To Vary Angle Between Saw And Guide Plate Patents (Class 30/376)
  • Patent number: 11007586
    Abstract: 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: Grant
    Filed: November 22, 2017
    Date of Patent: May 18, 2021
    Assignee: Koki Holdings Co., Ltd.
    Inventor: Shinji Kuragano
  • Patent number: 10821529
    Abstract: 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: Grant
    Filed: March 4, 2016
    Date of Patent: November 3, 2020
    Assignees: Robert Bosch Tool Corporation, Robert Bosch GmbH
    Inventor: Robert S. Doumani
  • Patent number: 10668644
    Abstract: 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: Grant
    Filed: August 15, 2017
    Date of Patent: June 2, 2020
    Assignee: MAKITA CORPORATION
    Inventors: Katsumi Okouchi, Yohei Ogino
  • Patent number: 10611047
    Abstract: 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: Grant
    Filed: October 24, 2016
    Date of Patent: April 7, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Thorsten Kuehn, Thomas Ziegler, Michael Wall, Joerg Maute
  • Patent number: 10471624
    Abstract: 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: Grant
    Filed: February 11, 2015
    Date of Patent: November 12, 2019
    Assignee: Hilti Aktiengesellschaft
    Inventor: Konstantin Baxivanelis
  • Patent number: 10189174
    Abstract: 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: Grant
    Filed: January 13, 2015
    Date of Patent: January 29, 2019
    Assignee: POSITEC POWER TOOLS (SUZHOU) CO., LTD.
    Inventors: Warren Brown, Harry Szommer, Graham Gerhardt
  • Patent number: 10173345
    Abstract: 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: Grant
    Filed: June 8, 2016
    Date of Patent: January 8, 2019
    Assignee: MAKITA CORPORATION
    Inventors: Fumitoshi Numata, Akihiro Goto
  • Patent number: 9694508
    Abstract: 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: Grant
    Filed: September 30, 2011
    Date of Patent: July 4, 2017
    Assignees: Robert Bosch Tool Corporation, Robert Bosch GmbH
    Inventor: Jaime Moreno
  • Patent number: 9527143
    Abstract: 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: Grant
    Filed: September 30, 2011
    Date of Patent: December 27, 2016
    Assignees: Robert Bosch Tool Corporation, Robert Bosch GmbH
    Inventor: Jaime Moreno
  • Patent number: 9156184
    Abstract: 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: Grant
    Filed: March 25, 2013
    Date of Patent: October 13, 2015
    Inventor: Thomas Stoffel
  • Patent number: 9156182
    Abstract: 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: Grant
    Filed: September 30, 2011
    Date of Patent: October 13, 2015
    Assignee: Robert Bosch GmbH
    Inventor: Jaime Moreno
  • Patent number: 9044869
    Abstract: 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: Grant
    Filed: February 5, 2013
    Date of Patent: June 2, 2015
    Assignee: Chervon (HK) Limited
    Inventors: Li Xing, Yibao Zhang, Honggui Shuai, Xin Yang
  • Publication number: 20150113814
    Abstract: 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: Application
    Filed: August 18, 2011
    Publication date: April 30, 2015
    Inventor: Jacob Cuzdey
  • Publication number: 20140360028
    Abstract: 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: Application
    Filed: June 5, 2014
    Publication date: December 11, 2014
    Inventors: Chris Boehme, Jeffrey S. Holly
  • Publication number: 20140360027
    Abstract: 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: Application
    Filed: May 12, 2014
    Publication date: December 11, 2014
    Applicant: Robert Bosch GmbH
    Inventor: Ferdinand Emch
  • Patent number: 8726526
    Abstract: 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: Grant
    Filed: March 5, 2010
    Date of Patent: May 20, 2014
    Assignees: Max Co., Ltd., Ryobi Ltd.
