The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 1992
Filed:
Sep. 06, 1990
Irving Bright, Peoria, IL (US);
Ronald C Erickson, Peoria, IL (US);
Dennis K Greene, Walnut Creek, CA (US);
Gerald D Hardy, Metamora, IL (US);
Robert E Hefner, Creve Couer, IL (US);
Lowell E Johnson, East Peoria, IL (US);
Donald J Schwingel, Peoria, IL (US);
Richard E Spring, Washington, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
An apparatus is adapted to assess the performance of a vehicle's powertrain. A microcomputer collects sensor data indicative of the rotational velocity of an output shaft and a transmission input shaft and of the pressure of a directional clutch and a speed clutch. The microcomputer calculates a set of powertrain parameters based on the collected sensor data and produces an error signal in response to predetermined conditions of the powertrain parameters.