To Vary Angle Between Saw And Guide Plate Patents (Class 30/376)
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Patent number: 11883891Abstract: A shuttle assembly for use with a saw guide track is provided. The shuttle assembly includes a base plate to which a saw is mounted. An alignment spacer extends laterally outward from the base plate and provides an abutment for locating a saw blade of the saw while the saw is being secured to the shuttle assembly.Type: GrantFiled: March 9, 2021Date of Patent: January 30, 2024Assignee: Nomis LLCInventor: Taylor James Hall
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Patent number: 11780071Abstract: There is provided a power tool in which impact applied to a power transmission portion can be mitigated to thereby suppress components constituting the power transmission portion from being deformed and damaged. The power tool includes a brushless motor 3 having a rotation shaft portion 31 rotatable about a rotation axis A1, a housing 2 accommodating therein the brushless motor 3, a power transmission portion 6 configured to receive a rotation force of the rotation shaft portion 31 and to transmit a driving force based on the rotation force, and a driven portion 7 configured to be driven by receiving the transmitted driving force. The rotation shaft portion 31 is supported by the housing 2 so as to be movable relative to the housing 2 in an axial direction of the rotation axis A1.Type: GrantFiled: November 30, 2018Date of Patent: October 10, 2023Assignee: KOKI HOLDINGS CO., LTD.Inventors: Yasutaka Shimizu, Yoshikazu Yokoyama, Naoki Tadokoro, Ryosuke Nakano
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Patent number: 11613040Abstract: A method of aligning a saw unit and a base. The saw unit further includes a front bevel angle adjustment bracket proximate a front end of the base and a rear bevel angle adjustment bracket proximate a rear end of the base. The saw unit further comprises a first fastener extending through a first elongated slot in one of the base or the front bevel angle adjustment bracket and a second fastener extending through a second elongated slot in one of the base or the rear bevel angle adjustment bracket. Each of the first and second elongated slots extends along a lateral axis oriented transverse to the longitudinal axis of the base to permit lateral adjustment of the saw unit relative to the base.Type: GrantFiled: December 2, 2021Date of Patent: March 28, 2023Assignee: TECHTRONIC CORDLESS GPInventor: Ronald C. McCurry
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Patent number: 11493204Abstract: A burner gun includes a case, an ignition device, a switch and a operational part. By the switch and an operation rail in the case, the ignition device can only be activated by correctly operating the switch and pulling the operational part. The ignition device cannot activated by pulling the operational part if the switch is not correctly operated, so that the ignition device is prevented from being activated unintentionally to reduce possibility of causing fire disasters.Type: GrantFiled: November 29, 2020Date of Patent: November 8, 2022Assignee: REKROW INDUSTRIAL INC.Inventor: Ta-Jen He
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Patent number: 11407138Abstract: An electric tool includes a functional piece, a motor, a case and a fan. The case includes a motor case portion. An airflow inlet and an airflow outlet are formed in the case. When the fan operates, an airflow at the airflow inlet is taken out and is directed to the airflow outlet after the airflow flows through the motor. The motor case portion includes an encircling portion which encircles the motor and an end portion arranged on one end of the encircling portion. A stopping piece stops the airflow from flowing back from one side of the motor to the other side.Type: GrantFiled: June 17, 2020Date of Patent: August 9, 2022Assignee: Nanjing Chervon Industry Co., Ltd.Inventors: Fukinuki Masatoshi, Xin Yang, Bing Lu, Songsong Lu
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Patent number: 11325215Abstract: A guided circular saw system having a track and a ramp that is connected to a benchtop by a pair of hinge members. Hinge members are formed of a top section, a middle section and a bottom section and facilitate raising and lowering of the track in a quick and easy manner without tools. The track is raised to facilitate placing a workpiece under the track and then the track is lowered in place thereby engaging and holding the workpiece in place. A sled attached to a cutting device and the sled and cutting device slides along the track thereby cutting the workpiece. The track includes sacrificial grip strips that extend along the sides of the track and include an upper layer of material that is rigid and a lower layer of material that is compressible and has a high coefficient of friction and thereby holds the workpiece in place.Type: GrantFiled: January 17, 2020Date of Patent: May 10, 2022Assignee: KREG ENTERPRISES, INC.Inventor: Scott L. Clark
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Patent number: 11305452Abstract: A power miter saw includes a turntable being rotatable on a base; a bevel post secured to a support assembly and pivotably connected to the base, the bevel post including a stepped-diameter channel, a structural member, and a complementary member; a curved graduated board disposed on the turntable and including spaced apertures; a shaft including an enlargement proximate a head, and a threaded end, the shaft inserted through the channel with the head disposed in the aperture; a biasing member put on the shaft and anchored in the channel; and an activation handle including a rod configured to pivotably move between a first position of the structural member and a second position of the structural member, a pivot hole with the threaded end passing through, and a projection engaged with the complementary member in a locked position; and an adjustable nut secured to the threaded end.Type: GrantFiled: May 25, 2021Date of Patent: April 19, 2022Inventor: Chin-Chin Chang