    Inventors: Kazunobu Yoshimura, Tomofumi Ichiba, Takuma Nonaka, Atsuhito Okada
  • Publication number: 20140053418
    Abstract: 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: Application
    Filed: March 2, 2012
    Publication date: February 27, 2014
    Applicant: Robert Bosch GmbH
    Inventor: Rudolf Fuchs
  • Patent number: 8656598
    Abstract: 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: Grant
    Filed: April 27, 2009
    Date of Patent: February 25, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Hans Kaiser, Marcel Casota, Joachim Platzer, Thilo Koeder, Ulli Hoffmann, Jan Koegel
  • Patent number: 8640346
    Abstract: 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: Grant
    Filed: October 19, 2011
    Date of Patent: February 4, 2014
    Assignee: Milwaukee Electric Tool Corporation
    Inventors: Douglas W. Allen, Scott R. Fischer, Peter A. Banach, Steven L. Berg
  • Patent number: 8578615
    Abstract: 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: Grant
    Filed: September 12, 2011
    Date of Patent: November 12, 2013
    Assignee: Black & Decker Inc.
    Inventors: Ashok Samuel Baskar, Steven McClaskey, Frank A. DeSantis, Zhang Haitao
  • Patent number: 8490289
    Abstract: 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: Grant
    Filed: October 23, 2003
    Date of Patent: July 23, 2013
    Assignee: Husqvarna AB
    Inventors: Mattias Nystrom, Magnus Andersson, Stefan Kullberg, Par Martinsson, Peter Bjorkman
  • Patent number: 8479401
    Abstract: 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: Grant
    Filed: June 15, 2010
    Date of Patent: July 9, 2013
    Assignee: Robert Bosch GmbH
    Inventor: Andrew Stuart Barkley
  • Publication number: 20130145634
    Abstract: 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: Application
    Filed: August 18, 2011
    Publication date: June 13, 2013
    Applicant: Rylander & Associates P.C.
    Inventor: Jacob Cuzdey
  • Publication number: 20130145633
    Abstract: 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: Application
    Filed: December 13, 2012
    Publication date: June 13, 2013
    Applicant: BLACK & DECKER INC.
    Inventor: BLACK & DECKER INC.
  • Patent number: 8438740
    Abstract: 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: Grant
    Filed: April 7, 2010
    Date of Patent: May 14, 2013
    Assignee: Robert Bosch GmbH
    Inventor: Ernest Fischer
  • Publication number: 20130019483
    Abstract: 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: Application
    Filed: March 30, 2012
    Publication date: January 24, 2013
    Inventors: Michael Naughton, Troy C. Thorson, Sean T. Kehoe, Steven G. Melnyk
  • Publication number: 20120324742
    Abstract: 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: Application
    Filed: June 27, 2011
    Publication date: December 27, 2012
    Inventor: Kai Bau-Madsen
  • Publication number: 20120317823
    Abstract: 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: Application
    Filed: May 17, 2012
    Publication date: December 20, 2012
    Inventors: John S. Vantran, Steven B. McClaskey, Robert J. B. Hobden
  • Patent number: 8286358
    Abstract: 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: Grant
    Filed: July 30, 2009
    Date of Patent: October 16, 2012
    Assignee: Hitachi Koki Co., Ltd.
    Inventor: Shinji Kuragano
  • Patent number: 8276281
    Abstract: 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: Grant
    Filed: September 28, 2006
    Date of Patent: October 2, 2012
    Assignee: Positec Power Tools (Suzhou) Co., Ltd.
    Inventor: Shisong Zhang
  • Patent number: 8272133
    Abstract: 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: Grant
    Filed: July 3, 2003
    Date of Patent: September 25, 2012
    Assignee: Robert Bosch GmbH
    Inventor: Joseph Wascow
  • Patent number: 8230605
    Abstract: 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: Grant
    Filed: September 15, 2009
    Date of Patent: July 31, 2012
    Assignee: Robert Bosch GmbH
    Inventor: Stephen C. Oberheim
  • Publication number: 20120174418
    Abstract: 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: Application
    Filed: March 23, 2012
    Publication date: July 12, 2012
    Inventor: Brent A. Kuehne
  • Patent number: 8209872
    Abstract: 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: Grant
    Filed: April 30, 2010
    Date of Patent: July 3, 2012
    Assignee: Woodman Tools, LLC
    Inventor: Mathias Am Ende
  • Publication number: 20120030953
    Abstract: 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: Application
    Filed: October 19, 2011
    Publication date: February 9, 2012
    Inventors: Douglas W. Allen, Scott R. Fischer, Peter A. Banach, Steven L. Berg
  • Publication number: 20110302794
    Abstract: 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: Application
    Filed: June 15, 2010
    Publication date: December 15, 2011
    Applicants: ROBERT BOSCH TOOL CORPORATION
    Inventor: Andrew Stuart Barkley
  • Publication number: 20110252652
    Abstract: 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: Application
    Filed: December 17, 2008
    Publication date: October 20, 2011
    Applicants: Robert Bosch GmbH, Bosch Power Tools (China) Co., Ltd.
