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公开(公告)号：US20200269409A1
公开(公告)日：2020-08-27
申请号：US16647896
申请日：2018-09-28
Applicant: Walbro LLC
Inventor： Matthew A. Braun , Cyrus M. Healy , Robby L. Linton
Abstract: A power tool may include an engine, a tool driven for movement by the engine, a brake mechanism coupled to the tool, a charge forming device coupled to the engine and a transmission member operably coupled to the brake mechanism and a throttle valve of the charge forming device. The brake mechanism inhibits movement of the tool in an engaged position of the brake mechanism and permits movement of the tool in a disengaged position of the brake mechanism. The charge forming device is coupled to the engine to provide a combustible fuel and air mixture to the engine, and the throttle valve is movable between a first position and a second position. The transmission member is operably coupled to the brake mechanism and the throttle valve so that the throttle valve is moved away from the first position when the brake mechanism is moved to the engaged position.
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公开(公告)号：US11073123B2
公开(公告)日：2021-07-27
申请号：US16316756
申请日：2017-07-12
Applicant: Walbro LLC
Inventor： Martin N. Andersson , Matthew A. Braun , Cyrus M. Healy , Shunya Nakamura , Tsuyoshi Watanabe
Abstract: In at least some implementations, a method of maintaining an engine speed below a first threshold, includes: (a) determining an engine speed; (b) comparing the engine speed to a second threshold that is less than the first threshold; (c) allowing an engine ignition event to occur during a subsequent engine cycle if the engine speed is less than the second threshold; and (d) skipping at least one subsequent engine ignition event if the engine speed is greater than the second threshold. In at least some implementations, the second threshold is less than the first threshold by a maximum acceleration of the engine after one ignition event so that an ignition event when the engine speed is less than the second threshold does not cause the engine speed to increase above the first threshold.
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Patent Agency Ranking
公开(公告)号：US20170370328A1
公开(公告)日：2017-12-28
申请号：US15622583
申请日：2017-06-14
Applicant: Walbro LLC
Inventor： Matthew A. Braun , Eric L. King
IPC: F02M7/14
CPC classification number: F02M7/14
Abstract: A carburetor with a body with a cavity in which an adjustable fuel valve is received. To inhibit access to and manual adjustment of the valve, a cover may overlay at least a portion of the adjustable valve. In some forms, a releasable lock plate may be received between the cover and the adjustable valve. Specialty tools may release the lock plate and adjust the valve.
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公开(公告)号：US20220025838A1
公开(公告)日：2022-01-27
申请号：US17496184
申请日：2021-10-07
Applicant: Walbro LLC
Inventor： Matthew A. Braun , Eric L. King
IPC: F02M7/14
Abstract: In at least some implementations, a locking plate may be received between the cover plate and the adjustable valve and be movable to a first position permitting access to the adjustable valve and a second position inhibiting or preventing access to the adjustable valve. In some implementations, a latch assembly may releasably retain the locking plate in its second position. The latch assembly may include a finger carried by the locking plate and releasably engageable with a stop when the locking plate is in its second position.
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公开(公告)号：US20190293046A1
公开(公告)日：2019-09-26
申请号：US16316756
申请日：2017-07-12
Applicant: Walbro LLC
Inventor： Martin N. Andersson , Matthew A. Braun , Cyrus M. Healy , Shunya Nakamura , Tsuyoshi Watanabe
Abstract: In at least some implementations, a method of maintaining an engine speed below a first threshold, includes: (a) determining an engine speed; (b) comparing the engine speed to a second threshold that is less than the first threshold; (c) allowing an engine ignition event to occur during a subsequent engine cycle if the engine speed is less than the second threshold; and (d) skipping at least one subsequent engine ignition event if the engine speed is greater than the second threshold. In at least some implementations, the second threshold is less than the first threshold by a maximum acceleration of the engine after one ignition event so that an ignition event when the engine speed is less than the second threshold does not cause the engine speed to increase above the first threshold.
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公开(公告)号：US11761403B2
公开(公告)日：2023-09-19
申请号：US17496184
申请日：2021-10-07
Applicant: Walbro LLC
Inventor： Matthew A. Braun , Eric L. King
CPC classification number: F02M7/14 , F02M3/10 , F02M2003/105 , F16B41/005
Abstract: In at least some implementations, a locking plate may be received between the cover plate and the adjustable valve and be movable to a first position permitting access to the adjustable valve and a second position inhibiting or preventing access to the adjustable valve. In some implementations, a latch assembly may releasably retain the locking plate in its second position. The latch assembly may include a finger carried by the locking plate and releasably engageable with a stop when the locking plate is in its second position.
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公开(公告)号：US11187191B2
公开(公告)日：2021-11-30
申请号：US15622583
申请日：2017-06-14
Applicant: Walbro LLC
Inventor： Matthew A. Braun , Eric L. King
Abstract: A carburetor with a body with a cavity in which an adjustable fuel valve is received. To inhibit access to and manual adjustment of the valve, a cover may overlay at least a portion of the adjustable valve. In some forms, a releasable lock plate may be received between the cover and the adjustable valve. Specialty tools may release the lock plate and adjust the valve.
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