Samir M Kherat

US Patent:

6810366, Oct 26, 2004

Filed:

Mar 25, 2002

Appl. No.:

10/105470

Inventors:

Larry E. Kendrick - Peoria IL
Samir Med Kherat - Peoria IL
Muhammed Were - Peoria IL

Assignee:

Caterpillar Inc - Peoria IL

International Classification:

G06F 1500

US Classification:

702190, 702189

Abstract:

The present invention provides apparatuses and methods for filtering a signal. A first processing device receives a first control signal and a first feedback signal and transmits a first error signal as a function of those signals. A second processing device receives the first error signal and transmits a second control signal as a function of the first error signal, a deadband, and a gain factor. A third processing device receives the second control signal and the first feedback signal and transmits an output signal as a function of those signals. A fourth processing device receives the output signal and transmits the first feedback signal as a function of the output signal to the first processing device and the third processing device, the first feedback signal being substantially equal to the output signal delayed by a first predetermined duration of time.

US Patent:

20120130598, May 24, 2012

Filed:

Nov 22, 2010

Appl. No.:

12/951454

Inventors:

Ramadev Burigsay Hukkeri - Pittsburgh PA, US
Samir Med Kherat - Pittsburgh PA, US

International Classification:

G06F 7/00
G01B 11/24

US Classification:

701 49, 356603

Abstract:

An object detection system for a mobile machine is disclosed. The object detection system may have a first array of laser beam transmitters configured to generate a first plurality of grid lines on a ground surface, and a second array of laser beam transmitters configured to generate a second plurality of grid lines on the ground surface and produce a plurality of intersections with the first plurality of grid lines. The object detection system may also have a receiver configured to detect the plurality of intersections and generate a signal used to create an electronic terrain map based on the detection. At least one of the first and second arrays of laser beam transmitters may be selectively movable during operation to change a location of the plurality of intersections.

US Patent:

H19909, Sep 4, 2001

Filed:

Dec 23, 1998

Appl. No.:

9/220239

Inventors:

Samir M. Kherat - Peoria IL
Stephen W. Rector - Metamora IL

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

H01L 4300

US Classification:

338 32R

Abstract:

A magnetic shunt device for use in a Hall effect sensor application wherein the shunt device is positioned and located relative to the Hall effect element and is shaped and dimensioned so as to shield and null the influence of the magnetic field when such field is substantially parallel to the sensitive plane of the Hall effect element. The present shunt device ensures that the null output voltage of the Hall effect element in a particular sensor application is consistent for a large number of such sensors despite misalignment problems and mechanical uncertainties in accurately arranging the magnetic devices that generate the magnetic field relative to the Hall effect element at the null or "no action" position of the sensor. The present device also obviates the requirement to use additional electronic circuitry to adjust the output voltage of the Hall effect element at the null or "no action" position.

US Patent:

20140170617, Jun 19, 2014

Filed:

Dec 19, 2012

Appl. No.:

13/719591

Inventors:

- Peoria IL, US
James Mason - Peoria IL, US
Timothy Felty - East Peoria IL, US
Samir M. Kherat - Peoria IL, US

Assignee:

CATERPILLAR INC. - Peoria IL

International Classification:

G09B 19/00

US Classification:

434219

Abstract:

A system for reporting operator performance of a machine includes a plurality of sensors and a communications interface. A portable computing device is removably mounted on the machine and has a user identification data code unique to a machine operator. A controller determines an identity of the machine operator based upon the user identification data code, determine the operating conditions based upon signals from the sensors. The controller generates a performance report based at least in part upon performance data and provides the performance report to at least one of the portable computing device and a system remote from the machine.