    Inventors: Bo Zhen, Aigui Wang
  • Patent number: 8037614
    Abstract: 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: Grant
    Filed: March 5, 2009
    Date of Patent: October 18, 2011
    Assignee: Makita Corporation
    Inventors: Kai Yang, Kenji Abe
  • Publication number: 20110247222
    Abstract: 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: Application
    Filed: April 7, 2010
    Publication date: October 13, 2011
    Applicants: ROBERT BOSCH TOOL CORPORATION
    Inventor: Ernest Fischer
  • Publication number: 20110173819
    Abstract: 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: Application
    Filed: March 17, 2009
    Publication date: July 21, 2011
    Inventors: Thilo Koeder, Joachim Platzer, Ulli Hoffmann
  • Patent number: 7958641
    Abstract: 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: Grant
    Filed: May 9, 2007
    Date of Patent: June 14, 2011
    Assignee: Woodman Tools, LLC
    Inventor: Mathias Am Ende
  • Publication number: 20110131820
    Abstract: The invention relates to a hand-held jigsaw, especially a compass saw, having a housing and a lifting rod with a pendulum mechanism, especially a pendulum lever, with which a pendulum stroke can be given during sawing to a saw blade carried by the lifting rod, especially a jigsaw blade. According to the invention, the hand-held jigsaw can be used more safely and in more special applications as the lifting rod is arranged such that it can rotate about the axis thereof and pivot transversely to the axis, and the pendulum mechanism can rotate about the axis.
    Type: Application
    Filed: April 27, 2009
    Publication date: June 9, 2011
    Inventors: Hans Kaiser, Marcel Casota, Joachim Platzer, Thilo Koeder, Ulli Hoffmann, Jan Koegel
  • Publication number: 20110119933
    Abstract: The invention relates to a power tool (1), which is designed as a jigsaw (2) and which comprises a rear support (2) for the saw blade (8) at a right angle to the rotational axis (22) of the saw blade (8). Said driven support (20) allows adjustment of the saw blade (8) in different angular positions in the rotational direction around its rotational axis (22).
    Type: Application
    Filed: March 16, 2009
    Publication date: May 26, 2011
    Applicant: Robert Bosch GMBH
    Inventors: Hans Kaiser, Thilo Koeder, Joachim Platzer, Ulli Hoffmann, Jan Koegel
  • Patent number: 7918030
    Abstract: Cutting tools (1) may include a lighting device (5). The lighting device may be mounted on a tool unit (3) adjacent to a grip portion (26). Preferably, the grip portion serves to protect the lighting device from being damaged by an external force. The tool unit may include a motor case (21) for accommodating a motor. The grip portion may extend from the motor case and the lighting device may be mounted on or within the motor case. The tool unit may further include a blade case (20) that at least partly covers a cutting blade (22). The blade case may be joined to the motor case via a joining portion J defined on the motor case. In this case, the lighting device is preferably disposed proximal to the joining portion. The lighting device may include at least a first light (5a) and a second light (5b) that are arranged and constructed to illuminate different areas.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: April 5, 2011
    Assignee: Makita Corporation
    Inventor: Toru Fukuoka
  • Publication number: 20110056084
    Abstract: An electric cutting tool includes: a surface plate; a body portion tiltably provided on the surface plate; and a circular saw blade capable of rotating by means of driving power from a driver. A movement amount measuring section measures a movement amount of the body portion with respect to the surface plate in response to a tilting action. A calculating section calculates a cutting depth of the circular saw blade or an inclination angle of the body portion on the basis of the movement amount measured by the movement amount measuring section. A display section displays the cutting depth or the inclination angle of the body portion calculated by the calculating section. The movement amount measuring section includes: a scale section installed on any one of the surface plate and the body portion; and a scale detecting section installed on the other.
