公开(公告)号：US20250072319A1

公开(公告)日：2025-03-06

申请号：US18816704

申请日：2024-08-27

Applicant: MTD PRODUCTS INC

Inventor： Jay Maggard

IPC: A01D34/06 ,  A01D34/26

Abstract: Provided is a ground following trimmer having a frame, a trimmer, and a height adjustment suspension. The trimmer extends between the frame right side and the frame left side. The height adjustment suspension has a slider-crank mechanism engaged with the frame and having a crank and a slider. The crank defines a height adjustment axis about which the crank is rotatably engaged to the frame, and a roller axis offset from the height adjustment axis by a fixed crank distance. The slider has a first slider end engaged to the frame, and a second slider end engaged to the crank to transmit work from the slider to the crank to rotate the crank with respect to the frame about the height adjustment axis. Rotation of the crank about the height adjustment axis changes the position of the roller axis in the height direction.

公开(公告)号：US20240410455A1

公开(公告)日：2024-12-12

申请号：US18735888

申请日：2024-06-06

Applicant: MTD PRODUCTS INC

Inventor： Jay Maggard

IPC: F16H37/02 ,  F16H59/38 ,  F16H61/662

Abstract: Mechanical infinitely variable transmissions (IVTs) and vehicles employing such IVTs are discussed. The IVT can comprise a planetary gearset with a sun gear driven based on an input angular velocity and an annulus gear driven based on a combination of the input angular velocity and a variable gear ratio of a pulley system, wherein the variable gear ratio of the pulley system can be electrically controlled by an actuator. A drive element can be driven based on a carrier of the planetary gearset.

公开(公告)号：US20230249745A1

公开(公告)日：2023-08-10

申请号：US18106311

申请日：2023-02-06

Applicant: MTD PRODUCTS INC

Inventor： Jay Maggard ,  Zachary A. Lyzen

IPC: B62D11/04 ,  A01D34/64

CPC classification number: B62D11/04 ,  A01D34/64 ,  A01D2101/00

Abstract: Selectively powered caster wheels for a maintenance apparatus are described. A motor attached to the caster wheel(s) can be selectively powered to apply force to the caster wheel. This force can be selected to overcome another force sensed at the maintenance apparatus, or to steer the maintenance apparatus on a desired course or direction. The caster wheels can be configured to orient along a direction of motion of the maintenance apparatus, in response to power from the motor or in response to the motion of the maintenance apparatus itself. In further embodiments, the motor(s) can be selectively activated or deactivated by an operator of the maintenance apparatus, in response to a remote control signal, or in response to an onboard or offboard controller of the apparatus.