Tool Is Single Element Reciprocable Along Elongate Cutting Edge (e.g., Saw Blade, Etc.) Patents (Class 83/699.21)
-
Patent number: 11370140Abstract: An apparatus for working a sheet material has a supporting frame, a supporting head connected to the supporting frame, a plurality of tools supported on a working device, a waterjet cutter, first and second male fast-couplers, and first and second female fast-couplers disposed on the supporting head. The first male fast-coupler is disposed on the working device. The second male fast-coupler is disposed on the waterjet cutter. The first and second female couplers are configured to alternately couple the first and second male fast-couplers.Type: GrantFiled: September 3, 2019Date of Patent: June 28, 2022Inventor: Tommaso Caroselli
-
Publication number: 20140360335Abstract: A saw blade clamping device for a linearly reciprocating type sawing machine is able to clamp at least two types of saw blades, comprising a clamping seat having a connecting portion and a loading portion with a loading slot; an operating member comprising an operating portion and assembling and loading ends formed on opposite ends of the operating portion respectively, the operating portion being assembled around the loading portion by the help of the assembling end, and the loading end being provided with a loading port; and an abutting element disposed between the operating member and the clamping seat and having an abutting end which can extend into the loading slot, wherein the operating member is able to be rotated with respect to the loading portion, an inner wall of the operating member is provided with a driving surface formed in the form of a curved surface, the abutting element is provided with a driving end which abuts against the driving surface, and the abutting end of the abutting element is drType: ApplicationFiled: January 15, 2013Publication date: December 11, 2014Applicant: Bosch Power Tools (China) Co., Ltd.Inventor: Yanchao Wang
-
Patent number: 8826549Abstract: A reciprocating saw having a clamping arrangement with a clamp support base, first and second locking members and a release lever. The clamp support base defines first and second blade slots that are each configured to receive a saw blade therein. Each of the first and second locking members are movable between a disengaged position, which does not inhibit withdrawal of the saw blade from the a corresponding one of the first and second blade slots, and an engaged position that inhibits withdrawal of the saw blade from the corresponding one of the first and second blade slots. The release lever is pivotally coupled to the clamp support base and coordinates movement of the first and second locking members.Type: GrantFiled: October 8, 2013Date of Patent: September 9, 2014Assignee: Black & Decker Inc.Inventor: Gabriel da Graca
-
Patent number: 8621967Abstract: A reciprocating saw including a housing and a reciprocating shaft supported within the housing. The reciprocating shaft has a longitudinal axis and a first end and a second end opposite the first end. A cutting blade is provided at the first end of the reciprocating shaft. A drive mechanism provided at a second end of the reciprocating shaft is configured to drive the reciprocating shaft in a substantially reciprocating motion relative to the housing while at the same time allowing the reciprocating shaft to substantially rotate about the longitudinal axis of the reciprocating shaft independent of the housing.Type: GrantFiled: June 26, 2012Date of Patent: January 7, 2014Assignee: Credo Technology CorporationInventor: Robert Doumani
-
Patent number: 8555516Abstract: A saw blade clamping arrangement for a power can include a clamp support base that is operatively coupled for movement with a drive shaft and has a first and a second, saw blade slots. First and second locking members can be operatively associated with the clamp support base and be movable between a locked position that selectively locks the blade in one of the corresponding first and second slots, and an unlocked position that releases the blade. A release member can rotate to cause the first cam surface to urge the first locking member at least partially into the first slot and the second cam surface to concurrently urge the second locking member at least partially into the second slot. In another configuration, the release member can alternatively urge the first or second locking member into the respective slots.Type: GrantFiled: March 25, 2010Date of Patent: October 15, 2013Assignee: Black & Decker Inc.Inventor: Gabriel Da Graca
-
Patent number: 8327550Abstract: A jigsaw drive shaft is connected to a blade by the blade clamp of the present invention. The blade clamp comprises a clamp body mounted securely to the drive shaft by a bracket. The clamp body has a hollow portion formed to receive an upper portion the jigsaw blade. The clamp body also includes a hollow tubular extension. A cam body is pivotable about an axis through a cylindrical bore such that cam surfaces move in and out of contact with an interior surface of the clamp body to engage or release the blade. A spring biases the cam body into engagement with the clamp body surface. The user must press on a protrusion of the cam body to pivot the cam surfaces way from the clamp surface and against the force of the spring.Type: GrantFiled: January 28, 2011Date of Patent: December 11, 2012Assignee: Black & Decker Inc.Inventor: Mike Wilson
