Patents by Inventor Graham Gerhardt
Graham Gerhardt has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20220311258Abstract: A control device including a first shell; a battery pack mounting part; a first control unit, which is provided in the first shell and is used for cutting off power transmission from a battery pack to an electric power tool when the battery pack is abnormal; a first user operation unit, which is arranged on the first shell and is operated by a user to control the electric power tool; and a first interface, electrically connected to the first user operation unit. An electric power tool system comprises the control device and the electric power tool. The control device can be adapted to different types of electric power tools, and the control device is not provided with a control portion used for adjusting working parameter of the electric power tool, such that the control device can more flexibly match an upgraded new electric power tool.Type: ApplicationFiled: June 10, 2022Publication date: September 29, 2022Inventors: Harry Szommer, Warren Brown, Graham Gerhardt, Xiaoli Pang, Bing Liang, Jun Lu, Zhihan Yang
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Patent number: 11192270Abstract: A portable cutting tool includes a blade and a motor for driving the blade to rotate. The motor has a motor output shaft. A guard assembly includes an upper guard and a lower guard which is used for receiving the motor. A base is connected to the upper guard. The base further includes a front portion connected to the upper guard, a rear portion extending longitudinally, and a gripping portion disposed between the front portion and the rear portion. The blade shaft is perpendicular to the motor output shaft.Type: GrantFiled: September 28, 2018Date of Patent: December 7, 2021Assignee: Positec Power Tools (Suzhou) Co., Ltd.Inventors: Warren Brown, Harry Szommer, Graham Gerhardt
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Patent number: 11154974Abstract: The present embodiment discloses a hand-held tool and a clamping device thereof. The clamping device of a hand-held tool includes: a mounting base; a clamping unit configured to fasten a working tool in an axial direction; and an operation assembly, including an operating member and a driving member, where the operating member is capable of performing compound motion relative to the mounting base, and the operating member is operable to drive the driving member to selectively mate with and disengage from the clamping unit. In this way, the hand-held tool of the present embodiment has the clamping device. By way of compound motion, not only comfort of operation can be achieved, but also parts can be saved, thereby making the structure simpler and more reliable.Type: GrantFiled: August 31, 2016Date of Patent: October 26, 2021Assignee: Positec Power Tools (Suzhou) Co., Ltd.Inventors: Lianbao Wang, Hongfeng Zhong, Jingtao Xu, Warren Brown, Harry Szommer, Graham Gerhardt
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Patent number: 10946544Abstract: An oscillatory power tool that is capable of using various types of cutting tools is disclosed. The power tool includes an output shaft for mounting one of the cutting tools and driving the cutting tool in an oscillating rotary motion. An end of the output shaft has a driving section for engaging with a securing section of the cutting tool. The power tool further includes a fastener connected to the output shaft at the end and connectable to the securing section of the cutting tool for fastening the cutting tool to the end of the output shaft. The driving section has a fitting surface for contacting a surface of the securing section. Through a close fit between the friction surface and the surface of the securing section, the power tool can be connected with different types of cutting tools, which greatly improves the universality and convenience of the power tool.Type: GrantFiled: December 21, 2018Date of Patent: March 16, 2021Assignee: POSITEC POWER TOOLS (SUZHOU) CO., LTD.Inventors: Warren Brown, Harry Szommer, Graham Gerhardt, Hua Gu, Haiquan Wu, Hui Li
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Patent number: 10933433Abstract: A hand-held high-pressure cleaning machine includes: a housing, having a handle for grasping; functional components, including a motor and a pump driven by the motor; and a liquid inlet, disposed on the housing and capable of being connected to an external water source by a water pipe. The hand-held high-pressure cleaning machine further includes an adapter suitable to be connected between the liquid inlet and a portable container, and is connected to the external water source by the water pipe or connected to the portable container by the adapter. In the present invention, the portable container configured to hold liquid is mounted to the hand-held high-pressure cleaning machine by using the adapter, so that it can be flexibly moved together with the hand-held high-pressure cleaning machine. The present invention further provides an adapter suitable to be connected between a portable container and a hand-held spraying device.Type: GrantFiled: September 20, 2017Date of Patent: March 2, 2021Assignee: Positec Power Tools (Suzhou) Co., Ltd.Inventors: Graham Gerhardt, Brandon Martin, Thomas Duncan