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Patent number: 11226608Abstract: A system for machining a workpiece, comprising a hand-held power tool having a drive motor, a tool holder, which can be driven by the drive motor, for a working tool for machining the workpiece, and a guide element with a guide surface for guiding the hand-held power tool on the workpiece, having a marker detection device for detecting coordinate data of at least one workpiece marker of the workpiece, wherein the hand-held power tool has guide means for guiding the working tool along the workpiece according to the coordinate data of the at least one workpiece marker. The marker detection device has an optical and/or mechanical reference which can be positioned on and/or directly next to the at least one workpiece marker.Type: GrantFiled: October 26, 2018Date of Patent: January 18, 2022Assignee: FESTOOL GMBHInventors: Marc Rusch, Matthias Kübeler
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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: 11141804Abstract: A power tool includes a motor; a fan configured to be rotated by the motor to generate a cooling air; a housing accommodating therein the motor and the fan and defusing an air passage for the cooling air; an output shaft rotatable by the motor; and a transmission mechanism configured to transmit rotation of the motor to the output shaft. An end bit being attachable to and detachable from the output shaft. The transmission mechanism includes an intermediate shaft provided in the housing, a first belt transmitting a rotational force of the motor to the intermediate shaft, a second belt transmitting a rotational force of the intermediate shaft to the output shaft, and a rotation member transmitting a rotational force of the second belt to the output shaft. The first belt and the second belt are positioned inside a space through which the cooling air passes.Type: GrantFiled: October 27, 2017Date of Patent: October 12, 2021Assignee: KOKI HOLDINGS CO., LTD.Inventors: Yuuichi Toyoshima, Takeru Kumakura, Yoshitaka Sekine
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Patent number: 11007586Abstract: Provided is a portable cutter wherein the entire base has increased strength. This portable cutter is provided with: a body having a prime mover and a saw blade which is driven by the prime mover; a base having a through-hole through which the saw blade protrudes and sliding on a material to be cut; and a stand which rises from the base and to which the body is connected. If the direction in which cutting progresses is designated as a front-rear direction, a rib extending in the front-rear direction is provided to the base. The stand is configured such that, in the left-right direction, the stand is either located outside a region in which the through-hole is formed, or extended to the outside of the region. The positions, in the front-rear direction, of the stand and the rib partially overlap each other.Type: GrantFiled: November 22, 2017Date of Patent: May 18, 2021Assignee: Koki Holdings Co., Ltd.Inventor: Shinji Kuragano
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Patent number: 10821529Abstract: A power tool assembly includes an arbor shaft configured to support a shaping device, a belt operably connected to the arbor shaft and configured to rotate the arbor shaft, a motor including a power shaft operably connected to the belt through a motor end pulley, and a positioning device operably connected to the motor, the positioning device configured to rotate the motor about a motor mounting axis of rotation which is offset from an axis of rotation of the motor end pulley, thereby modifying a tension of the belt.Type: GrantFiled: March 4, 2016Date of Patent: November 3, 2020Assignees: Robert Bosch Tool Corporation, Robert Bosch GmbHInventor: Robert S. Doumani
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Patent number: 10668644Abstract: The dust proof circular saw has a main body with a rotating disc cutter blade and a cover fixed to the body to cover a blade outer radial periphery part. The body is supported by a base such that an angle of the body in the up-down and right-left directions can be adjusted at a base upper side. A further blade outer radial periphery is covered by an auxiliary cover. The auxiliary cover covers a gap between the fixed cover and the base. The auxiliary cover is moved by a mechanism relative to the body in accordance with an angle of the circular saw main body relative to the base in the up-down direction. The auxiliary cover is pivotally connected to the base, and is pivoted around a laterally tilting support shaft in the right-left direction by an interlock mechanism in accordance with a body angle in the right-left direction.Type: GrantFiled: August 15, 2017Date of Patent: June 2, 2020Assignee: MAKITA CORPORATIONInventors: Katsumi Okouchi, Yohei Ogino