-
Patent number: 8230607Abstract: A reciprocating tool that includes a spindle that reciprocates with respect to a housing within a cavity of the housing. The reciprocating tool includes a blade clamp mechanism actuator coupled to the housing for movement with respect the housing between first and second positions. The spindle reciprocates with respect to the blade clamp mechanism actuator. A blade clamp mechanism is coupled to the spindle for reciprocating movement therewith, and the blade clamp mechanism is configured to attach the saw blade to the spindle. The blade clamp mechanism includes a collar mounted on the end of the spindle, and the collar is rotatable about the longitudinal axis of the spindle between an engaged position and a disengaged position in response to movement of the blade clamp mechanism actuator between the first position and the second position.Type: GrantFiled: May 8, 2009Date of Patent: July 31, 2012Assignee: Milwaukee Electric Tool CorporationInventors: Kurt Limberg, Roger D. Neitzell, Michael S. Steele
-
Patent number: 8205342Abstract: A reciprocating saw including a first end, a working end opposite the first end, and a housing extending between the first end and the working end. A reciprocating shaft is supported within the housing and has a longitudinal axis. A locking mechanism is supported at the housing and is selectively moveable between a first position and a second position. When the locking mechanism is in the first position the reciprocating shaft is configured to substantially reciprocate relative to the housing but remain substantially rotationally fixed relative to the longitudinal axis of the reciprocating shaft. When the locking mechanism is in the second position, the reciprocating shaft is configured to substantially reciprocate relative to the housing and at the same time substantially rotate about the longitudinal axis of the reciprocating shaft independent of the housing.Type: GrantFiled: December 23, 2008Date of Patent: June 26, 2012Assignee: Credo Technology CorporationInventor: Robert Doumani
-
Patent number: 8117757Abstract: A cutter adapter includes a holder having a receiving portion for inserting a cutter therein; a sleeve sleeved onto the holder and having an annular bevel; a lock pin inserted into the holder and having an active end and a passive end, the passive end being squeezed by the annular bevel when the sleeve is moved, the active end being inserted into the cutter when the passive end is squeezed; and a biasing pin located in the receiving portion and pushed by a spring mounted in the receiving portion. In this way, when intending to mount the cutter to the cutter adapter, the user only needs to insert the cutter into the receiving portion to force the biasing pin to disengage from the lock pin, the lock pin being forced by the annular bevel to insert the active end into the receiving portion to hold the cutter.Type: GrantFiled: April 10, 2009Date of Patent: February 21, 2012Assignee: Mobiletron Electronics Co., Ltd.Inventor: Tung-Chin Kuo
-
Patent number: 8112895Abstract: A reciprocating saw has a locking element (9) for axially fixing the saw blade (5) in a fastening device, wherein a release device (10) is provided, with which the locking element can be displaced into its release position against the spring force of an adjusting spring. A component (12), acting upon the locking element, of the release device is arranged, with respect to the plane of the saw blade, on the same side as the locking element.Type: GrantFiled: April 5, 2007Date of Patent: February 14, 2012Assignee: Robert Bosch GmbHInventor: Janos Rakaczki
-
Patent number: 8099873Abstract: An electric-powered cutting machine includes a reciprocable plunger held by and protruding outward from a housing; an operation member capable of being pivoted on the housing; and a blade holding mechanism disposed at a tip end portion of the plunger, the blade holding mechanism causing a blade to be detachably attached to the plunger. The operation member includes an operation portion and an abutting portion, wherein a distance from the operation portion to a rotating fulcrum is longer than a distance from the abutting portion to the rotating fulcrum. The blade holding mechanism is biased and is capable of swinging, and the blade holding mechanism includes a rotating member capable of being pressed against a side of the blade, wherein the abutting portion abuts against the rotating member when the operating member swings, and wherein the blade is detachably attached to the plunger by swinging of the rotating member.Type: GrantFiled: April 23, 2007Date of Patent: January 24, 2012Assignee: Hitachi Koki Co., Ltd.Inventors: Naoya Eto, Shinichi Sakuma
-
Patent number: 8082671Abstract: A hand-held power jigsaw includes a clamping device which has an insertion slot (26) for a shaft (153) of the tool and has a transverse aperture (27) extending transversely to the insertion slot (26) and opening out into it. A clamping element (19) for clamping the shaft (153) can slide in the transverse aperture (27) and travels into the insertion slot (26) at one end and protrudes out from the transverse aperture (27) at the other end. A centering piece (18) has a rotatable clamping sleeve (20) equipped with a clamping curve (28) that slides the clamping element (19), equipped with a clamping spring, which engages the clamping sleeve (20) and rotates the clamping sleeve (20). The centering piece (18) has two transverse apertures (27) and in which two clamping elements (19) are supported opposite each other in a movable fashion.Type: GrantFiled: April 7, 2008Date of Patent: December 27, 2011Assignee: Robert Bosch GmbHInventor: Daniel Saegesser
