses are provided to two or more optical fibers that extend into two or more corresponding cylinders. For each of these cylinders, the optical fiber enters the cylinder at one end of the cylinder and directs a laser beam into the cylinder, and off the piston where the beam is reflected. The reflected beam then exits the cylinder through at least two corresponding optical fibers disposed on either side of the fiber that conducted the light into the cylinder. Each of the optical fibers that receives reflected light is joined together with the others of the optical fibers into one fiber that carries the reflected beam of light to a photo-diode located remote from the cylinder. Each of the photo diodes for each of the two or more cylinders has a corresponding photo diode amplifier. The output of these amplifiers are coupled together and provided to a pulse expansion circuit.

US Patent:

6769349, Aug 3, 2004

Filed:

Jun 4, 2001

Appl. No.:

09/872874

Inventors:

Mohammad Javaid Arshad - Naperville IL
Alan D. Berger - Winfield IL
Daniel L. Maierhafer - Seneca SC
Danley C. Chan - Chicago IL

Assignee:

Case Corporation - Racine WI

International Classification:

F01B 3112

US Classification:

92 5R, 91 1

Abstract:

A hydraulic actuator is disclosed having a cylinder with a piston that is moved by hydraulic fluid. A light guide in one end of the cylinder directs a laser beam into the cylinder, and off the piston where the beam is reflected. The beam then exits the cylinder through at least two light guides connected to two corresponding optical fibers. Each of the optical fibers are joined together into one fiber that carries the reflected beam of light to a photo-diode located remote from the cylinder. A control circuit measures the time of flight of the laser beam.

US Patent:

6952156, Oct 4, 2005

Filed:

Dec 28, 2000

Appl. No.:

09/752009

Inventors:

Mohammad J. Arshad - Naperville IL, US
Alan D. Berger - Winfield IL, US
Peter J. Dix - Naperville IL, US

Assignee:

CNH America LLC - New Holland PA

International Classification:

G05B019/00

US Classification:

340 56, 340 564, 340 561, 340 52, 340 565, 340 525, 701 36

Abstract:

A method and system for controlling the operation of a vehicle is disclosed that includes a radio frequency transponder and a vehicle configured to respond to data stored in the transponder by preventing or disabling operation of the vehicle under certain conditions indicated by data stored in the transponder. A communications controller receives the data from the transponder, then monitors the operation of the vehicle to make sure it is operated within the limits that are stored in the transponder. By communicating with other controllers on the vehicle that are in charge of other subsystems, it receives information relating to whether the operational limits of the vehicle have been approached or exceeded, and takes appropriate action in that event, the action may include not enabling the vehicle initially, or disabling the vehicle, or causing an operator display to indicate which limit has been exceeded or approached.

US Patent:

20030189482, Oct 9, 2003

Filed:

Apr 3, 2003

Appl. No.:

10/406124

Inventors:

Mohammad Arshad - Naperville IL, US
Alan Berger - Winfield IL, US
Peter Dix - Naperville IL, US

International Classification:

G06F007/04

US Classification:

340/005610, 340/005240

Abstract:

A system and method for permitting different authorized degrees of access to two or more users of a vehicle in a fleet of vehicles. Each user has a radio (RF) transponder coupled to an ignition key that operates the ignition switch of the vehicle. The transponder stores data indicating the degree of operating access authorized to each user for the vehicle.

US Patent:

60913371, Jul 18, 2000

Filed:

Mar 15, 1999

Appl. No.:

9/268222

Inventors:

Mohammad Javaid Arshad - Downers Grove IL
Alan D. Berger - Winfield IL

Assignee:

Case Corporation - Racine WI

International Classification:

G08B 2100

US Classification:

340662

Abstract:

A sensor system for use on drilling equipment to detect the presence of high voltages during horizontal or vertical drilling and providing an alarm signal corresponding to one of three possibilities: (1) the drilling tool hitting a high voltage line; (2) the drilling tool remaining in contact after hitting the high voltage line; and (3) an exposed or damaged high voltage line in close proximity to the drilling implement. The sensor system detects alternating current, converts the alternating current signal to a pseudo square waveform signal, compares the magnitude of the square waveform signal with a reference voltage, and sounds an alarm if the magnitude of the square waveform signal exceeds the reference voltage. The sensor system also incorporates a self-test circuit which allows an operator to check its functionality before use. The operator can also check the sensor at any time during drilling process.