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Patent number: 10611047Abstract: A cutting length display device for a hand-held machine tool includes at least one display unit and a cable system unit. The at least one display unit includes at least one movably mounted display element for displaying at least one position of a cutting edge of a machining tool on a workpiece configured to be machined depending on a set cutting depth of the machining tool. The cable system unit is configured to change a position of the at least one display element depending on the set cutting depth of the machining tool.Type: GrantFiled: October 24, 2016Date of Patent: April 7, 2020Assignee: Robert Bosch GmbHInventors: Thorsten Kuehn, Thomas Ziegler, Michael Wall, Joerg Maute
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Patent number: 10471624Abstract: A device for setting the miter angle of a machine tool is disclosed. The device includes a clamping block having at least one slot, and a pivot lever on which the machine tool can be mounted and which is pivotable about a pivot point relative to the clamping block between a minimum and a maximum miter angle. The slot includes at least two stop elements offset relative to one another. A setting mechanism includes a lever element for the selection of a maximum miter angle, where the lever element includes a mating stop element is alignable in such a way corresponding to the rotational alignment of the lever element that the mating stop element is able to strike the respective stop element in accordance with the selected maximum miter angle and by which the pivoting movement of the pivot lever relative to the clamping block can be limited.Type: GrantFiled: February 11, 2015Date of Patent: November 12, 2019Assignee: Hilti AktiengesellschaftInventor: Konstantin Baxivanelis
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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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Patent number: 10173345Abstract: A separation lock member is provided in a main body cover. When a fixing cover is rotated with respect to the main body cover at a predetermined opening/closing angle (opening angle ?1) and then an unlock operation of the separation lock member is performed, a rotation support shaft can be separated from a support groove 23a, such that the main body cover can be separated from the fixing cover.Type: GrantFiled: June 8, 2016Date of Patent: January 8, 2019Assignee: MAKITA CORPORATIONInventors: Fumitoshi Numata, Akihiro Goto
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Patent number: 9694508Abstract: A saw assembly includes a drive member, a motor, a housing, a foot, a spring, a first clamp component, and a clamp actuator. The drive member is configured to be moved in a repeating pattern. The motor is configured to move the drive member in the repeating pattern. The housing defines an interior space in which the motor is positioned and includes a first limiter. The foot includes (i) a base defining a work piece contact surface, and (ii) an extension structure attached to the base. The foot is configured to pivot in relation to the housing about a pivot axis between a rest position and a non-rest position. The spring is configured to bias the foot toward the rest position. The first clamp component includes a first clamping surface positioned in the interior space of the housing. The clamp actuator has a second limiter and a second clamping surface.Type: GrantFiled: September 30, 2011Date of Patent: July 4, 2017Assignees: Robert Bosch Tool Corporation, Robert Bosch GmbHInventor: Jaime Moreno
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Patent number: 9527143Abstract: A saw and guide apparatus includes a saw assembly and a cutting guide. The saw assembly includes (i) a drive member configured to be moved in a repeating pattern, (ii) a motor configured to move the drive member in the repeating pattern, (iii) a housing defining an interior space in which the motor is positioned, (iv) a foot including a base defining a cutting member opening therein, the base further defining a lower base surface, (v) a cutting member secured to the drive member so that the cutting member extends through the cutting member opening, and (vi) a guard attached to the housing and defining a cutting wheel space in which the cutting wheel is at least partially positioned.Type: GrantFiled: September 30, 2011Date of Patent: December 27, 2016Assignees: Robert Bosch Tool Corporation, Robert Bosch GmbHInventor: Jaime Moreno
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Patent number: 9156182Abstract: A saw assembly includes a drive member, a motor, a housing, a foot, and a spring. The drive member is configured to be moved in a repeating pattern. The motor is configured to move said drive member in said repeating pattern. The housing defines an interior space in which said motor is positioned, and said housing includes a mount located in said interior space. The foot includes (i) a base defining a work piece contact surface, and (ii) an extension structure attached to said base and defining a spring arm contact surface. The spring includes (i) a spring arm positioned in contact with said spring arm contact surface, and (ii) a coiled portion supported by said mount. The housing is configured to pivot in relation to said foot about a pivot axis.Type: GrantFiled: September 30, 2011Date of Patent: October 13, 2015Assignee: Robert Bosch GmbHInventor: Jaime Moreno