-
Patent number: 8046926Abstract: A saw blade clamping arrangement for a power tool including a housing, a drive shaft mounted for reciprocating motion relative to the housing and having a longitudinal drive axis, and a saw blade releasably interconnected with the drive shaft. The saw blade clamping arrangement includes a blade support mechanism with first and second slots crosswise intersecting slots configured to selectively receive the saw blade in first and second orientations. The clamping arrangement also includes a tubular actuator rotatable about the longitudinal drive axis between an engaged position and a disengaged position, the actuator including a locking cam surface, and a locking member operatively associated with the actuator, and movable between a locked position that selectively locks the blade in one of the first and second orientations and an unlocked position that releases the blade, the locking member including a follower surface driven by the locking cam surface.Type: GrantFiled: December 6, 2007Date of Patent: November 1, 2011Assignee: Black & Decker Inc.Inventors: Jonathan D. Bigden, Joseph D. Anderson, Brian P. Wattenbach, Michael O'Banion
-
Publication number: 20110232107Abstract: A saw blade clamping arrangement for a power can include a clamp support base that is operatively coupled for movement with a drive shaft and has a first and a second, saw blade slots. First and second locking members can be operatively associated with the clamp support base and be movable between a locked position that selectively locks the blade in one of the corresponding first and second slots, and an unlocked position that releases the blade. A release member can rotate to cause the first cam surface to urge the first locking member at least partially into the first slot and the second cam surface to concurrently urge the second locking member at least partially into the second slot. In another configuration, the release member can alternatively urge the first or second locking member into the respective slots.Type: ApplicationFiled: March 25, 2010Publication date: September 29, 2011Inventor: Gabriel da Graca
-
Patent number: 7958808Abstract: A vibration-reducing device is applied to a scroll saw. The scroll saw includes a body, a U-frame, a block and an actuating device. The U-frame is coupled to the body, and the block and a shaft of the actuating device are eccentrically fastened to each other, and the actuating device is mounted to the body. The vibration-reducing device includes a connector and a pivot arm pivotally coupled to the body. The connector includes a third end rotatably connected to the block, and a fourth end rotatably connected to the pivot arm. When the shaft is rotated, the motion of the center of gravity of the pivot arm in a vertical direction is opposite to the motion of the center of gravity of the U-frame.Type: GrantFiled: June 26, 2008Date of Patent: June 14, 2011Assignee: Rexon Industrial Corp., Ltd.Inventor: Jung-Huo Chen
-
Patent number: 7871080Abstract: Several preferred embodiments are disclosed for a tool-less blade clamping apparatus for a reciprocating tool of the type which has a reciprocating plunger which has a tool attachment receiving slot for receiving a tool attachment of the type that has a shank portion. The clamping apparatus has an unclamped position and a clamped position. In the unclamped position, a tool attachment can be easily inserted and when it is in its clamped position, the tool attachment is securely retained. The preferred embodiments have at least one spring biasing the apparatus toward the clamped position, a releasable retaining mechanism for holding the apparatus in its unclamped position after being placed in that position. When the blade shank portion is inserted into the slot a predetermined distance, the shoulders of the shank portion release the retaining mechanism to move it to its clamped position.Type: GrantFiled: January 16, 2004Date of Patent: January 18, 2011Assignee: Robert Bosch GmbHInventors: Marc Vincent Marini, Vance E. Roe, Matthew Carr, Gary Sinclair, Gavin Wright
-
Publication number: 20100229407Abstract: A reciprocating saw has a locking element (9) for axially fixing the saw blade (5) in a fastening device, wherein a release device (10) is provided, with which the locking element can be displaced into its release position against the spring force of an adjusting spring. A component (12), acting upon the locking element, of the release device is arranged, with respect to the plane of the saw blade, on the same side as the locking element.Type: ApplicationFiled: April 5, 2007Publication date: September 16, 2010Applicant: ROBERT BOSCH GMBHInventor: Janos Rakaczki
-
