公开(公告)号：US12109724B2

公开(公告)日：2024-10-08

申请号：US17443646

申请日：2021-07-27

申请人： Chain Orthopedics, LLC

发明人： Paul Viola ,  Ira Sanders ,  Timothy J. Langloss

IPC分类号： B27B33/14 ,  B23D57/02 ,  B27B17/02 ,  B27B17/08

CPC分类号： B27B33/142 ,  B23D57/023 ,  B27B17/02 ,  B27B17/083

摘要： Improved chain saws, components for chain saws, methods of making chain saws and components, and methods of using chain saws and components are disclosed. In some embodiments, a chain saw comprises a saw bar and a plurality of links, wherein a first link has a hook that engages a recess of a second link, thereby coupling the first link and the second link and allowing them to articulate without decoupling. The saw bar may have a rail, and the links may have grooves such that the links straddle and ride over the rail. The rail may have a projection and the grooves of the links may have notches accommodating the projection such that the projection prevents dislocation of the links. The links may have conical or pyramidal cutting teeth. The chain may be bidirectional. Robotic and automated operation of saws and other instruments are also disclosed.

公开(公告)号：US12103199B2

公开(公告)日：2024-10-01

申请号：US17605169

申请日：2020-06-04

申请人： HUSQVARNA AB

发明人： Andreas Jönsson

IPC分类号： B28D1/08 ,  B23D45/16 ,  B23D47/12 ,  B23D57/02 ,  B23D61/02 ,  B27B5/14 ,  B27B17/04 ,  B27B17/06 ,  B27B17/08 ,  B28D1/04

CPC分类号： B28D1/082 ,  B23D45/16 ,  B23D47/123 ,  B23D57/023 ,  B23D61/025 ,  B27B5/14 ,  B27B17/04 ,  B27B17/06 ,  B27B17/08 ,  B28D1/045

摘要： A work tool (100) comprising: a cutting chain (110), a drive mechanism for driving the cutting chain (110), an annular member (120) arranged rotatably supported by one or more support rollers (130,140,150), wherein the annular member comprises a rim (230) adapted to support the cutting chain (110) during cutting, and a support wheel (160) arranged distanced from the annular member (120), wherein the cutting chain (110) is arranged supported on a rim segment (102) of the annular member (110) forming part of a cutting area of the tool (100) and supported on a rim segment (103) of the support wheel (160) in a direction away from the cutting area of the tool (100). An annular member and a method of producing an annular member are also disclosed.

公开(公告)号：US20240278449A1

公开(公告)日：2024-08-22

申请号：US18648131

申请日：2024-04-26

申请人： Positec Power Tools (Suzhou) Co., Ltd.

发明人： Yibang JIANG ,  Xuefeng Yu

IPC分类号： B27B17/12 ,  B27B17/00 ,  B27B17/02 ,  B27B17/08

CPC分类号： B27B17/12 ,  B27B17/0008 ,  B27B17/02 ,  B27B17/086

摘要： A chain saw includes a housing, a working head, a protective member, and a pumping mechanism. The working head includes a guide plate and a cutting element arranged around the guide plate. The cutting element moves around the guide plate to implement cutting. The protective member is movably mounted on the housing, and at least partially covered on the working head. The pumping mechanism is configured to deliver a lubricating medium to the working head. The pumping mechanism is configured to output the lubricating medium as triggered by movement of the protective member. When the working head is in a working state, the protective member is pushable by a to-be-cut object to move in a direction away from the working head, to trigger the pumping mechanism to output the lubricating medium.

公开(公告)号：US12036655B2

公开(公告)日：2024-07-16

申请号：US18191155

申请日：2023-03-28

申请人： YAMABIKO CORPORATION

发明人： Atsushi Nishimura ,  Satoshi Ueda

IPC分类号： B25F5/00 ,  H02P3/08 ,  H02P27/04 ,  H02P27/06 ,  B27B17/08

CPC分类号： B25F5/001 ,  H02P3/08 ,  H02P27/045 ,  H02P27/06 ,  B25F5/008 ,  B27B17/08

摘要： According to an aspect of the present invention, an electric working machine is provided. The electric working machine comprises a motor, an operation portion, a working portion, and a controller. The working portion is configured to be driven by the motor and act on a work target. The operation portion is configured to be operated by an operator. The controller is configured to control a maximum power that can be input to the motor to a first power when receiving an operation signal indicating an amount of operation to the operation portion. Further, the controller is configured to perform first switching control to switch the maximum power to a second power that is less than the first power when rotation speed of the motor becomes less than a first threshold due to a load on the working portion.

公开(公告)号：US20240227232A1

公开(公告)日：2024-07-11

申请号：US18519466

申请日：2023-11-27

申请人： Nanjing Chervon Industry Co., Ltd.

发明人： Yang Li ,  Haoyu Wang

IPC分类号： B27B17/08 ,  B27B17/00

CPC分类号： B27B17/08 ,  B27B17/0008 ,  A01G3/086

摘要： A pole chain saw includes a connecting rod and a front end assembly disposed at the front end of the connecting rod. The front end assembly includes an electric motor; an output device including a guide plate and a chain wound around the guide plate, where the electric motor drives the chain to rotate; a transmission assembly connecting the electric motor to the output device; and a gearbox supporting and accommodating the transmission assembly, where at least part of the gearbox is made of metal. The chain saw can effectively enhance the heat dissipation effect of the gearbox and increase the service life of a transmission mechanism.

