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公开(公告)号：WO2020117640A2
公开(公告)日：2020-06-11
申请号：PCT/US2019/063931
申请日：2019-12-02
Applicant: MTD PRODUCTS INC
Inventor： CHANG, Her-Jye , SMITH, Aaron , MAGGARD, Jay E.
Abstract: A system and method for differential traction drive and steering axis coordination for an autonomous mower or other turf device includes initiating a steering motion based on determining a target forward speed and a steering rotational speed, calculating a left wheel speed and a right wheel speed, and applying the left and right wheel speeds, wherein the steering rotational speed is driven by a steering motor and the traction wheels associated with the autonomous mower, and the left and right wheel speeds are based on the target forward speed, a distance from a steering axle to the center of the respective wheel, and the steering rotational speed.
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公开(公告)号：WO2020081755A1
公开(公告)日：2020-04-23
申请号：PCT/US2019/056636
申请日：2019-10-17
Applicant: MTD PRODUCTS INC
Inventor： WOODRUM, Adam
Abstract: A lawn maintenance vehicle includes an adjustable seat assembly, wherein the seat assembly is rotatable relative to a frame of the vehicle when the vehicle is operated on a sloped surface. The seat assembly is rotatable in order to maintain the operator in a substantially vertical seated alignment while operating the vehicle on a sloped surface. The seat assembly is also rotatable when the vehicle is in a zero-turn or tight-turn maneuver, wherein the seat is rotated toward the center of turning radius to offset the centrifugal forces experienced by the operator during such a maneuver.
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公开(公告)号：WO2019231995A1
公开(公告)日：2019-12-05
申请号：PCT/US2019/034311
申请日：2019-05-29
Applicant: MTD PRODUCTS INC
Inventor： SCHAEDLER, Axel , LEGAN, Jeffery
Abstract: A lawn maintenance device has a transverse center line, a frame, and a power source including an output shaft attached to the frame. The lawn maintenance device further includes a rotating cutting blade. A left side is located on one side of the transverse center line and a right side located on a second side of the transverse center line. A plurality of ground engaging members are attached to the frame enabling movement of the lawn maintenance device along an associated driven surface. The ground engaging members on the left side are located at a first distance from the transverse center line that is different from a second distance that those on the right side are located from the transverse center line. Another example includes ground engaging members on opposite sides of the lawn maintenance device being located at different distances from a central axis of the cutting blade.
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公开(公告)号：WO2019108505A1
公开(公告)日：2019-06-06
申请号：PCT/US2018/062530
申请日：2018-11-27
Applicant: MTD PRODUCTS INC
Inventor： CMICH, Ryan
Abstract: A low impact turf wheel having a wheel rim including an inner and outer surface, a plurality of pegs extending radially outward from the outer surface of the wheel rim, wherein the plurality of pegs maintain the wheel rim above an area of turf, and a hub. A turf wheel having a wheel rim having an inner and outer surface, a plurality of pegs extending radially outward from the outer surface of the wheel rim, wherein the peg comprises a stem, a collar and a lug, and wherein the lug includes a limited surface area to provide a ground contacting tread, and a hub.
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公开(公告)号：WO2019094168A1
公开(公告)日：2019-05-16
申请号：PCT/US2018/056607
申请日：2018-10-19
Applicant: MTD PRODUCTS INC
Inventor： KEDELTY, Dominic , KHORSHIDI, Maryam
Abstract: A blower impeller having a plate with a first side surface, a second side surface, and an outer circumferential edge extending between the first and second side surfaces; a front blade series extending from the first side surface, the front blade series comprising a plurality of front fins, wherein each front fin includes a first radius of curvature and a second radius of curvature; and a rear blade series extending from the second side, the rear blade series comprising a plurality of rear fins.
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公开(公告)号：WO2019075333A3
公开(公告)日：2019-04-18
申请号：PCT/US2018/055619
申请日：2018-10-12
Applicant: MTD PRODUCTS INC
Inventor： BRINGHURST, Cory , KUCERA, Jeffrey
Abstract: A handheld tool includes a power assembly rotatably connected to a control assembly that is, in turn, rotatably connected to one end of a boom that has a tool assembly operatively attached to an opposing end thereof. The power assembly includes a power source, wherein the power source provides power to the tool assembly by way of the boom. The control assembly includes an actuating mechanism for selectively controlling the operation of the tool assembly. The tool assembly is both movable and operable by a single-handed operation. The tool assembly is ambidextrously controllable.