Patent number: 7784388Abstract: A blade clamping device comprises a main body which includes two opposited sidewalls and a base plate connected therebetween for defining a cavity for receiving a blade therein. A fixing device mounted between the two sidewalls. A pivot lever is pivotly mounted on the main body about an axis for driving the fixing device to fix or release the blade. A spring is biased between the main body and the pivot lever, which can hold the pivot lever in a predetermined position at which the fixing device clamps the blade tightly. The blade clamping device of the present invention can be kept in the position where the blade is released such that the blade can be easily detached or inserted as required. Furthermore, the operation becomes convenient and easy because of the short moving distance of the operation handle when an operator turns round the pivot lever to fix or release blade.Type: GrantFiled: May 17, 2007Date of Patent: August 31, 2010Assignee: Chervon LimitedInventor: Yasheng Chen
-
Patent number: 7774944Abstract: An adaptor for attaching new, worn or broken blades to reciprocating saws. The adaptor has a slot wide enough to accommodate the working portion of the blade and includes a clamping member to clamp the blade in the slot. Since the blades are slightly flexible, the slot has a height slightly greater than the thickness of the blade, and the clamping member, such as a threaded member with a rounded end, will clamp and hold the blade by forcing it downwardly into a recess while forcing the edges of the blade upwardly into the upper shoulders of the slot. The adapter is provided with a tongue that allows the adapter to fit most, if not all, presently available saws.Type: GrantFiled: December 23, 2005Date of Patent: August 17, 2010Inventor: Donald Wagenbach
-
Patent number: 7721450Abstract: The present invention provides a blade clamp for an electrically powered reciprocating saw. The clamp is arranged to eliminate, or at least reduce, misalignment of a blade during use with the cut direction and the longitudinal axis of a jigsaw. Thus, so-called “crabbing” of the jigsaw can be reduced, thereby increasing the accuracy with which an operator can use the jigsaw. This is achieved by modifying the blade retaining pin such that it comprises a radial protrusion which engages with or locates in a cooperating groove disposed on the clamp body. Arranging the groove and protrusion to have an engagement surface (as opposed to a point of contact) further improves on lateral stability of the pin with respect to a reciprocating shaft of the saw.Type: GrantFiled: September 27, 2006Date of Patent: May 25, 2010Assignee: Black & Decker Inc.Inventor: Graham Bone
-
Publication number: 20100058914Abstract: A knife connector includes a base, a cover, a clamping device and a connecting stub. The base has a holding side, a knife-holding end, a connecting end opposite to the knife-holding end and a holding cavity. The holding cavity is defined in the holding side and has an opening defined in the knife-holding end. The cover is pivotally connected to the base to close the holding cavity. The clamping device is mounted on the base and holding the cover on the base to close the holding cavity. The connecting stub is mounted on the connecting end of the base and has a non-circular cross section and an engaging recess defined around the connecting stub. Accordingly, the knife connector can detachably and changeably connect a blade body to a handle to fit with different kinds of cutting tools.Type: ApplicationFiled: September 5, 2008Publication date: March 11, 2010Inventor: Kun-Chen CHEN
-
Publication number: 20100000100Abstract: The invention relates to a hand jig saw having a chucking device for a tool that can be moved back and forth, particularly a jig saw blade (15), the device having a centering piece (18) firmly connected to a drivable rod (13), the centering piece having an axial insertion slot (26) for a shank of the tool and at least one clamping body (19), which can be displaced in a transverse channel (27) extending transversely to the insertion slot (26) and immerses into the insertion slot (26), for clamping the shank (153). For displacement, the clamping body interacts with a chucking cam (28) configured on a chucking sleeve (20), which can be rotated relative to the centering piece (18), is disposed concentrically thereto and spring-loaded in the direction of rotation.Type: ApplicationFiled: April 7, 2008Publication date: January 7, 2010Inventor: Daniel Saegesser
-
Patent number: 7574803Abstract: A saw for undercutting door jambs or trim including a saw blade attached to a flange having a first portion attached to the saw blade, a second, offset portion that extends away from a plane defined by the first portion and a third portion that extends away from the second portion in a plane generally parallel with the first portion. The third portion of the flange has a saw attachment portion for use with a general purpose saw.Type: GrantFiled: February 1, 2006Date of Patent: August 18, 2009Inventor: Gregory G. Parker
-
Patent number: 7526867Abstract: Cutting apparatus is provided which includes clamping apparatus with two clamping members movable between a clamped position, wherein a portion of the saw blade is secured in position in use, and an unclamped position, wherein the saw blade is movable with respect to the clamping members. The apparatus is attached to or is integrally formed with shaft means which are substantially circular in cross section. The apparatus also includes the ability for user selection to operate the apparatus as a jigsaw or a scroller by operation of a locking mechanism.Type: GrantFiled: September 19, 2003Date of Patent: May 5, 2009Assignee: GMCA PTY LimitedInventor: Keith Park
