Harvesters – Motorized harvester – With condition-responsive operation
Patent
1983-11-21
1985-04-02
Hirsch, Paul J.
Harvesters
Motorized harvester
With condition-responsive operation
56DIG15, A01D 4100, A01D 4112, A01D 4500
Patent
active
045079102
ABSTRACT:
An automatic height control system for a header on a farm implement is disclosed wherein the height of the header is continuously controlled in response to the height of the crop on which the header is operating. The top of the crop is detected by sonar detection units, and appropriate electronic and electromechanical means are provided for controlling the height of the header in response to signals from the sonar detection units.
REFERENCES:
patent: 3094693 (1963-06-01), Taylor
patent: 3727332 (1973-04-01), Zimmer
patent: 3906710 (1975-09-01), Pask
patent: 3935866 (1976-02-01), Northup et al.
patent: 4136508 (1979-01-01), Coleman et al.
patent: 4228636 (1980-10-01), Homburg
patent: 4414792 (1983-11-01), Bettencourt et al.
patent: 4437295 (1984-03-01), Rock
Lundahl E. Cordell
Thornley W. Ray
Wiser James G.
Criddle B. Deon
Ezra C. Lundahl Inc.
Hirsch Paul J.
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