US 12,484,474 B2
Breakaway rigid header height control system
Blaine Robert Noll, Fleetwood, PA (US); and Joel Timothy Cook, Akron, PA (US)
Assigned to CNH Industrial America LLC, New Holland, PA (US)
Filed by CNH Industrial America LLC, New Holland, PA (US)
Filed on Jan. 9, 2023, as Appl. No. 18/094,575.
Prior Publication US 2024/0224850 A1, Jul. 11, 2024
Int. Cl. A01D 34/24 (2006.01); A01D 34/04 (2006.01); A01D 41/14 (2006.01)
CPC A01D 34/243 (2013.01) [A01D 34/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A rigid height control system configured to be coupled to a header of an agricultural harvester, comprising:
a rigid arm pivotally coupled to a shaft, wherein the rigid arm comprises an upper end and a lower end, and wherein the lower end is configured to engage a ground surface;
a metal channel guide coupled to the shaft; and
a magnet embedded within the rigid arm adjacent the upper end, wherein the magnet is configured to keep a back surface of the upper end of the rigid arm attached to the metal channel guide via a magnetic force so that the lower end engages the ground surface when the agricultural harvester travels in a forward direction, and the magnet is configured, when the agricultural harvester travels in a reverse direction causing a force exerted by the ground surface on the rigid arm to exceed the magnetic force, to allow a release of the back surface of the rigid arm from the metal channel guide to enable the rigid arm to swing forward and upward.