-
Patent number: 7516554Abstract: A hack saw having a blade holding assembly and a blade lock assembly. The blade lock assembly having moveable blade lock means adapted to receive a blade therebetween, mechanism for moving the blade lock means to a position to hold a blade in place.Type: GrantFiled: January 4, 2007Date of Patent: April 14, 2009Assignee: Great Neck Saw Manufacturers, Inc.Inventor: Qiu Jian Ping
-
Patent number: 7497154Abstract: A hand-guided power reciprocating saw has a machine housing, a saw blade drivable by a motor into a stroke motion, a guide device having two guide elements resting against the saw blade at opposite sides of the saw blade and operative for guiding and supporting the saw blade crosswise to a sawing direction, the guiding device further having a two-armed pivot lever with lever arms on each of which a corresponding one of the guide elements is situated, the guiding device also having an adjusting mechanism for adjusting a transverse spacing between the guide elements, a holder in which the guide device is integrated and which is configured to be mounted in the machine housing and/or to a base plate attached to the machine housing, the pivot lever being pivotally supported on the holder and the adjusting mechanism being accommodated in the holder.Type: GrantFiled: September 19, 2005Date of Patent: March 3, 2009Assignee: Robert Bosch GmbHInventors: Stefano Delfini, Daniel Saegesser, Thomas Ruoff
-
Publication number: 20090044416Abstract: The invention is based on a handheld power saw, having a coupling means (10) for retaining and driving a saw blade (12), and having a guide assembly (14) for guiding an oscillating motion (16) of the saw blade (12). It is proposed that the guide assembly (14) includes at least one lateral bracing means (18, 18?) for shielding the coupling means (10) from shear forces acting on the saw blade (12).Type: ApplicationFiled: January 3, 2006Publication date: February 19, 2009Inventors: Adolf Zaiser, Juergen Wiker, Wofgang Hirschburger, Joerg Albrecht, Rudolf Fuchs, Juergen Stoeger, Violaine Holtzmann
-
Patent number: 7441338Abstract: A clamping device for toolless clamping of saw blades equipped with the clamping shank for a hand machine tool has two clamping parts that are pressable against each other. Each of the clamping parts is provided with a support surface for the clamping shank of a saw blade insertable between the clamping parts. At least one of the clamping parts is movable in relation to the other of the clamping parts in order to clamp and release the clamping shank. An independent actuating element is movable by hand and provides a sliding movement or a rotating movement.Type: GrantFiled: August 30, 2005Date of Patent: October 28, 2008Assignee: Robert Bosch GmbHInventors: Stefano Delfini, Daniel Saegesser, Tobias Wunderli
-
Publication number: 20080219783Abstract: A cutting segment of a cutting tool for cutting or drilling a brittle work piece such as stone, bricks, concrete and asphalt, and a cutting tool. The cutting segment includes a cutting surface for cutting a work piece and a number of abrasive particles arranged in a plurality of rows. Each of the abrasive rows includes high-concentration parts and low-concentration parts. The high-concentration parts are grouped together to form a high-concentration area on the cutting surface and the low-concentration parts are grouped together to form a low-concentration area on the cutting surface. The cutting segment and the cutting tool are capable of improving cutting rate and useful life.Type: ApplicationFiled: December 28, 2005Publication date: September 11, 2008Applicants: EHWA DIAMOND INDUSTRIAL CO., LTD., GENERAL TOOL, INC.Inventors: Soo-Kwang Kim, Joon Ho Chang, Hee-Dong Park, Jong-Ho Kim
-
Publication number: 20080216631Abstract: An attachment for a reciprocating tool that enables quicker and simpler exchanging of tool bits. The attachment may have a screw that grips onto, or passes through a hole in, a tool bit, thereby fixedly holding the tool bit to the attachment. Alternatively, the attachment may have a spring-loaded, pivoting arm that grips onto, or passes through a hole in, a tool bit. In such an embodiment, a see-saw shaped lever may be pressed to decompress the spring and thereby release the tool bit. The attachment also is capable of providing a standard tool bit connection, so as to receive and secure ordinary tool bits.Type: ApplicationFiled: July 19, 2006Publication date: September 11, 2008Inventors: Jon Ritter, Rebecca Ritter
-
Publication number: 20080092714Abstract: A semiconductor dicing blade comprising a blade body, a first grit located within a core of the blade body, and a second different grit located on a side surface of the blade body wherein the first grit has a first grit size and is exposed at a lead cutting edge of the blade body, and wherein a largest grit particle of the second different grit is smaller than a smallest grit particle of the first grit. A method of cutting a semiconductor wafer is also provided.Type: ApplicationFiled: October 9, 2006Publication date: April 24, 2008Applicant: Texas Instruments IncorporatedInventors: Ariel L. Miranda, Jeniffer V. Otero, Richard M. Ainza
-
