Granted Patent B2

US 12,667,036 · App. 18/205,336 · Granted Jun 30, 2026

Inventors: Jeffrey Fay, II (Oxford, PA); Glenn Bird (Leola, PA); Jason Shonk (Lancaster, PA)

Assignee: CNH Industrial America LLC

A01B63/008A01B63/22A01B73/005A01D41/141A01D41/145A01B63/002A01B63/108

Abstract

Claims (24)

1 . A pull-type mower comprising:

a frame;

a header movably attached to the frame, the header comprising a cutting mechanism and a conditioning mechanism;

a lift mechanism comprising one or more lift hydraulic actuators, the lift mechanism configured to lift the frame relative to a ground surface below the pull-type mower;

a tilt mechanism comprising one or more tilt hydraulic actuators, the tilt mechanism configured to rotate the header about an axis transverse to a fore-aft axis of the header; and

a spring mechanism arranged in parallel to the one or more tilt hydraulic actuators, the spring mechanism configured to apply a biasing force that tilts the header forward when the one or more tilt hydraulic actuators are depressurized.

2 . The pull-type mower of claim 1 , wherein the cutting mechanism comprises a disc mower.

3 . The pull-type mower of claim 1 , wherein the conditioning mechanism comprises a roller or a flail.

4 . The pull-type mower of claim 1 , wherein the one or more lift hydraulic actuators and the one or more tilt hydraulic actuators each comprise a single-acting hydraulic cylinder, wherein the one or more lift hydraulic actuators extend when pressurized to apply a lifting force to the frame, and wherein the one or more tilt hydraulic actuators retract when pressurized to apply a force that tilts the header rearward.

5 . The pull-type mower of claim 4 , wherein the one or more lift hydraulic actuators and the one or more tilt hydraulic actuators are connected in parallel to a single hydraulic line.

6 . The pull-type mower of claim 1 , wherein the spring mechanism comprises a compression spring.

7 . The pull-type mower of claim 1 , wherein the spring mechanism comprises a tension spring and a compound linkage.

8 . An agricultural harvesting machine, comprising the pull-type mower of claim 1 .

9 . A pull-type mower comprising:

a frame;

a header movably attached to the frame, the header comprising a cutting mechanism and a conditioning mechanism;

a lift mechanism comprising one or more lift hydraulic actuators, the lift mechanism configured to lift the frame relative to a ground surface below the pull-type mower; and

a tilt mechanism comprising one or more tilt hydraulic actuators, the tilt mechanism configured to rotate the header about an axis transverse to a fore-aft axis of the header;

wherein the one or more lift hydraulic actuators each comprise a single-acting hydraulic cylinder, wherein the one or more lift hydraulic actuators extend when pressurized to apply a lifting force to the frame; and

wherein the one or more tilt hydraulic actuators each comprise a double-acting hydraulic cylinder and are configured to extend when a barrel end of the one or more tilt hydraulic actuators is pressurized to apply a biasing force that tilts the header forward.

10 . The pull-type mower of claim 9 , wherein the cutting mechanism comprises a disc mower.

11 . The pull-type mower of claim 9 , wherein the conditioning mechanism comprises a roller or a flail.

12 . The pull-type mower of claim 9 , wherein a barrel end of the one or more lift hydraulic actuators and a rod end of the one or more tilt hydraulic actuators are operatively connected in parallel to a first hydraulic line, and wherein the barrel end of the one or more tilt hydraulic actuators is operatively connected to a second hydraulic line.

13 . An agricultural harvesting machine, comprising the pull-type mower of claim 9 .

Assignments (1)

Continuity (1)

References Cited (38)