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Publication number: 20190389087Abstract: A portable cutting tool includes a blade and a motor for driving the blade to rotate. The motor has a motor output shaft. A guard assembly includes an upper guard and a lower guard which is used for receiving the motor. A base is connected to the upper guard. The base further includes a front portion connected to the upper guard, a rear portion extending longitudinally, and a gripping portion disposed between the front portion and the rear portion. The blade shaft is perpendicular to the motor output shaft.Type: ApplicationFiled: September 28, 2018Publication date: December 26, 2019Applicant: Positec Tower Tools (Suzhou) Co., Ltd.Inventors: Warren Brown, Harry Szommer, Graham Gerhardt
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Publication number: 20190388917Abstract: A hand-held high-pressure cleaning machine includes: a housing, having a handle for grasping; functional components, including a motor and a pump driven by the motor; and a liquid inlet, disposed on the housing and capable of being connected to an external water source by a water pipe. The hand-held high-pressure cleaning machine further includes an adapter suitable to be connected between the liquid inlet and a portable container, and is connected to the external water source by the water pipe or connected to the portable container by the adapter. In the present invention, the portable container configured to hold liquid is mounted to the hand-held high-pressure cleaning machine by using the adapter, so that it can be flexibly moved together with the hand-held high-pressure cleaning machine. The present invention further provides an adapter suitable to be connected between a portable container and a hand-held spraying device.Type: ApplicationFiled: September 20, 2017Publication date: December 26, 2019Inventors: Graham Gerhardt, Brandon Martin, Thomas Duncan
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Publication number: 20190118402Abstract: An oscillatory power tool that is capable of using various types of cutting tools is disclosed. The power tool includes an output shaft for mounting one of the cutting tools and driving the cutting tool in an oscillating rotary motion. An end of the output shaft has a driving section for engaging with a securing section of the cutting tool. The power tool further includes a fastener connected to the output shaft at the end and connectable to the securing section of the cutting tool for fastening the cutting tool to the end of the output shaft. The driving section has a fitting surface for contacting a surface of the securing section. Through a close fit between the friction surface and the surface of the securing section, the power tool can be connected with different types of cutting tools, which greatly improves the universality and convenience of the power tool.Type: ApplicationFiled: December 21, 2018Publication date: April 25, 2019Applicant: POSITEC POWER TOOLS (SUZHOU) CO., LTD.Inventors: Warren Brown, Harry Szommer, Graham Gerhardt, Hua Gu, Haiquan Wu, Hui Li
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Publication number: 20190030744Abstract: A portable cutting tool includes a blade and a motor for driving the blade to rotate. The motor has a motor output shaft. A guard assembly includes an upper guard and a lower guard which is used for receiving the motor. A base is connected to the upper guard. The base further includes a front portion connected to the upper guard, a rear portion extending longitudinally, and a gripping portion disposed between the front portion and the rear portion. The blade shaft is perpendicular to the motor output shaft.Type: ApplicationFiled: September 28, 2018Publication date: January 31, 2019Applicant: Positec Tower Tools (Suzhou) Co., Ltd.Inventors: Warren Brown, Harry Szommer, Graham Gerhardt
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Patent number: 10189174Abstract: A portable cutting tool includes a blade and a motor for driving the blade to rotate. The motor has a motor output shaft. A guard assembly includes an upper guard and a lower guard which is used for receiving the motor. A base is connected to the upper guard. The base further includes a front portion connected to the upper guard, a rear portion extending longitudinally, and a gripping portion disposed between the front portion and the rear portion. The blade shaft is perpendicular to the motor output shaft.Type: GrantFiled: January 13, 2015Date of Patent: January 29, 2019Assignee: POSITEC POWER TOOLS (SUZHOU) CO., LTD.Inventors: Warren Brown, Harry Szommer, Graham Gerhardt