Patent number: 7328514Abstract: The invention relates to a power tool with a reciprocating blade, such as a jigsaw, in which the blade can have linear and pendulum movement components imparted thereon and also to a blade holder assembly. There is provided a bearing for a holder member which allows control of the movement of the holder in relation to both movement components, said bearing including a first part though which the holder member passes and a second part in relation to which the holder member and the first part are movable.Type: GrantFiled: March 15, 2005Date of Patent: February 12, 2008Assignee: GMCA Pty LimitedInventor: Keith Park
-
Patent number: 7325315Abstract: A saw blade clamping arrangement for a power tool including a drive shaft and a saw blade releasably interconnected with the drive shaft for reciprocating motion along a longitudinal axis. The saw blade clamping arrangement includes a support mechanism interconnected with the drive shaft, the support mechanism configured to selectively receive the saw blade in first and second orientations, an actuator mounted on the drive shaft and rotatable relatively to the drive shaft between an engaged position and a disengaged position, the actuator including first and second locking cam surfaces, and first and second locking members operatively associated with the actuator, and movable between a locked position that selectively locks the blade to the corresponding first and second orientations and an unlocked position that releases the blade. The first and second locking members including first and second follower surfaces driven by the respective first and second locking cam surfaces.Type: GrantFiled: October 5, 2004Date of Patent: February 5, 2008Assignee: Black & Decker Inc.Inventors: Jonathan D Bigden, Joseph D Anderson, Brian P Wattenbach, Michael O'Banion
-
Publication number: 20070266838Abstract: A saw blade mounting structure formed of two saw blade clamps and used in a scroll saw to hold a saw blade between two suspension arms in which each saw blade clamp comprises a mounting block pivotally connected to one suspension arm and provided with a through hole and a stop flange, a clamping block with a through hole, an operating member, a first rod member fixedly connected to the operating member and inserted through the through hole of the clamping block, a second rod member eccentrically extending from one end of the first rod member and inserted through the through hole of the mounting block and screwed into a check nut for enabling the first rod member to move the clamping block relative to the stop flange of the mounting block so as to lock/release the saw blade upon forward/backward rotation of the operating member.Type: ApplicationFiled: May 15, 2007Publication date: November 22, 2007Applicant: Rexon Industrial Corp., Ltd.Inventor: Jung-Huo Chen
-
Patent number: 7290343Abstract: A motor-driven saw has a gearing housing (4), which has at least two housing parts (6, 8), a stroke bar (10), which in operation executes a stroke movement in the direction of a stroke axis (26), and a reciprocating movement generator (36) that can be turned on or off, by virtue of which the stroke movement is superimposed with a reciprocating movement executed transverse to the stroke axis (26). All bearing zones (30, 44, 62) over which the reciprocating movement generator (36) is supported on the gearing housing (4) in a preferred direction of advance (16) of the saw, are arranged in the same carrying housing part (6).Type: GrantFiled: December 17, 2003Date of Patent: November 6, 2007Assignee: Hilti AktiengsellschaftInventor: Markus Hartmann
-
Patent number: 7257900Abstract: A saw blade incorporates an integrated cant angle. The saw blade includes a cutting portion having a toothed edge and opposite edge. The toothed edge defines a cutting plane. A shank portion extends from the cutting portion and is laterally offset from the opposite edge of the cutting portion defining a step thereat. The shank includes an end portion including a mounting edge, the mounting edge and step define a mounting plane which is angularly offset from the cutting plane.Type: GrantFiled: January 2, 2002Date of Patent: August 21, 2007Assignee: Black & Decker Inc.Inventors: Thomas J. Wheeler, Nicholas E. Achterberg, Thomas M. Gaffney
-
Patent number: 7251897Abstract: The present invention relates to a quick-change saw blade clamping device which includes an output shaft, a cylindrical rotatable sleeve and a torsion spring. The output shaft is coupled to a blade carrier which is disposed within the cylindrical rotatable sleeve. A rotatable member is disposed within the cylindrical rotatable sleeve. A locking member pivotally connected to the blade carrier lies in a guide groove which is formed on the blade carrier. A spiral surface is formed on the front end of the rotatable member. When the cylindrical rotatable sleeve is manually rotated, the spiral surface urges the locking member to press the blade into a locking position. The present invention provides an easily-operated clamping device of simple structure and small size.Type: GrantFiled: April 13, 2004Date of Patent: August 7, 2007Assignee: Positec Power Tools (Suzhou) Co., Ltd.Inventor: Sang Shuhua
-