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公开(公告)号：WO2019071061A1
公开(公告)日：2019-04-11
申请号：PCT/US2018/054495
申请日：2018-10-05
Applicant: MTD PRODUCTS INC
Inventor： SCHAEDLER, Axel
Abstract: A high-efficiency blade for a lawn maintenance tool includes a central axis and a mounting portion located on the central axis. The high-efficiency blade includes a cutting blade and a cutting blade sharpened leading edge. A cleaning blade is vertically offset from the cutting blade and is configured to mulch the associated clippings from vegetation and reduce an associated accumulation of clippings on an underside of an associated mower deck. The lawn maintenance tool can also include a deck having a separation distance between the cleaning blade and an underside of the deck. The deck can include an elevation change to vary the separation distance. The deck and high-efficiency blade can also include a forward or rearward tilt.
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公开(公告)号：WO2018187692A1
公开(公告)日：2018-10-11
申请号：PCT/US2018/026462
申请日：2018-04-06
Applicant: MTD PRODUCTS INC
Inventor： MAGGARD, Jay
Abstract: An autonomous mobile work system (20) includes a drive wheel (34) that is connected to a frame (24) and a rotating blade assembly (36). The rotating blade assembly (36) includes a blade assembly axis of rotation (38) and is connected to the frame (24) within a housing (26). The mobile work system (20) further includes a single motor (40) operably connected to the blade assembly (36). The motor (50) includes a motor output shaft (44) and the motor output shaft (44) includes an output shaft axis of rotation (46). The mobile work system (20) still further includes a gear box (50) operably connected to the drive wheel (34) and the motor output shaft (44). The single motor (50) urges rotation of both the rotating blade assembly (36) and the drive wheel (34). The gear box (50) can include a planetary gear set (104) including a ring gear (110) defining cavities (120) at its outside diameter (124). A locking shaft (126) can rotate between an engaged position and a disengaged position with one of the cavities (120).
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公开(公告)号：WO2018057740A1
公开(公告)日：2018-03-29
申请号：PCT/US2017/052723
申请日：2017-09-21
Applicant: MTD PRODUCTS INC
Inventor： BIGGE, William , HOBRATH, Gerald
Abstract: A sun shade (20) for a lawn maintenance tool (24) includes a bracket (28) configured to accommodate a profile of the lawn maintenance tool (24) to the rear of an associated seat (30). A frame (36) is configured to cooperate with the bracket (28), and a fastener (40) attaches the frame (36) and the bracket (28) to the lawn maintenance tool (24). A quantity of material (80) is attached to the frame (36) above the lawn maintenance tool (24), where the material (80) is configured to inhibit passage of sunlight through the material (80). In further examples, the sun shade (20) can be foldable at one or more locations by using breakaway hinges (84, 98). A kit (74) including the sun shade (20) can also be used to modify the lawn maintenance tool (24).
Abstract translation: 用于草坪维护工具（24）的遮阳帘（20）包括托架（28），托架（28）构造成将草坪维护工具（24）的轮廓容纳到相关联的座椅（30）的后部 ）。 框架36构造成与支架28配合，并且紧固件40将框架36和支架28附接到草坪维护工具24。 在草坪维护工具（24）上方的框架（36）上附着一定量的材料（80），其中材料（80）被配置为阻止阳光穿过材料（80）。 在进一步的例子中，通过使用分离铰链（84,98），遮阳帘（20）可以在一个或多个位置折叠。 包括遮阳帘（20）的套件（74）也可以用于修改草坪维护工具（24）。
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公开(公告)号：WO2017184869A1
公开(公告)日：2017-10-26
申请号：PCT/US2017/028644
申请日：2017-04-20
Applicant: MTD PRODUCTS INC
Inventor： SCHAEDLER, Axel , BUCHANAN, Peter, J.
IPC: A01D34/73
Abstract: A low-energy blade system (12) having a quick-change attachment for a lawn maintenance tool (10) is provided. The low-energy blade system (12) requires a reduced amount of energy to rotate the blade system. The blade system includes a shell (30), a mounting plate (32) attached to the shell, a plurality of quick-attach mechanisms (36), and a separate cutting blade (34) attachable to each of the quick-attach mechanisms (36). Each quick-attach mechanism (36) allows a cutting blade (34) to be attached to the mounting plate (32) without the need for external tools, such as screwdriver, wrench, ratchet, or the like.
Abstract translation: 提供了一种具有用于草坪维护工具（10）的快速更换附件的低能量叶片系统（12）。 低能量叶片系统（12）需要减少的能量来旋转叶片系统。 刀片系统包括外壳（30），附接到外壳的安装板（32），多个快速附接机构（36）以及可附接到每个快速附接机构（36）的单独的切割刀片（34） 36）。 每个快速连接机构（36）允许在不需要外部工具（例如螺丝刀，扳手，棘轮等）的情况下将切割刀片（34）连接到安装板（32）。
