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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
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.
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公开(公告)号：US11612116B2
公开(公告)日：2023-03-28
申请号：US17322269
申请日：2021-05-17
申请人： UE Laboratory Inc.
发明人： Xiaoqi Ma
IPC分类号： A01G23/091 , B27B17/00 , B27B17/02
摘要： A method and apparatus are provided for vertically felling trees by taking apart the trunk in a stepwise manner combining sagittal and horizontal cross-sections. A vertical frame is attachable to a tree trunk, the vertical frame having a movable portion and a fixed portion. A first cutting device is attachable to the vertical frame and configured to cut the tree sagittally substantially along a longitudinal axis of the tree. A second cutting device is attachable to the vertical frame and configured to cut the tree horizontally from an exterior of the tree to a sagittal cut made in the tree by the first cutting device. A locking mechanism releasably locks the movable portion of the frame to the fixed portion of the frame. The apparatus uses the weight of the upper trunk to maintain stability to steadily decrease the tree height until the entire tree is removed.
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公开(公告)号：US11559916B2
公开(公告)日：2023-01-24
申请号：US16777390
申请日：2020-01-30
申请人： MAKITA CORPORATION
发明人： Takuma Niiyama
摘要： An electric working machine may include: a support rod constituted of metal; a tool disposed at a front end of the support rod; a motor configured to drive the tool; a control unit disposed at a rear end of the support rod and configured to control the motor; and a heat transfer structure configured to transfer heat from the control unit to the support rod.
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公开(公告)号：US11491635B2
公开(公告)日：2022-11-08
申请号：US17394936
申请日：2021-08-05
发明人： Adar Omry , Ohad Waissengreen , Amit Ran , Nir Yona
摘要： A sawhorse includes a modular work surface supported by a frame. The modular work surface includes a first side portion, a second side portion and a central portion. The modular work surface is configured to move between a compact configuration and an expanded configuration. In the compact configuration the first side portion and the second side portion are adjacent to one another to provide a compact worktop and the central portion is positioned beneath the compact worktop. In the expanded configuration, the first side portion and the second side portion are distal to one another and the central portion is positioned therebetween to create an expanded worktop.
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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.
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公开(公告)号：US11453110B2
公开(公告)日：2022-09-27
申请号：US16826779
申请日：2020-03-23
申请人： Yamabiko Corporation
发明人： Hisato Osawa , Kenji Nakano
摘要： Provided is an electric power work device which includes: a body case; a work tool protruding forward from a front side with respect to the body case; a motor; and a battery supplying power to the motor. The motor is accommodated in the body case and the battery is detachably attached to a rear side with respect to the body case. A top handle is extended in a longitudinal direction at an upside with respect to the body case. The top handle includes, on an upper surface of a front part thereof, a thumb rest and a power switch. The power switch is arranged on a side in a lateral direction of the thumb rest.
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公开(公告)号：US11440176B2
公开(公告)日：2022-09-13
申请号：US16480456
申请日：2017-01-24
发明人： Zhigang Peng , Hua Fan
摘要： An electric tool (20) allowing an external battery pack (26) to detachably connect thereto is disclosed. The electric tool (20) includes a housing and a motor (22) installed in the housing, and in addition the electric tool (20) includes a supporting part fixedly coupled to the housing; and a terminal holder (38). The terminal holder (38) is adapted to contact with terminals on an external battery pack (26) in order to form a consistent electrical connection. The terminal holder (38) is confined by the supporting member (56,58) and in the meantime adapted to move relative to the supporting part. The terminal holder (38) has a hollow shape and is adapted to contact with the support member (56,58) at an exterior surface of the terminal holder (38). As the terminal holder (38) is tightly fitted with the battery pack (26) but at the same time loosely fitted with the tool housing, chances of generating sparks or electric arc between the metal terminals can be minimized.
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公开(公告)号：US11343981B2
公开(公告)日：2022-05-31
申请号：US16026806
申请日：2018-07-03
发明人： Friedrich Hollmeier , Harald Mang
IPC分类号： G01S13/75 , A01G23/099 , B27B17/00 , G01B15/00
摘要： A gardening and/or forestry system includes a distance measuring system, including a first distance part and a second distance part, wherein the second distance part is configured to be carried on a body of a gardener and/or forestry worker. The distance measuring system is configured to exchange a measuring signal between the first distance part and the second distance part and to measure a distance between the first distance part and the second distance part based on the exchanged measuring signal. An output device is configured to output information based on the measured distance to the gardener and/or forestry worker.
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公开(公告)号：US20220097250A1
公开(公告)日：2022-03-31
申请号：US17460314
申请日：2021-08-30
发明人： Yuexun Cao , Yinan Guo , Tao Wang , Lingao Zhang
摘要： The disclosure provides a chain saw including a housing, a motor, a chain saw bar assembly, a tensioning assembly set on the housing, and an adjustment assembly set on the side cover corresponding to the tensioning assembly. The chain saw bar assembly is detachably connected to the first housing through the combination of the tensioning assembly and the elastic components, the adjustment assembly is movably connected with the tensioning assembly, and the adjustment assembly can adjust the relative position of the tensioning assembly and the guide shaft, to tension the chain set on the circumferential direction of the guide bar and tightly lock the chain saw bar assembly between the first housing and the side cover.
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公开(公告)号：US20220055203A1
公开(公告)日：2022-02-24
申请号：US17394936
申请日：2021-08-05
发明人： Adar OMRY , Ohad WAISSENGREEN , Amit RAN , Nir YONA
摘要： A sawhorse includes a modular work surface supported by a frame. The modular work surface includes a first side portion, a second side portion and a central portion. The modular work surface is configured to move between a compact configuration and an expanded configuration. In the compact configuration the first side portion and the second side portion are adjacent to one another to provide a compact worktop and the central portion is positioned beneath the compact worktop. In the expanded configuration, the first side portion and the second side portion are distal to one another and the central portion is positioned therebetween to create an expanded worktop.
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