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Patent number: 9156184Abstract: An alignment utensil includes two guide rails (100A, 100B), an alignment device (10) aligning the guide rails (100A, 100B), and connectors (110A, 110B, 120) fixing the aligned guide rails (100A, 100B) together. The alignment device (10) includes a body (12) having a lateral surface (31) extending across abutting ends of the guide rails (100A, 100B). Each of two clamping pads (70) mounted on the body (12) is moved to press against a first lateral wall (108A) of one of the guide rails (100A, 100B) to abut a second lateral wall (108B) of each guide rail (100A, 100B) against the first lateral surface (31), aligning the first lateral walls (108A) of the guide rails (100A, 100B) and aligning the second lateral walls (108B) of the guide rails (100A, 100B). A method of aligning the guide rails (100A, 100B) uses the alignment device (10) and the connectors (110A, 110B, 120).Type: GrantFiled: March 25, 2013Date of Patent: October 13, 2015Inventor: Thomas Stoffel
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Patent number: 9044869Abstract: An electric circular saw includes a housing, a switch trigger arranged on the housing, a switch controlling rod for limiting the travel range of the switch trigger, a base plate, a depth support arranged on the base plate and a connecting rod for limiting the travel range of the depth support. The electric circular saw further includes an movable control member having a driving portion for driving the first connecting rod and a limiting portion for limiting the switch controlling rod, and the moving distance from the driving portion to a contact surface between the driving portion and the first connecting rod is larger than or equal to the moving distance from the limiting portion to a contact surface between the limiting portion and the switch controlling rod.Type: GrantFiled: February 5, 2013Date of Patent: June 2, 2015Assignee: Chervon (HK) LimitedInventors: Li Xing, Yibao Zhang, Honggui Shuai, Xin Yang
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Publication number: 20150113814Abstract: A portable zero clearance circular saw including a motor flame portion with a transverse oriented drive shaft and arbor coupled to the drive shaft, a handle portion with, a hand grip coupled to the motor frame portion aft end, a planar blade deck on a first lateral side, a movable blade shield rotatably mounted coaxial with the drive shaft and having a sidewall with a edge face coplanar with the blade deck, a trigger proximate the hand grip to move the blade shield, and a blade couplable to the drive shaft against the arbor, such that the blade outer surface is flush with the blade deck and blade shield sidewall. The handle portion may be rotatably coupled to the motor frame portion, and may include two laterally disposed blade shield triggers operably coupled to the blade shield via a dual pulley system.Type: ApplicationFiled: August 18, 2011Publication date: April 30, 2015Inventor: Jacob Cuzdey
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Publication number: 20140360028Abstract: A circular saw includes a saw blade, a housing at least partially surrounding the saw blade, and a base assembly pivotably supporting the housing for adjusting a depth of cut of the saw blade. A scale is coupled to one of the housing and the base assembly for indicating the depth of cut. A marker is coupled to the other of the housing and the base assembly to provide a reference for the scale.Type: ApplicationFiled: June 5, 2014Publication date: December 11, 2014Inventors: Chris Boehme, Jeffrey S. Holly
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Publication number: 20140360027Abstract: A hand-held power-tool footplate apparatus for portable power tools includes at least one main body unit configured to be removably positioned on a power-tool housing of a portable power tool, at least one housing abutment configured to abut against the power-tool housing, and at least one clamping surface located on a side that faces away from the housing abutment of the main body unit. The main body unit has a multi-point position fixing unit which has at least two pivot locking stops that differ from each other and that are configured to pivot angle lock the main body unit.Type: ApplicationFiled: May 12, 2014Publication date: December 11, 2014Applicant: Robert Bosch GmbHInventor: Ferdinand Emch
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Patent number: 8726526Abstract: A portable cutting machine is provided with a cutting machine main body, a surface plate rotatably supported by the cutting machine main body, a saw blade supported by the cutting machine main body rotatably around a first axis, and a lower guard supported by the cutting machine main body rotatably around a second axis. The first axis is located on one side of the surface plate. A part of the saw blade passes through an opening portion formed to penetrate through the surface plate and is exposed to the other side of the surface plate. The part of the saw blade exposed to the other side is covered by the lower guard. The first axis is parallel to the second axis. The first axis is located closer to a side of the surface plate than the second axis.Type: GrantFiled: March 5, 2010Date of Patent: May 20, 2014Assignees: Max Co., Ltd., Ryobi Ltd.Inventors: Kazunobu Yoshimura, Tomofumi Ichiba, Takuma Nonaka, Atsuhito Okada
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Publication number: 20140053418Abstract: A machine tool system comprises at least one machine tool separating device, which has at least one cutting strand and at least one guide unit for guiding the cutting strand, which together form a self-contained system, and at least one portable machine tool, which comprises a machine tool housing and at least one coupling device for coupling the machine tool separating device. The portable machine tool comprises at least one pad unit to be placed on a workpiece, wherein the pad unit and the machine tool housing are mounted such that they can be moved relative to each other.Type: ApplicationFiled: March 2, 2012Publication date: February 27, 2014Applicant: Robert Bosch GmbHInventor: Rudolf Fuchs