Patent number: 7216434Abstract: An electric-powered cutting machine includes: an electric motor, a housing for the electric motor; a plunger driven by the electric motor to reciprocate; and a blade holding mechanism. The blade holding mechanism holds a blade at a tip end portion of the plunger. The blade holding mechanism includes: a blade receiving face including a groove, a swinging member and a pressing member. The groove is shaped substantially the same as an attachment portion of the blade. The swinging member has one and other ends and pivoted at a swing fulcrum. The one end has a blade pressing portion capable of being disposed to oppose to the groove. The other end elongates to separate from the plunger. The pressing member presses the one end toward the groove.Type: GrantFiled: April 21, 2003Date of Patent: May 15, 2007Assignee: Hitachi Koki Co., Ltd.Inventors: Naoya Eto, Shinichi Sakuma
-
Patent number: 7210232Abstract: A saw blade clamping mechanism includes a holder connectable to a reciprocating shaft of a power sawing tool. The holder has a sliding way, a receiving slot for insertion of a saw blade, and a through hole in communication between the sliding way and the receiving slot. A steel ball is movably installed in the through hole. A sliding block is mounted in the sliding way and moveable between a first position for receiving the steel ball for removal of the saw blade out of the receiving slot and a second position to force the steel ball into the receiving slot to lock the saw blade. A spring member supports the sliding block in the second position. A control knob is connected to the sliding block for operation by the user to move the sliding block from the second position to the first position.Type: GrantFiled: December 5, 2005Date of Patent: May 1, 2007Assignee: Mobiletron Electronics Co., Ltd.Inventor: Dung-Chin Guo
-
Patent number: 7114259Abstract: A reciprocating saw, comprises: a housing [13], a plunger [15], a driving gear [7], a link shaft [4], a pushing member [9], a lifting member [11], a front end portion of said link shaft [4] rotatablely connect with a rear end portion of said plunger [15], said lifting member [1] connect with said housing [13] and contact with a front end portion of said pushing member [9], said lifting member [11] also contact with a sleeve bearing which disposed on a rear end portion of said plunger [15], a angle between lines through a center of a first eccentric shaft [5], a rotating center of said driving gear [7] and a rotating center of a second eccentric shaft [8] is an obtuse angle. Said pushing member will move back and forth when said link shaft [4] move forward, the movement of said pushing member in the direction opposite to the movement of said link shaft will eliminate the vibration which resulting from the reciprocating movements of said plunger.Type: GrantFiled: November 14, 2003Date of Patent: October 3, 2006Assignee: Positec Power Tools (Suzhou) Co., Ltd.Inventor: Haiqing Wang
-
Patent number: 6854373Abstract: A blade holder and adapter for a scroll saw includes a slider within a slot in a scroll saw arm, with a retainer on the slider for receiving a scroll saw blade holder. An adjuster on the slider allows the slider to move within the slot and may be tightened to retain the slider in a fixed position. Moving the slider within the slot changes the angle of the blade relative to the table of the scroll saw.Type: GrantFiled: March 7, 2003Date of Patent: February 15, 2005Assignee: R.B. Industries, Inc.Inventor: Corey D. Barkhurst
-
Patent number: 6848186Abstract: A blade clamping device includes a driving shaft and a base member fixedly mounted to the driving shaft. An opening is defined in the base member and a blade is inserted in the base member and connected to the driving shaft. A cam member is pivotably engaged with the opening of the base member and a cam head contacts a side of the blade. The base member is received in a casing which is connected to the electric saw and an opening is defined in the casing. A lever is pivotably engaged with the opening of the casing and includes a pushing end which is located beneath a bar of the cam member so that when pivoting the lever, the pushing end pivots the cam member to remove the cam head from the blade.Type: GrantFiled: August 18, 2003Date of Patent: February 1, 2005Assignee: Rexon Industrial Corp., Ltd.Inventors: Ruey-Zon Chen, Eric Lo, George Ku
-
Patent number: 6810782Abstract: A tool fastening mechanism has a housing 2, in which a clamping opening 3 is embodied for receiving a tapering tool shaft clamping end 4 of a tool part 5. The clamping opening 3 tapers inward in the introduction direction of the clamping end 4 of a tool part 5, and furthermore the tapering sides are inclined toward one another in a plane extending perpendicular to the introduction direction, as a result of which the opening has a trapezoidal cross section, and the length of this cross section decreases away from the orifice of the clamping opening 3. The housing 2 furthermore has a transverse opening 7, which intersects the clamping opening 3 and in which a locking pin 8 is received.Type: GrantFiled: November 26, 2002Date of Patent: November 2, 2004Assignee: Robert Bosch GmbHInventors: Steffen Wuensch, Harald Krondorfer, Mather John Carr, Anne Tregoning Miller, Neil Pollock, Hans Kaiser, Daniel Saegesser, Daniel Grolimund
-
