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    Vibratory plate and its engine
    3.
    发明授权
    Vibratory plate and its engine 有权

    公开(公告)号：US11859532B2

    公开(公告)日：2024-01-02

    申请号：US17525229

    申请日：2021-11-12

    申请人： Alexandra Leonidovna Zhmudyak ,  Leonid Moiseevich Zhmudyak

    发明人： Alexandra Leonidovna Zhmudyak ,  Leonid Moiseevich Zhmudyak

    IPC分类号： F02B71/04 ,  F02B75/16 ,  F02B63/02 ,  E01C19/40 ,  E02D3/046

    CPC分类号： F02B71/04 ,  E01C19/40 ,  E02D3/046 ,  F02B63/02 ,  F02B75/16

    摘要： In vibratory plates (vibratory plate compactor machine), the reciprocating movement of an engine piston is converted into rotation of the crankshaft, and the latter is converted into rotation of an eccentric rotary shaft of vibrator unit, which create a periodic force that leads to reciprocating movement of the plate. Such a vibratory plate is complicated. It is proposed to use a free-piston engine with one piston as the engine for a vibratory plate. In this free piston engine, the piston moves reciprocally, and the cylinder performs reciprocating movements opposite to the movements of the piston. The cylinder is mounted vertically and fixed to the plate. In each engine cycle the gas pressure acts on the piston and cylinder. After combustion, the piston moves up and the cylinder moves down. Since the cylinder is fixed to the plate, it also moves downward and compacts soil, gravel, etc.

    Internal combustion engine with electric starting system
    5.
    发明授权
    Internal combustion engine with electric starting system 有权

    公开(公告)号：US11578689B2

    公开(公告)日：2023-02-14

    申请号：US17394526

    申请日：2021-08-05

    申请人： BRIGGS & STRATTON, LLC

    发明人： David W. Procknow ,  Mark Meyer

    IPC分类号： F02N11/14 ,  A01D34/68 ,  F02N15/02 ,  F02B63/02 ,  F02N11/00 ,  F02N15/00 ,  F02N11/08

    摘要： An internal combustion engine includes an engine block, a blower housing configured to direct cooling air to the engine block, an electric starting system, and a crankshaft configured to rotate about a crankshaft axis. The electric starting system includes an electric motor and an energy storage device located within the blower housing. The energy storage device is electrically coupled to the electric motor to power the electric motor, and is positioned above the crankshaft. When the starter motor is activated, the electric starting system rotates the crankshaft to rotate the engine for starting.

    Two-Stroke Engine, and Handheld Power Tool
    6.
    发明申请
    Two-Stroke Engine, and Handheld Power Tool 有权

    公开(公告)号：US20220298961A1

    公开(公告)日：2022-09-22

    申请号：US17619639

    申请日：2020-06-15

    申请人： HUSQVARNA AB

    发明人： Markus Hedberg ,  Niklas Enander ,  Tobias Stalfors

    IPC分类号： F02B63/02 ,  F02B33/04 ,  F02B25/22

    摘要： A two-stroke engine (1) is disclosed comprising a cylinder (2), a piston (3) arranged to reciprocate in the cylinder (2), a crankcase (5), a fuel injector (7) configured to inject fuel into the crankcase (5), an air inlet (9) connected to the crankcase (5), and a stratified scavenging intake (11) connected to the cylinder (2). The engine (1) comprises a throttle (13) configured to control the amount of air supplied to the air inlet (9) and to the stratified scavenging intake (11). The present disclosure further relates to handheld power tool (50) comprising an engine (1).

    Carburetor system for a carburetor engine
    8.
    发明授权
    Carburetor system for a carburetor engine 有权

    公开(公告)号：US11131271B2

    公开(公告)日：2021-09-28

    申请号：US14110604

    申请日：2011-04-15

    申请人： Fredrik Lindström ,  Pär Martinsson ,  Magnus Ottosson ,  Rikard Rydberg

    发明人： Fredrik Lindström ,  Pär Martinsson ,  Magnus Ottosson ,  Rikard Rydberg

    IPC分类号： F02M17/00 ,  F02M1/16 ,  F02M17/04 ,  F02B63/02

    摘要： A fuel supply system for small two-stroke internal combustion engines for e.g. chain saws, line trimmers and similar hand-held power-tools including a diaphragm carburetor (20) equipped with a purging system (80a, 81a) or priming system (80b, 81b) for facilitating starting of the engine (1). Downstream of the diaphragm (30), the carburetor has a fuel valve (60) with a fuel cavity (73), which when the valve is not closed being connected via a fuel conduit (37) to a fuel nozzle (35, 36) in a main air passage (21) in the carburetor. The purging system or priming system including a fuel line (80a; 80b), which is provided with a manually operated pump (81a; 81b) and is connected between a fuel tank (26) and either the fuel cavity (73) or the fuel conduit (37).

    FUEL-POWERED SETTING DEVICE AND METHOD FOR OPERATING SUCH A SETTING DEVICE
    10.
    发明申请
    FUEL-POWERED SETTING DEVICE AND METHOD FOR OPERATING SUCH A SETTING DEVICE 审中-公开

    公开(公告)号：US20200276692A1

    公开(公告)日：2020-09-03

    申请号：US16063818

    申请日：2016-12-20

    申请人： Hilti Aktiengesellschaft

    发明人： Iwan WOLF ,  Dominik SCHMIDT ,  Tilo DITTRICH ,  Peter BRUGGMUELLER ,  Norbert HEEB

    IPC分类号： B25C1/08 ,  F02B19/10 ,  F02B19/18 ,  F02B63/02

    摘要： The invention relates to a fuel-powered setting device for driving securing elements into a substrate, comprising at least one main combustion chamber for a fuel, a drive piston that can be driven out of the main combustion chamber in a setting direction by means of expandable gases, and a prechamber with which an ignition arrangement is associated and in which a pressure acting on the main combustion chamber can build up prior to a fuel-air mixture being ignited in said main combustion chamber, wherein the prechamber is or can be connected to surroundings of the prechamber via at least one passage opening able to be closed by a control device. To improve efficiency and/or functionality when driving in securing elements, the control device and the main combustion chamber are linked by a control pressure connection.