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公开(公告)号：US11267160B2
公开(公告)日：2022-03-08
申请号：US16760774
申请日：2018-10-04
申请人： HUSQVARNA AB
发明人： Christian Bylund
摘要： A lubrication monitoring arrangement (1) is disclosed configured to monitor a supply of lubricant in a lubrication system (3) of a hand-held cutting tool (5). The arrangement (1) comprises a heating element (13) and a control unit (15). The heating element (13) is arranged to heat a portion (17′, 17″, 17′″, 17″″) of the lubrication system (3). The control unit (15) is configured to monitor the supply of lubricant in the lubrication system (3) by monitoring the change in temperature of the portion (17′, 17″, 17′″, 17″″) of the lubrication system (3). The present disclosure further relates to a hand-held cutting tool (5), and a method (100) of monitoring a supply of lubricant in a lubrication system (3) of a hand-held cutting tool (5).
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公开(公告)号：US11267159B2
公开(公告)日：2022-03-08
申请号：US16573127
申请日：2019-09-17
摘要： Mobile assembly for cutting wood includes a base supported by wheels, and a plurality of posts extending upwards from the base. A frame is removably coupled to a distal post and a proximal post. The frame configured to pivot relative to at least one of the distal and proximal posts when coupled thereto, the frame configured for positioning at different heights along the at least one of the distal and proximal posts. An arm is supported by the frame, the arm configured for sliding about, and parallel to, the frame. The arm includes a chainsaw attached to a distal region of the arm.
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公开(公告)号：US11186007B2
公开(公告)日：2021-11-30
申请号：US14439796
申请日：2013-10-31
申请人： Husqvarna AB
摘要： A chainsaw (100) includes a power unit, a bar (120), a chain (122) operably coupled to the bar (120) to rotate around the bar (120) responsive to drive power from the power unit, an oil pump operably coupled to the power unit to deliver oil to the chain (122), and an oil 420 reservoir (400) configured to hold oil for delivery to the chain (122) via the oil pump. The oil reservoir (400) may include a main chamber (410) to receive the oil and an air chamber (420). The air chamber (420) may be formed adjacent to and distinct from the main chamber (410). The air chamber (420) is configured to define a space for an air pocket.
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公开(公告)号：US11014263B2
公开(公告)日：2021-05-25
申请号：US15784701
申请日：2017-10-16
申请人： HUSQVARNA AB
发明人： Niklas Sarius , Adam Ståhlkrantz
摘要： A cutting chain for a chainsaw may include a plurality of drive links, and a plurality of cutter links. Each of the drive links includes a top portion and a bottom portion that interfaces with a guide bar of the chainsaw. The cutter links are operably coupled to respective ones of the drive links at the top portion thereof. At least one of the cutter links includes a base portion and a cutting portion extending away from the base portion. The cutting portion includes a side plate and a top plate, the top plate including a top face and a bottom face. The side plate includes an outer face and an inside face. Multiple coating materials are provided on respective different surfaces of the drive links or cutter links such that different coating materials are applied based on a wear context of the respective different surfaces.
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公开(公告)号：US10981292B2
公开(公告)日：2021-04-20
申请号：US16530681
申请日：2019-08-02
发明人： Christian Schlecker , Juergen Haeberlein , Andreas Garstenauer , Eric Wawrzkiewicz , Andreas Giesea
摘要： A handheld work apparatus includes a drive motor, an operating-fluid tank and a motor carrier on which the drive motor is held. The operating-fluid tank has a first housing section and a second housing section. The first housing section is realized so as to be integral with the motor carrier. At least a portion of the second housing section is formed from light-transmitting material to permit discerning the fill level of the operating-fluid tank. The motor carrier has a light-transmitting light conductive element for conducting light into the operating-fluid tank.
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公开(公告)号：US20200338780A1
公开(公告)日：2020-10-29
申请号：US16854249
申请日：2020-04-21
申请人： MAKITA CORPORATION
摘要： A chain saw may comprise a braking mechanism; a housing including a first space and a second space in which the braking mechanism is disposed; and an operation member. The housing may include a through hole communicating the second space to outside of the housing. The operation member may be disposed over the second space and the outside of the housing through the through hole. The operation member may be movable between a braking position where the operation member causes the braking mechanism to interrupt rotation of a saw chain and a driving position where the operation member causes the braking mechanism not to interrupt the rotation of the saw chain. The braking mechanism may comprise a connecting member that moves in the second space in conjunction with movement of the operation member. The housing may include an opening communicating the first space to the second space.
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公开(公告)号：US10800065B2
公开(公告)日：2020-10-13
申请号：US16402258
申请日：2019-05-03
摘要： A hand-guided power tool has an internal combustion engine that is arranged in a power tool housing and drives a tool member of the power tool. A fuel tank and at least one electric component are provided. A control device that is an electronic control unit is connected to the at least one electric component and controls the at least one electric component. The power tool has a top face which, when parking the power tool in a usual parking position on a flat horizontal support surface, is facing upwardly. The electronic control unit has a plug contact and a connecting plug is plugged into the plug contact. The connecting plug is connected by a connecting line to the at least one electric component. The connecting plug is arranged on a top side of the control device which is facing upwardly in the usual parking position of the power tool.
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公开(公告)号：US10744670B2
公开(公告)日：2020-08-18
申请号：US15555177
申请日：2016-03-04
申请人： HUSQVARNA AB
摘要： A chainsaw (100) includes a power unit and a working assembly powered responsive to operation of the power unit. The working assembly includes a guide bar (120) around which a chain is rotatable. The guide bar (120) includes first and second side plates (200 and 210), a sprocket wheel (220), first and second shims (240 and 242), and first and second sealing members (244 and 245). The first and second side plates (200 and 210) each face other and extend away from a housing (110) to a nose. The sprocket wheel (220) is provided at the nose between the first and second side plates (200 and 210). The first and second shims (240 and 242) are disposed between the first and second side plates (200 and 210), respectively, and corresponding ones of first and second sides of the sprocket wheel (220). The first sealing member (244) is disposed between the first shim (240) and the first side of the sprocket wheel (220). The second sealing member (245) is disposed between the second shim (242) and the second side of the sprocket wheel (220).
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公开(公告)号：US10307931B2
公开(公告)日：2019-06-04
申请号：US15219225
申请日：2016-07-25
发明人： Neil Haney
摘要： The disclosure provides a method of oil delivery to a chainsaw chain blade using a gerotor pump in sequence with flow control valves to provide lubrication to the chain blade to reduce friction with the chainsaw bar guide and prevent overheating and damage to the chain blade or guide bar.
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公开(公告)号：US20180290329A1
公开(公告)日：2018-10-11
申请号：US15764144
申请日：2016-09-28
申请人： Ponsse Oyj
发明人： Markku HUTTUNEN , Toni KOHIO , Tero KAATRASALO , Martin GARCIA
IPC分类号： B27B17/02 , A01G23/091 , B27B17/12 , B27B17/14
摘要： The present disclosure relates to a chain saw of a wood handling device and to controlling the guide bar in it. The guide bar is attached to a turning frame rotatably arranged to a frame of the chain saw through a fastening arrangement. The fastening arrangement of the guide bar and the turning frame are joined by at least one guide for controlling the guide bar during movement along its longitudinal axis. The guide includes opposite slide guides with opposite sliding and mating surfaces that form a form-locking joint joining the fastening arrangement and turning frame together. This type of separate slide guide arranged in the chain saw is movable in at least one direction differing from the direction of travel allowed by the guide, which makes it possible to modify clearance between the sliding surface and mating surface.
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