Patent number: 6742267Abstract: A reciprocating saw including a housing, a motor supported by the housing, a spindle mounted for reciprocation relative to the housing and having a front end for supporting a saw blade, the spindle being movable through a cutting stroke and a return stroke, the cutting stroke having a stroke length, and a pivot body interconnecting the spindle and the motor. The position of the pivot axis of the pivot body may be movable relative to the housing to change the stroke length of the spindle. A shock absorber may be operatively positioned between the motor and the front end of the spindle and may be at least partially mounted within the spindle.Type: GrantFiled: April 10, 2001Date of Patent: June 1, 2004Assignee: Milwaukee Electric Tool CorporationInventors: Dragomir C. Marinkovich, Roger D. Neitzell
-
Patent number: 6725757Abstract: A scroll saw includes upper and lower driving arms, a saw blade, a blade retaining unit, push rod, a biasing unit, and an actuating unit. The blade retaining unit includes a pivot seat mounted pivotally on a distal end of the upper driving arm, and an upper blade holder mounted on the pivot seat. The pivot seat is pivotable relative to the upper driving arm from a first position, where the upper blade holder engages an upper blade end of the saw blade, to a second position, where the upper blade holder disengages from the upper blade end. The biasing unit provides a biasing force that pivots the pivot seat to the first position. The actuating unit provides a pressing force on the push rod to push the pivot seat to pivot to the second position so as to permit release of the saw blade.Type: GrantFiled: March 27, 2003Date of Patent: April 27, 2004Inventor: Pei-Lieh Chiang
-
Patent number: 6725548Abstract: A reciprocating saw comprising a reciprocatable spindle having an end adapted to receive a saw blade, and a blade clamp mechanism connected to the spindle and adapted to attach the saw blade to the spindle. The blade clamp mechanism includes an actuating member mounted on the end of the spindle, a locking member operatively associated with the actuating member, and a biasing member interconnected with the actuating member for biasing the actuating member toward an engaged position. A cover encloses a substantial portion of the biasing member. A housing, made from a thermally insulative material, is mounted to the actuating member. An ejecting member is interconnected with the spindle and is capable of engaging the saw blade such that the saw blade is urged away from the end of the spindle.Type: GrantFiled: September 1, 2000Date of Patent: April 27, 2004Assignee: Milwaukee Electric Tool CorporationInventors: Scott G. Kramer, Thomas R. Bednar, Richard H. Jungmann, Jeffary R. Sonnentag
-
Patent number: 6711825Abstract: A hacksaw includes a U-shaped frame and a handle connected to a first end of the frame and an engaging port is connected to a second end of the frame. A groove is defined longitudinally in the handle and a passage is defined in the handle. The passage intersects the groove and communicates with the groove. A retaining member is movably received in the passage and a recess defined in the retaining member so that a blade extends through the groove and the recess. The blade is engaged with the engaging port. A cam member is pivotably connected an end of the retaining member such that the retaining member is lifted to secure the blade between an inside of the recess and the inside of the groove by pivoting the cam member. The blade is easily loosened by pivoting the cam member in the other direction.Type: GrantFiled: June 6, 2002Date of Patent: March 30, 2004Inventor: Chin-Hui Chen
-
Publication number: 20040045425Abstract: The invention relates to a fixing (4) for a saw blade (5) of a jigsaw, comprising a fixing element (15) with a receiving cavity (16) for receiving the end of the saw blade (5) for fixedly clamping and clamping means (17) which engage on the saw blade (5) and which are situated between the saw blade (5) and a wall (20) of the receiving cavity (16) running obliquely in the direction of the saw blade (5), and which means (17) have a substantially circular cross-section, each of which is situated on either side of the saw blade (5).Type: ApplicationFiled: March 18, 2003Publication date: March 11, 2004Inventors: Jan Peter Houben, Cornelis Johannes Maria Van Dun
-
Patent number: 6662698Abstract: A saw blade retaining apparatus is provided for selectively retaining one in a series of saw blades having unique thicknesses. The retaining apparatus includes a rocker arm supported by a pair of lateral walls. The rocker arm includes a contoured contact surface which cooperates with a contoured stop segment extending between the lateral walls to securely retain one of a series of saw blades having unique thicknesses.Type: GrantFiled: January 2, 2002Date of Patent: December 16, 2003Assignee: Black & Decker Inc.Inventors: Thomas J. Wheeler, Nicholas E. Achterberg, Thomas M. Gaffney
-
Patent number: 6622602Abstract: A device (1) is provided for slicing loaves and similar bakery products. The device includes a stationary frame (2) including a support (4, 5) for supporting the loaves or bakery products. A blade carrier (10) holds a plurality of thin elongate cutting blades (11) at spaced locations with respect to one another. Each blade includes a cutting edge (13) for cutting the loaves or bakery products. The device includes a blade carrier drive (51-56, 65-68) which provides for first and second movement of the blade carrier. A cleaning mechanism (70, 71) is provided for cleaning the cutting blades.Type: GrantFiled: December 28, 2001Date of Patent: September 23, 2003Assignee: Rompa Patent Beheer B.V.Inventor: Jozef J. Th. Rompa