公开(公告)号：US11872718B2

公开(公告)日：2024-01-16

申请号：US17901143

申请日：2022-09-01

申请人： MILWAUKEE ELECTRIC TOOL CORPORATION

发明人： Shane McCue ,  Drake J. Schlosser ,  Charles M. Rowland ,  Anthony J. Buxton

IPC分类号： B27B17/00 ,  B27B17/02 ,  B27B17/12 ,  B27B17/08

CPC分类号： B27B17/0008 ,  B27B17/02 ,  B27B17/086 ,  B27B17/12

摘要： A handheld cutting tool includes a housing including a motor housing portion, a drive housing portion, and a handle portion extending from one of the motor housing portion or the drive housing portion. A motor is located in the motor housing portion. A driven gear is coupled to the motor for receiving torque therefrom. A first guard extends between the handle portion and one of the drive housing portion or the motor housing portion, and a second guard extends between the drive housing portion and one of the handle portion and the motor housing portion. A guide bar extends from the drive housing portion at an angle offset relative to the handle portion and the first and second guards. A chain is supported on the guide bar, and a battery pack is removably coupled to a bottom part of the handle portion.

公开(公告)号：US11731305B2

公开(公告)日：2023-08-22

申请号：US17206452

申请日：2021-03-19

申请人： Andreas Stihl AG & Co. KG

发明人： Georg Heinzelmann ,  Pirmin Sontheim ,  Alexander Haas ,  Peter Seibold

IPC分类号： B27B17/08

CPC分类号： B27B17/08

摘要： A hand-portable garden, forestry and/or construction processing device has a cutting tool, an electric drive motor, a motor operating element, and a control device. The cutting tool is designed for cutting through work. The drive motor is designed for driving the cutting tool. The motor operating element is user-adjustable over an adjustment range from a minimum setting to a maximum setting. The control device is designed for controlling a target speed of the drive motor in accordance with a setting of the motor operating element in at least one first operating mode and one second operating mode. In the first operating mode, the target speed increases over at least one segment from a minimum of 0.5 times the adjustment range as the setting increases, wherein the increase changes over the segment by a maximum of 60%. In the second operating mode, the target speed is a minimum of 0.9 times a maximum target speed of the second operating mode as the setting increases from a maximum of 50% of the adjustment range.

公开(公告)号：US11712819B2

公开(公告)日：2023-08-01

申请号：US17118905

申请日：2020-12-11

申请人： HUSQVARNA AB

发明人： Anthony Baratta ,  Peter Zetterlind ,  Andreas Jönsson

IPC分类号： B28D1/08 ,  B27B17/00 ,  B27B17/08 ,  B27B17/14

CPC分类号： B28D1/084 ,  B27B17/0083 ,  B27B17/08 ,  B27B17/14

摘要： A concrete cutting machine includes a motor, a pivot arm, and a concrete cutting chain assembly. The motor has an output drive, and the pivot arm has an input coupled to the output drive for receiving power from the motor. The arm is configured to pivot relative to the motor, and the pivot arm has a pivot arm output. The concrete cutting chain assembly is supported on the pivot arm and has a power input coupled to the pivot arm output. The chain assembly is configured to be pivotable relative to the pivot arm.

公开(公告)号：US11623288B2

公开(公告)日：2023-04-11

申请号：US16629956

申请日：2018-07-10

申请人： PRINZ GMBH & CO KG

发明人： Ingo Freithofnigg

IPC分类号： B23D57/02 ,  B27B17/00 ,  B27B17/02 ,  B27B17/08

摘要： A method for operating a saw assembly as well as a saw assembly, having a chainsaw (1) with a circulating saw chain (2) and a chain drive sprocket (3) for driving the saw chain (2). The chainsaw (1) is secured to a moving device (8) via a chainsaw swivel device (19). The moving device (8) has a first operating mode, in which the chainsaw (1) is moved or movable from a first position through a saw area (9) and through the cutting material (18) into a second position, and the moving device (8) has a second operating mode, in which the chainsaw (1) is moved or movable from the second position back through the saw area (9) and through the cutting material (18) into the first position.

公开(公告)号：US11457573B2

公开(公告)日：2022-10-04

申请号：US16301479

申请日：2017-05-10

申请人： LOG MAX AB

发明人： Mikael Eliasson

IPC分类号： A01G23/091 ,  A01G23/083 ,  B27B17/00 ,  B27B17/08

摘要： The present disclosure relates to a tree harvesting machine (120) having a crane arm (118), wherein the crane arm (118) comprises a tree harvesting head (100; 200) arranged at a free end of the crane arm (118). The tree harvesting head (100) comprises a saw (104) and at least two feed wheels (102). The tree harvesting head (100) further comprises an electric motor (106a) arranged to drive the saw (104), and at least one electric motor (106b) arranged to drive the feed wheels (102). The present disclosure also relates to associated tree harvesting monitoring systems, tree harvesting heads, methods and computer programs.