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Patent number: 8656598Abstract: A handheld jigsaw, such as a compass saw (10), is disclosed that comprises a housing (12, 13) and a lifting rod (20) having a pendulum mechanism (38). The pendulum mechanism includes a pendulum lever (40) with which a pendulum stroke can be given during sawing to a saw blade (28) carried by the lifting rod (20). The lifting rod (20) is arranged such that it can rotate about its own axis (21) thereof and pivot transversely to the axis (21), and wherein the pendulum mechanism (38) can rotate about the axis (21).Type: GrantFiled: April 27, 2009Date of Patent: February 25, 2014Assignee: Robert Bosch GmbHInventors: Hans Kaiser, Marcel Casota, Joachim Platzer, Thilo Koeder, Ulli Hoffmann, Jan Koegel
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Patent number: 8640346Abstract: A power tool includes a handle including a support portion movably supportable on a housing portion and extending substantially about the circumference of the housing portion. The support portion may include a second end movable relative to a first end such that the support portion selectively applies a force to the housing portion. The tool may include a bevel angle detent mechanism in which one of the detent member and the recess is angularly adjustable relative to the associated one of the detent support and the recess support to adjust the predetermined bevel angle position. A bevel angle detent mechanism may include an engagement operating assembly operable between a detent engagement-enabled condition, in which the detent member is engageable in the recess, and a detent engagement-prevention condition, in which the detent member is prevented from engaging the recess. The tool may include a spindle lock assembly.Type: GrantFiled: October 19, 2011Date of Patent: February 4, 2014Assignee: Milwaukee Electric Tool CorporationInventors: Douglas W. Allen, Scott R. Fischer, Peter A. Banach, Steven L. Berg
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Patent number: 8578615Abstract: A jigsaw may include a housing, a control member, a shoe member and a keel. The housing contains a motor and include a handle. The control member is moveable relative to the housing between at least a first position that implements a curve-cutting mode and a second position that implements a straight-cutting mode. The shoe member is connected to the housing and includes a bottom surface facing away from the housing. The keel is operable in a deployed configuration in which the keel protrudes through the bottom surface of the shoe member and a stowed configuration in which the keel does not protrude through the bottom surface of the shoe member. Relative motion between the shoe and the keel allows the keel to be in the deployed configuration when the control member is in the second position and the stowed configuration when the control member is in the first position.Type: GrantFiled: September 12, 2011Date of Patent: November 12, 2013Assignee: Black & Decker Inc.Inventors: Ashok Samuel Baskar, Steven McClaskey, Frank A. DeSantis, Zhang Haitao
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Patent number: 8490289Abstract: A handle for a hand held engine powered tool may include at least one lever or button for controlling the tool. The handle is made of at least two handle sections joined together. The lever or button for controlling the tool is however only secured in one of the handle sections in order to reduce the required grade of precision between the handle sections without affecting the performance of the lever or button.Type: GrantFiled: October 23, 2003Date of Patent: July 23, 2013Assignee: Husqvarna ABInventors: Mattias Nystrom, Magnus Andersson, Stefan Kullberg, Par Martinsson, Peter Bjorkman
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Patent number: 8479401Abstract: A power tool in one embodiment includes a motor supported by a frame, a foot defining a first plane, a first guide fixedly positioned with respect to the foot and defining a first arc in a second plane, a second guide fixedly positioned with respect to the foot and defining a second arc in a third plane, wherein the second plane and the third plane are orthogonal to the first plane and the first arc and the second arc are offset when projected onto a reference plane parallel to the second plane and the third plane, a first pin fixedly positioned with respect to the motor and guided by the first guide; and a second pin fixedly positioned with respect to the motor and guided by the second guide.Type: GrantFiled: June 15, 2010Date of Patent: July 9, 2013Assignee: Robert Bosch GmbHInventor: Andrew Stuart Barkley
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Publication number: 20130145634Abstract: A portable zero clearance circular saw including a motor frame portion with a transverse oriented drive shaft and arbor coupled to the drive shaft, a handle portion with, a hand grip coupled to the motor frame portion aft end, a planar blade deck on a first lateral side, a movable blade shield rotatably mounted coaxial with the drive shaft and having a sidewall with a edge face coplanar with the blade deck, a trigger proximate the hand grip to move the blade shield, and a blade couplable to the drive shaft against the arbor, such that the blade outer surface is flush with the blade deck and blade shield sidewall. The handle portion may be rotatably coupled to the motor frame portion, and may include two laterally disposed blade shield triggers operably coupled to the blade shield via a dual pulley system.Type: ApplicationFiled: August 18, 2011Publication date: June 13, 2013Applicant: Rylander & Associates P.C.Inventor: Jacob Cuzdey
