Earth working – Automatic power control – Obstruction sensing type
Patent
1989-10-20
1991-07-09
Corbin, David H.
Earth working
Automatic power control
Obstruction sensing type
172272, 172439, 172448, A01B 6310
Patent
active
050296507
ABSTRACT:
A vertical angle adjustable quick-attaching coupler for attaching an implement to the three point hitch of a vehicle. The coupler comprises a coupler frame, attachment means for pivotally mounting the coupler to the three point hitch of the vehicle, hook members for attaching the coupler to the implement, and angle adjustment means which includes a lever arm and a hydraulic cylinder for adjusting the vertical angle of the plane defined by the three attachment points of the three point hitch relative to the plane defined by the hook members of the coupler.
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Sukup, "Auto Guide", Guidance System Brochures, Sukup Mftg. Co.
"End Cultivator Blight", article, Farm Industry News, Jul. 1989, vol. 22, No. 7, p. 57.
"Machinery Today", article, Farm Journal, Apr. 1989, p. 32.
"Hydraulic 3-Pt. Top Link", article, Darwin Reyne, Farm Show, vol. 13, No. 4, Jul. 1989.
Caldwell Automatic Power Hitch advertisement.
ASAE Standard S217.10 Three-Point Free-Link Attachment for Hitching Implements to Agricultural Wheel Tractors.
ASAE Standard S278.6 Attachment of Implements to Agricultural Wheel Tractors Equipped With Quick-Attaching Coupler.
Navigator Row Crop Guidance System advertisement by H. R. Manufacturing Co.
The Guide Quick Hitch advertisement by Lincoln Creek Manufacturing Co., Inc.
Scout Guidance System advertisement by Buffalo Farm Equipment and Fleisher Manufacturing, Inc.
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Acura Trak Guidance Control advertisement by Sunco Marketing.
Corbin David H.
Sukup Manufacturing Company
Thompson Jeffrey L.
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