1
Robert T Mintus, John C Paine: Charging system for a vehicle. Caterpillar Industrial, David M Masterson, September 17, 1991: US05049802 (226 worldwide citation)

Automated charging systems for vehicles having rechargeable batteries are in common use today. Such systems typically have exposed contacts or the need for additional circuitry to move the contacts. The subject system includes circuitry which allows the charge receiving member to be only connected t ...


2
Thomas R Sandborg, David R Schricker, Mark E Rettig: Method for generating performance ratings for a vehicle operator. Caterpillar, David M Masterson, May 26, 1998: US05758299 (101 worldwide citation)

In one aspect of the present invention, a method for generating performance ratings that indicate the driving performance of a vehicle operator is disclosed. The method senses various operating parameters of the vehicle and produces representative signals. Sensed signals are compared to correspondin ...


3
David R Schricker, Jagannathan Sarangapani, David G Young, Satish M Shetty: Method and apparatus for comparing machines in fleet. Caterpillar, David M Masterson, April 7, 1998: US05737215 (88 worldwide citation)

An apparatus for comparing one machine in a fleet of machines is provided. The apparatus senses a plurality of characteristics of each machine in the fleet and responsively determines a set of fleet data. The apparatus further determines a set of reference machine data as a function of the fleet dat ...


4
Jagannathan Sarangapani, David R Schricker: Method and apparatus for predicting a fault condition. Caterpillar, David M Masterson, September 7, 1999: US05950147 (85 worldwide citation)

An apparatus for predicting a fault condition for a machine is disclosed. The machine has a plurality of parameters being dependent upon machine performance. A sensor connected to the machine produces an electrical signal in response to one of the plurality of machine parameters. A computer produces ...


5
John P Hoffman, Ricky D Vance, Dennis A Barney: Method and apparatus for displaying sensor outputs in a diagnostic system. Caterpillar, David M Masterson, September 7, 1999: US05949330 (73 worldwide citation)

Systems for monitoring sensed parameters and diagnosing fault conditions are useful in connection with many machines. Advantageously, such systems are capable of indicating the level of the sensed parameters in both a graphical and a digital format. In the subject invention, a switch selects one of ...


6
Tony L Marcott, Matthew G Branch, Andrew H Nippert, Kirk S Shively: Method and apparatus for determining the position of an armature in an electromagnetic actuator. Caterpillar, David M Masterson, January 2, 1996: US05481187 (71 worldwide citation)

Electromagnetic actuators having a coil and an armature are used in a number of applications in which it is useful to have an indication of the position of the armature with respect to the coil without the use of external sensors. Accordingly, an actuator control system is provided for determining t ...


7
Jagannathan Sarangapani: Method and apparatus of predicting a fault condition. Caterpillar, David M Masterson, September 12, 2000: US06119074 (69 worldwide citation)

An apparatus for predicting a fault condition for a machine is disclosed. The machine has a plurality of parameters being dependent upon machine performance. A sensor connected to the machine produces an electrical signal in response to one of the plurality of machine parameters. A computer produces ...


8
David R Schricker: Method for determining a remaining life of engine oil. Caterpillar, James R Yee, David M Masterson, May 12, 1998: US05750887 (68 worldwide citation)

A method for determining a remaining life of engine oil in an engine is provided. The method includes the steps of measuring a plurality of engine parameters, determining an estimate of the characteristics of the engine oil as a function of the engine parameters, and trending the estimate and respon ...


9
John J Wunning, Errol W Davis, Larry E Schmidt, Ronald J Penick, Mohamad Z Deiri, Paul M Young: Control system for an internal combustion engine. Caterpillar, David M Masterson, April 13, 1993: US05201296 (67 worldwide citation)

A control system for an internal combustion engine having a plurality of cylinders and a rotatable crankshaft. Each cylinder has an electronically actuatable intake valve, exhaust valve and fuel injector. The control system includes a sensor which monitors the rotation of the crankshaft and responsi ...


10
David J Rocke: Control system for automatically controlling a work implement of an earthworking machine to capture material. Caterpillar, David M Masterson, Thomas J Bluth, James R Yee, June 25, 1996: US05528843 (61 worldwide citation)

In one aspect of the present invention, an automatic control system for loading a bucket of a wheel loader is disclosed. The system includes a pressure sensor that produces pressure signals in response to the hydraulic pressures associated with one of the lift and tilt cylinders. A microprocessor re ...