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Publication number: 20130145633Abstract: A power tool comprising: a housing; a cable outlet with a central axis; an motor; a flexible electrical supply cable; a cable sheath for protecting supply cable projected through the cable outlet and for directing unprotected supply cable away from the central axis wherein the sheath is rotatable to change direction of unprotected supply cable; and locking means for locking the sheath in one of a plurality of rotational orientations. The locking means comprises: a receiving member connected to one of the sheath or the cable outlet; an engaging member connected to the other of the sheath or the cable outlet; and a biasing means for biasing the engaging and receiving members into engagement to lock the sheath in a rotational orientation, wherein movement of the sheath against the biasing means disengages the engaging and receiving members and unlocks the sheath for rotation.Type: ApplicationFiled: December 13, 2012Publication date: June 13, 2013Applicant: BLACK & DECKER INC.Inventor: BLACK & DECKER INC.
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Patent number: 8438740Abstract: A circular saw includes a base plate, a saw blade assembly pivotably mounted to the base plate, and a bevel adjustment assembly operable to adjust the bevel angle of the saw blade assembly by rotation of an axle supported on the base plate. A release mechanism includes two torsion springs each having a coil portion wound around the axle, an anchor leg held in a substantially fixed position relative to the axle and a release leg arranged to move relative to the axle. A manually operable release element is configured to substantially simultaneously move the release leg of each of the torsion springs in a direction to unwind the coil portion of each spring from about the axle.Type: GrantFiled: April 7, 2010Date of Patent: May 14, 2013Assignee: Robert Bosch GmbHInventor: Ernest Fischer
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Publication number: 20130019483Abstract: A jigsaw includes a housing having a body portion and a handle portion. The body portion has a forward end and a rearward end. The jigsaw also includes a motor positioned within the body portion of the housing. The motor is located forward of the handle portion. The jigsaw further includes a drive mechanism positioned within the body portion of the housing. The drive mechanism is coupled to the motor for driving a saw blade in a reciprocating motion. The jigsaw also includes a shoe assembly coupled to the body portion of the housing between the forward end and the rearward end.Type: ApplicationFiled: March 30, 2012Publication date: January 24, 2013Inventors: Michael Naughton, Troy C. Thorson, Sean T. Kehoe, Steven G. Melnyk
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Publication number: 20120324742Abstract: A power tool and method of using the power tool is described. The power tool includes a support platform component including a handle and a base plate, and a power tool component includes a working element and means for engaging the support platform that allows for rotational or pivotal movement of the power tool relative to the support platform component. The power tool also includes an adjustment mechanism that allows the working element of the power tool to be adjusted to an angle relative to the base plate that is different from the angle of the handle relative to the base plate.Type: ApplicationFiled: June 27, 2011Publication date: December 27, 2012Inventor: Kai Bau-Madsen
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Publication number: 20120317823Abstract: A power saw tool including a housing, a motor, and a reciprocating shaft. A blade clamp assembly is mounted to the reciprocating shaft and adapted for gripping a saw blade. The blade clamp assembly includes a main body defining a channel for engaging the saw blade. A latch arm is pivotally attached to the main body and rotatable about a pivot axis. A locking catch extends from the latch arm and retains the saw blade within the channel. A latch release extends from the latch arm. An actuator is provided to selectively engage the latch release and permit removal of the saw blade from the blade clamp assembly. The power saw tool may include a speed limiter housed within the handle grip to delimit rearward travel of the trigger switch, thereby restricting the speed of the motor. The power saw tool may also include a rotatable shoe assembly.Type: ApplicationFiled: May 17, 2012Publication date: December 20, 2012Inventors: John S. Vantran, Steven B. McClaskey, Robert J. B. Hobden
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Patent number: 8286358Abstract: The portable cutting tool includes a housing that rotatably supports a cutting blade, a base to be connected with the housing and having an opening through which the cutting blade is protrudable, and a protrusion amount changing mechanism. The protrusion amount changing mechanism has a link part extending from the base, and a fixing part which is provided at the housing, comes to a fixed state with respect to the link part when moved in one direction in a direction orthogonal to a rotational shaft of the cutting blade, and comes to a moving state to be movable with respect to the link part when moved in an other direction in the direction orthogonal to the rotational shaft, whereby a protrusion amount of the cutting blade from the second side of the opening is changed as the fixing part is moved with respect to the link part.Type: GrantFiled: July 30, 2009Date of Patent: October 16, 2012Assignee: Hitachi Koki Co., Ltd.Inventor: Shinji Kuragano