    Type: Application
    Filed: September 2, 2010
    Publication date: March 10, 2011
    Applicant: RYOBI LTD.
    Inventors: Atsuhito Okada, Akihiro Mikano
  • Publication number: 20110010951
    Abstract: A pivotable shoe assembly, for use on a reciprocating saw having a housing and a saw blade, includes a shoe support coupled to the housing and having a longitudinal axis. The shoe support includes a base member extending at least partially along the longitudinal axis to define a first plane. The shoe assembly further including a shoe pivotably coupled to the shoe support. The shoe includes a contact surface defining a second plane and a blade recess defined by the contact surface to allow the saw blade to pass therethrough. The shoe further includes plurality of locking positions, each locking position corresponding to an engagement angle, where the engagement angle is defined as the angle between the first plane and the second plane.
    Type: Application
    Filed: July 15, 2009
    Publication date: January 20, 2011
    Inventors: Ryan Harrison, Daniel J. Bowen, Robert E. McCracken
  • Patent number: 7866051
    Abstract: A portable cutting tool includes a saw blade for cutting a workpiece, a cutting tool main body having a motor for driving to rotate the saw blade, and a base for guiding the cutting tool main body along a surface of the workpiece. A cut depth of the saw blade projected from a lower face of the base is made to be able to be adjusted by pivoting the cutting tool main body centering on a support shaft connected to the base. The portable cutting tool is provided with a mechanism for fixing the cut depth at a preset position when the cut depth of the saw blade is gradually increased from a minimum cut depth.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: January 11, 2011
    Assignee: Hitachi Koki Co., Ltd.
    Inventor: Kenji Niwa
  • Publication number: 20100307012
    Abstract: Saw equipment which is applicable to saws which incorporate a jig saw blade or disk, enabling to carry out cuts with variation in the inclination of the cuts by placing the saw or disk with those inclinations with respect to a support base which forms part of the saw set. It is characterized in that it incorporates a characteristic first device for precisely and securely setting the saw or disk at the appropriate inclination. It also includes a second device for also precisely controlling the direction of the cuts.
    Type: Application
    Filed: October 9, 2008
    Publication date: December 9, 2010
    Applicant: CANAS Y GOMEZ, S.L.
    Inventor: José Canas Fontan
  • Publication number: 20100299943
    Abstract: A circular saw has a housing, a direct current motor, a battery assembly, a handle having first and second ends, a circular saw blade and a base plate. The motor is located outside of an area defined by the radius of the circular blade and between the first and second ends of the handle and the blade is laterally aligned with the handle. The circular saw also has a center of gravity which lies close to the plane defined by the saw blade, is below the handle and is within the length of the base plate. As a result of this arrangement, the circular saw of the present invention reduces the influence of the torque created during a cutting operation and improves the balance and operation of the circular saw.
    Type: Application
    Filed: May 25, 2010
    Publication date: December 2, 2010
    Inventor: Masatoshi Fukinuki
  • Patent number: 7661194
    Abstract: 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 front wheel housing portion, a back wheel housing portion, and two or three metal rods which interconnect the two housings. The housings removably retain a pair of spaced apart wheels and means to retain a cutting tool on the housings so that the cutting tool can be rolled on the workpiece during operation of the tool while the cutting blade portion of the tool extends between a pair of adjacent interconnecting rod members. The front and rear wheel housing assembly receives the cutting blade in between its pins or axles, so that the entire width of the saw plate is supported by the wheels during cutting.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: February 16, 2010
    Assignee: K & E Enterprises, Inc.
    Inventor: Mathias Am Ende