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公开(公告)号：US2659399A
公开(公告)日：1953-11-17
申请号：US25937051
申请日：1951-12-01
申请人： DOUG JOE V
发明人： DOUG JOE V
IPC分类号： B27G19/04
CPC分类号： B27G19/04
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公开(公告)号：US2628424A
公开(公告)日：1953-02-17
申请号：US18599150
申请日：1950-09-21
申请人： JOHN MCMILLAN , HELEN MCMILLAN
发明人： JOHN MCMILLAN , HELEN MCMILLAN
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公开(公告)号：US20240359356A1
公开(公告)日：2024-10-31
申请号：US18647689
申请日：2024-04-26
申请人： Black & Decker Inc
摘要： A device may include a first motor including a first motor output shaft coupled to a first pinion. A device may include a second motor including a second motor output shaft coupled to a second pinion. A device may include a transmission including: a master gear configured to engage the first pinion and the second pinion, an input pulley coupled to the master gear, the input pulley having a first diameter, and an output pulley coupled to an output shaft configured to rotate a saw blade, the output pulley having a second diameter that is smaller than the first diameter.
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公开(公告)号：US20240227045A9
公开(公告)日：2024-07-11
申请号：US18546835
申请日：2022-02-18
申请人： Festool GmbH
CPC分类号： B23D59/005 , B27G19/04
摘要： Circular saws having a blade that moves relative to a stationary base structure during operative use of the circular saws to cut a workpiece and methods of detecting a kickback condition of such circular saws. The circular saws include a base structure, a user-actuated assembly, an attachment structure, and a controller. The attachment structure is configured to permit constrained relative motion between the base structure and the user-actuated assembly in a motion direction and during operative use of the circular saw to cut the workpiece. A motion sensor is configured to generate a motion signal indicative of motion of the user-actuated assembly along the motion direction. The controller is programmed to initiate a kickback response of the circular saw responsive to the motion signal being indicative of a kickback condition of the circular saw.
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公开(公告)号：US12017291B2
公开(公告)日：2024-06-25
申请号：US17681653
申请日：2022-02-25
申请人： JPL GLOBAL, LLC
发明人： Paul W. Guth
CPC分类号： B23D59/006 , B27G19/04
摘要： An improved design for a dust shroud providing an airflow conduit for collecting dust off a work piece and a saw blade. The dust shroud is configured with either one or two extending and telescoping lower rigid jaws that are durable and can engage a work piece at different angles. A novel roller is additionally provided for moving along a work piece.
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公开(公告)号：US11992908B2
公开(公告)日：2024-05-28
申请号：US16349895
申请日：2017-11-15
发明人： Steven Terpstra
CPC分类号： B23Q11/0046 , B25F5/02 , B27G19/04 , B23D59/006 , B23Q11/1023 , B28D7/02 , B28D7/04 , Y10T83/207
摘要： An extraction apparatus (20) for a cutting machine (10). The extraction apparatus (20) comprises first and second portions (21, 22) rotatable one relative to the other for angular movement between two opposed positions. A slidable coupling (27) defines a fluid flow path (29) for fluid communication between the first and second portions (21, 22) during said angular movement between the two opposed positions, whereby fluid can flow from the interior (45) of the first portion (21) into the second portion (22). The slidable coupling (27) comprises first and second coupling sections (61, 62) slidable one with respect to the other. The second coupling section (62) is hollow to define an open interior (63). The first coupling section (61) defines a duct (65) opening onto the interior (63) of the second coupling section (62), whereby the duct (65) and the interior (63) of the second coupling section (62) cooperate to define the fluid flow path (29).
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公开(公告)号：US11684985B2
公开(公告)日：2023-06-27
申请号：US16969445
申请日：2019-02-19
申请人： MAKITA CORPORATION
发明人： Tatsuo Nakashima , Kenji Nose , Takuji Kimura
摘要： A suspending member, such as a tether strap or the like, may by connected to improve convenience for an operator. The function of the suspending member shall be reliably performed by clearly notifying the user when the connecting part for connecting the suspending member is damaged. A ring-shaped notification member is incorporated in a connecting part for connecting the suspending member. The suspending member is inserted into both of a connecting hole in a connecting part and a notification member so as to be connected. When an end of a handle portion breaks due to long-term use, the notification member is pulled out such that the damage of the connecting part is notified.
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公开(公告)号：US20230037512A1
公开(公告)日：2023-02-09
申请号：US17881146
申请日：2022-08-04
申请人： BLACK & DECKER INC.
摘要： A cut off saw including a housing; a motor; a gear case, the gear case having an end face which extends from the side of the housing; an output spindle for a cutting blade which passes through and extends from the end face of the gear case which is rotationally driven by the motor when the motor is activated; a guard rotatably mounted on the end face of the gear case and which surrounds at least part of the periphery of a cutting blade when the cutting blade is mounted on the output spindle; a side wall of the guard faces the end face and includes a series of recesses which face towards the end face; the end face facing towards the side wall of the guard includes a series of projections which are capable of aligning with and engaging with the recesses.
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公开(公告)号：US20230027610A1
公开(公告)日：2023-01-26
申请号：US17783052
申请日：2020-12-13
申请人： Festool GmbH
发明人： Tobias Höfer , Martin Werbach , Patrick Schnelle , Philipp Sobl
摘要： A handheld machine saw having a saw assembly, which has a saw toolholder for a saw tool and a saw drive motor for driving the saw toolholder, and having a guide device, which has a guide body having a guide surface extending along a longitudinal axis for guiding the handheld machine saw along a working direction on a workpiece or a guide rail, wherein the handheld machine saw has a scoring assembly, which is arranged in front of the saw assembly on the guide device with respect to the working direction, having a scorer toolholder for a scoring tool and having a scoring drive for driving the scorer toolholder, wherein a score upstream from the saw cut to be introduced in the working direction can be introduced into the workpiece by means of the scoring tool protruding in front of the guide surface in scoring operation of the handheld machine tool.
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公开(公告)号：US20230008308A1
公开(公告)日：2023-01-12
申请号：US17782706
申请日：2020-12-13
申请人： Festool GmbH
发明人： Philipp Sobl , Wolfgang Spengler , Marco Haible
摘要： A mobile handheld machine saw having a saw assembly, which has a saw toolholder for a saw tool and a saw drive motor for driving the saw toolholder and having a guide device, wherein the handheld machine saw has a scoring assembly, which is arranged in front of the saw assembly on the guide device with respect to the working direction, having a scorer toolholder for a scoring tool and having a scoring drive for driving the scorer toolholder, wherein a score upstream from the saw cut to be introduced in the working direction can be introduced into the workpiece by means of the scoring tool protruding in front of the guide surface in scoring operation of the handheld machine tool. It is provided that the scoring assembly has a scorer dust extraction device for extracting particles arising during the introduction of the score by the scoring tool into the workpiece.
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