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Publication number: 20180243894Abstract: The present embodiment discloses a hand-held tool and a clamping device thereof. The clamping device of a hand-held tool includes: a mounting base; a clamping unit configured to fasten a working tool in an axial direction; and an operation assembly, including an operating member and a driving member, where the operating member is capable of performing compound motion relative to the mounting base, and the operating member is operable to drive the driving member to selectively mate with and disengage from the clamping unit. In this way, the hand-held tool of the present embodiment has the clamping device. By means of compound motion, not only comfort of operation can be achieved, but also parts can be saved, thereby making the structure simpler and more reliable.Type: ApplicationFiled: August 31, 2016Publication date: August 30, 2018Inventors: Lianbao Wang, Hongfeng Zhong, Jingtao Xu, Warren Brown, Harry Szommer, Graham Gerhardt
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Patent number: 9409273Abstract: A combination of electric tools includes a first electric tool and a second electric tool respectively having an independent power supply. The second electric tool starts working automatically responding to the startup of the first electric tool. Thereby the second electric tool starts automatically after the first electric tool is started to operate by a user without an extra operation of the user, which is convenient to the user.Type: GrantFiled: December 18, 2012Date of Patent: August 9, 2016Assignee: POSITEC POWER TOOLS (SUZHOU) CO.Inventors: Warren Brown, Harry Szommer, Graham Gerhardt
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Publication number: 20150336287Abstract: The present invention provides a portable cutting tool, including: a blade; a motor used for driving the blade to rotate, where the motor has a motor output shaft; a guard assembly that includes an upper guard and a lower guard which is used for receiving the motor; a base connected to the upper guard, where the base further includes a base bottom portion used for abutting against a workpiece; and a housing that includes a front portion connected to the upper guard, a rear portion extending longitudinally, and a gripping portion disposed between the front portion and the rear portion, where the blade shaft is perpendicular to the motor output shaft. In this manner, after an operator grips the gripping portion, the portable cutting tool is in a relatively stable state, and a cutting operation can be performed easily, making the operation more comfortable.Type: ApplicationFiled: January 13, 2015Publication date: November 26, 2015Applicant: POSITEC POWER TOOLS (SUZHOU) CO., LTDInventors: Warren Brown, Harry Szommer, Graham Gerhardt
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Patent number: 9067267Abstract: A worktable including an opening and an upper surface for supporting a workpiece; a supporting unit for supporting the worktable; a cutting mechanism mounted on a lower surface of the worktable and contained within the supporting unit including: a motor for outputting a rotation motion; a reciprocating rod driving a saw blade moving reciprocately through the opening; a motion conversion mechanism converting the rotation motion of the motor into a reciprocating motion of the reciprocating rod; and a saw blade clamp for clamping and releasing the saw blade; the saw blade clamp including an operating element which is disposed on the external surface of the worktable or the supporting unit.Type: GrantFiled: August 9, 2010Date of Patent: June 30, 2015Assignee: POSITEC POWER TOOLS CO., LTD.Inventors: Warren Brown, Graham Gerhardt, Harry Szommer, Cikuan Jin, Mingming He, Baoling Gong
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Patent number: 9032630Abstract: A vegetation pruning device includes a cutting element; a guide bar for supporting the cutting element, the guide bar having a guide bar plane, the guide bar being pivotable in the guide bar plane about a fixed axis; a motor having a motor shaft for rotatably driving the cutting element; a motor housing for receiving the motor; a guiding mechanism connected to the motor housing, the guiding mechanism having a longitudinal axis; a handle assembly operable to move linearly along the longitudinal axis; and a transmission device for connecting the handle assembly to the guide bar through, the transmission device converting a linearly movement of the handle assembly to a pivoting movement of the guide bar, the cutting element thereby approaching or withdrawing from a workpiece to be sawn.Type: GrantFiled: February 11, 2010Date of Patent: May 19, 2015Assignee: Positec Power Tools (Suzhou) Co., Ltd.Inventors: Warren Brown, Harry Szommer, Graham Gerhardt
