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US4194574: Draft power sensor and method for improving performance in earthmoving equipment

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Filing Information

Inventor(s) Harvey S. Benson · Wood, III; Charles D. ·
Assignee(s) Southwest Research Institute ·
Attorney/Agent(s) Van Steenberg; Gustav N. ·
Primary Examiner Richard T. Stouffer ·
Application Number US5832724
Filing date 09/13/1977
Issue date 03/25/1980
Predicted expiration date 09/13/1997
U.S. Classifications 172/430  · 172/7  ·
International Classifications E02F 376  ·
Kind CodeA
International Classifications 1722;3;4;7;9;430 ·
11 Claims, No Drawings


Abstract

A draft power sensor is shown which is capable of determining the amount of power being applied to the soil in earthmoving equipment. The effective draft force and the true ground speed of the earthmoving equipment are measured. This information is processed electronically to provide the product of the two values, which is the draft power. Production from earthmoving equipment can be maximized if the highest value of the draft power is maintained.

Independent Claims | See all claims (11)

  1. 1. Apparatus for determining the draft power of earth-moving equipment, said apparatus comprising:(a) a detecting means to measure the true ground speed of said earthmoving equipment;(b) detecting means to measure the draft force applied to the soil by said earthmoving equipment;(c) means for processing information obtained from said detecting means to measure true ground speed and information obtained from said detecting means to measure draft force, to derive a product which is draft power.
  2. 7. A method for determining the draft power of earthmoving equipment comprising the steps of(a) measuring the true ground speed of said earthmoving equipment;(b) measuring the draft force applied by said earthmoving equipment(c) processing the measured value of said true ground speed and the value of said draft force to obtain draft power.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US2585605 WALLACE Wallace Feb 1952
US2605393 HOLM CARL H Holm Jul 1952
US2654301 DEERE & CO Bohmker Oct 1953
US3094693 HONEYWELL REGULATOR CO Taylor Jun 1963
US3246701 INT HARVESTER CO Schulz Apr 1966
US3686941 KODEKEY ELECTRONICS INC Kramasz, Jr. et al. Aug 1972
US3716104 Koenig et al. Feb 1973
US3716104 Koenig et al. Feb 1973
US3803574 LOGUE G Logue Apr 1974

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
DE2508620VALMET OYAug 1975

Other Publications

"New Tricks for the Seabee Bulldozer," The Naval Civil Engineer, Fall 1974, pp. 42, 43.
"Tractor Earth Blading at High Speeds-Now a Reality," by E. T. Small, SAE Paper 998B, Jan. 1965.

Patent Family

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