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Patent number: 8276281Abstract: A circular saw includes a housing, an electrical motor mounted in the housing, a base plate disposed below the housing, a saw blade attached to the housing and driven by the electrical motor, and an alignment indication assembly coupled to the housing. The saw blade has a portion below the base plate and can be tilted with respect to the base plate in a transverse direction. The alignment indication assembly has an indication member with an indicating end. The indication member is movable relative to a rotation center of the saw blade when the saw blade is being tilted with respect to the base plate so that the indicating end is maintained in front of and in line with the saw blade all the time.Type: GrantFiled: September 28, 2006Date of Patent: October 2, 2012Assignee: Positec Power Tools (Suzhou) Co., Ltd.Inventor: Shisong Zhang
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Patent number: 8272133Abstract: A circular saw having a saw blade depth adjustment detent mechanism for facilitating rapid positioning of a saw blade at predetermined depth positions includes a housing enclosing a motor disposed therein that rotates a circular saw blade. The circular saw includes a foot which rides on a workpiece to guide the saw blade during cutting operations. The saw blade depth adjustment detent mechanism pivotally interconnects the foot to said housing such that the circular saw blade is adjustable to the foot through a number of saw blade depth settings within a range of saw blade depth of cuts relative to the foot. The saw blade depth adjustment detent mechanism includes a saw blade depth detent and a second member having a plurality of spaced saw blade depth recesses that are each matingly engageable with the saw blade depth detent to provide the range of saw blade depths.Type: GrantFiled: July 3, 2003Date of Patent: September 25, 2012Assignee: Robert Bosch GmbHInventor: Joseph Wascow
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Patent number: 8230605Abstract: Embodiments of a foot apparatus for use with a power reciprocating saw having a nose portion configured to receive the same, the apparatus comprising an elongated foot stem configured to be inserted into the nose portion of the saw a foot pad having a forward surface for contacting a work piece and having an opening through which a blade extends, a front housing having one end portion with a first pivot connection to the stem and an opposite end portion having a second pivot connection to the foot pad, a compliant element interposed between one of the foot pad and front housing and the stem configured to resist pivoting of the front housing relative to the stem and thereby isolate and dampen vibration and shock that is transmitted to the stem by reciprocating action of the plunger and by cutting of a work piece.Type: GrantFiled: September 15, 2009Date of Patent: July 31, 2012Assignee: Robert Bosch GmbHInventor: Stephen C. Oberheim
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Publication number: 20120174418Abstract: A jigsaw that includes a housing assembly, a shoe member and an indicator. The housing assembly has a housing, a motor and transmission assembly received in the housing, an output member reciprocatingly driven by the motor and transmission assembly, and a trigger coupled to the housing and configured to control operation of the motor and transmission assembly. The housing defines a window. The shoe member is pivotally coupled to the housing. The indicator is pivotally disposed in the housing. A portion of the indicator is visible through the window. Movement of the indicator is responsive to movement of the shoe member such that a rotational position of the indicator is indicative of a position of the shoe member relative to the housing assembly.Type: ApplicationFiled: March 23, 2012Publication date: July 12, 2012Inventor: Brent A. Kuehne
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Patent number: 8209872Abstract: The present invention is an attachable rolling plate assembly which can be attached as a single unit to a portable cutting tool to facilitate the safe rolling movement of the portable cutting tool on the workpiece. The invention comprises a frame assembly formed from a single piece of molded material such as fiber enriched plastic having a pair of oppositely disposed longitudinal sidewalls with stabilizer fins extending therefrom, and a flat base portion having a pair of parallel stabilizer tubes molded therein. The invention further includes an adjustable bevel gear assembly by which the angle of orientation of the cutting blade can be quickly changed. The invention also includes a cutting guide assembly to facilitate a straight cut, reduce torsional rotation of the saw blade and reduce kickback of the saw.Type: GrantFiled: April 30, 2010Date of Patent: July 3, 2012Assignee: Woodman Tools, LLCInventor: Mathias Am Ende