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Publication number: 20140290072Abstract: An oscillatory power tool comprising: an output shaft for mounting a cutting tool and driving the cutting tool in an oscillating rotary motion; a fastener for fastening the cutting tool to the output shaft; the cutting tool comprising a securing section being capable of connecting with the output shaft; a driving section disposed on the free end of the output shaft for engaging with the securing section of the cutting tool; the driving section having a friction surface for contacting a surface of the securing section. Through close fit between the friction surface and the upper surface of the securing section, the oscillatory power tool can be connected with different types of cutting tools, thus greatly improving the universality and convenience of the oscillatory power tool.Type: ApplicationFiled: March 31, 2014Publication date: October 2, 2014Inventors: Warren Brown, Harry Szommer, Graham Gerhardt, Hua Gu, Haiquan Wu, Hui Li
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Publication number: 20140008087Abstract: A combination of electric tools includes a first electric tool and a second electric tool respectively having an independent power supply. The second electric tool starts working automatically responding to the startup of the first electric tool. Thereby the second electric tool starts automatically after the first electric tool is started to operate by a user without an extra operation of the user, which is convenient to the user.Type: ApplicationFiled: December 18, 2012Publication date: January 9, 2014Applicant: POSITEC POWER TOOLS (SUZHOU) CO., LTD.Inventors: Warren Brown, Harry Szommer, Graham Gerhardt
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Publication number: 20130180747Abstract: The power tool includes a housing, an output shaft for fixing and driving a head to work, the output shaft being provided with a receiving portion extending out of the housing, a locking member for locking the head on the receiving portion of the output shaft, a fastener supported on the output shaft for fastening the locking member, and a driving mechanism rotatably displaced on the housing. The driving mechanism is operable to rotate along a first direction to make the fastener and the locking member screwed, and also is operable to rotate along a direction opposite to the first direction to loosen the fastener and the locking member. The power tool can assemble or disassemble the head quickly and provide a stable axial press to avoid the slippage of the head without any other auxiliary tools. Meanwhile, the operation method of the power tool is easy and reliable.Type: ApplicationFiled: July 26, 2012Publication date: July 18, 2013Applicant: POSITEC POWER TOOLS (SUZHOU) CO., LTDInventors: Warren Brown, Harry Szommer, Graham Gerhardt, Hua Gu, Hui Li, Dean Lu
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Publication number: 20130047443Abstract: The present invention provides a portable cutting tool, which comprises: a blade for cutting workpieces, the blade having a blade plane; a housing; and a moveable guard installed on the housing, wherein the guard is provided with a blade through-hole through which the blade passes, the guard moves between a first position and a second position with respect to the housing, when the guard is located at the first position, the blade does not pass through the blade through-hole, and when the guard is located at the second position, the blade passes through the blade through-hole; either the guard or the housing is provided with an arc guide rail, and the other has position-limiting members which are matched with the arc guide rail to limit the displacement of the guard along the normal direction of the arc guide rail.Type: ApplicationFiled: September 21, 2010Publication date: February 28, 2013Inventors: Warren Brown, Graham Gerhardt, Harry Szommer, Yu Zhao, Zhou Zhongya
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Patent number: 8276895Abstract: The present invention relates to a clamping device comprising an elongate support structure carrying a fixed jaw and a movable jaw and an advancing clamping mechanism mounted on the support structure for advancing the movable jaw toward the fixed jaw in a longitudinal direction. The clamping device further comprises a transportation mechanism for convenient transportation.Type: GrantFiled: March 28, 2008Date of Patent: October 2, 2012Assignee: Positec Power Tools (Suzhou) Co., Ltd.Inventors: Warren Brown, Graham Gerhardt, Harry Szommer, Guojun Chen, Quangang Liu