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Publication number: 20120030953Abstract: A power tool includes a handle including a support portion movably supportable on a housing portion and extending substantially about the circumference of the housing portion. The support portion may include a second end movable relative to a first end such that the support portion selectively applies a force to the housing portion. The tool may include a bevel angle detent mechanism in which one of the detent member and the recess is angularly adjustable relative to the associated one of the detent support and the recess support to adjust the predetermined bevel angle position. A bevel angle detent mechanism may include an engagement operating assembly operable between a detent engagement-enabled condition, in which the detent member is engageable in the recess, and a detent engagement-prevention condition, in which the detent member is prevented from engaging the recess. The tool may include a spindle lock assembly.Type: ApplicationFiled: October 19, 2011Publication date: February 9, 2012Inventors: Douglas W. Allen, Scott R. Fischer, Peter A. Banach, Steven L. Berg
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Publication number: 20110302794Abstract: A power tool in one embodiment includes a motor supported by a frame, a foot defining a first plane, a first guide fixedly positioned with respect to the foot and defining a first arc in a second plane, a second guide fixedly positioned with respect to the foot and defining a second arc in a third plane, wherein the second plane and the third plane are orthogonal to the first plane and the first arc and the second arc are offset when projected onto a reference plane parallel to the second plane and the third plane, a first pin fixedly positioned with respect to the motor and guided by the first guide; and a second pin fixedly positioned with respect to the motor and guided by the second guide.Type: ApplicationFiled: June 15, 2010Publication date: December 15, 2011Applicants: ROBERT BOSCH TOOL CORPORATIONInventor: Andrew Stuart Barkley
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Publication number: 20110252652Abstract: A circular saw includes a base plate defining a base plane, a bevel bracket which supports a circular saw blade and is pivotally mounted on the base plate for tilting the blade, the bevel bracket having a pivoting axis which is parallel to the base plane and the blade and perpendicular to a rotational axis of the blade, and the blade partly extending through an opening forming in the base plate, and an anti-splinter device for preventing cutting chips from splintering. The anti-splinter device comprises a pair of slides mounted in the opening and forming a gap between their opposing ends, an outcoming section of the blade passing through the gap, and slide driving means associated with the bevel bracket and driving the slides to move in conformity with the tilting of the blade to allow the gap to accommodate the positional change of the outcoming section of the blade.Type: ApplicationFiled: December 17, 2008Publication date: October 20, 2011Applicants: Robert Bosch GmbH, Bosch Power Tools (China) Co., Ltd.Inventors: Bo Zhen, Aigui Wang
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Patent number: 8037614Abstract: A technique is provided which is effective in preventing chips generated during cutting operation on a workpiece from being accumulated in a region ahead in a cutting direction. A representative cutting machine includes a motor, a blade, a body housing having a first region that houses the motor and a second region that covers the blade and projects forward of a front surface of the first region, a base, an angular plate, an outlet formed in the body housing, an opening and a blocking part. The blocking part prevents the air discharged from the outlet from flowing out laterally with respect to the moving direction of the base through a clearance between a front end of the second region and the one end of the angular plate and thereby helps the air discharged from the outlet flow into the opening.Type: GrantFiled: March 5, 2009Date of Patent: October 18, 2011Assignee: Makita CorporationInventors: Kai Yang, Kenji Abe
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Publication number: 20110247222Abstract: A circular saw includes a base plate, a saw blade assembly pivotably mounted to the base plate, and a bevel adjustment assembly operable to adjust the bevel angle of the saw blade assembly by rotation of an axle supported on the base plate. A release mechanism includes two torsion springs each having a coil portion wound around the axle, an anchor leg held in a substantially fixed position relative to the axle and a release leg arranged to move relative to the axle. A manually operable release element is configured to substantially simultaneously move the release leg of each of the torsion springs in a direction to unwind the coil portion of each spring from about the axle.Type: ApplicationFiled: April 7, 2010Publication date: October 13, 2011Applicants: ROBERT BOSCH TOOL CORPORATIONInventor: Ernest Fischer
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Publication number: 20110173819Abstract: The invention relates to an operating method for a power tool (1), whereby it is monitored whether the working tool (7) has reached a predetermined position of application relative to a workpiece and whether it has maintained said position of application over a minimum period (t) and the tool (1) is only released for the working operation once the minimum period has expired.Type: ApplicationFiled: March 17, 2009Publication date: July 21, 2011Inventors: Thilo Koeder, Joachim Platzer, Ulli Hoffmann