Using Vacuum Or Reverse Circulation Patents (Class 173/198)
  • Patent number: 11446780
    Abstract: A dust collector includes a body configured to be removably attached to a lower side of a tool body of a drilling tool, a dust storing part to be disposed on a lower side of the body, a sliding part having a suction port and held by the body so as to be slidable in a front-rear direction, a dust transfer passage extending within the sliding part and connecting the suction port and an inlet of the dust storing part, and a tool connection passage disposed within an internal space of the body and configured to connect an outlet of the dust storing part and an inlet of the tool body of the drilling tool. The dust storing part includes the inlet, a filter, a dust storing space and the outlet. The filter is disposed forward of the inlet of the dust storing part.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: September 20, 2022
    Assignee: MAKITA CORPORATION
    Inventors: Keita Mori, Kiyonobu Yoshikane
  • Patent number: 11292099
    Abstract: A dust collecting system includes a power tool and a dust collector. The dust collector includes a body, a sliding part, a biasing member, a lock member and an actuator. The body is configured to be removably attached to the power tool. The sliding part is held by the body so as to be slidable along a sliding axis. The biasing member is configured to bias the sliding part forward to hold the sliding part in a first position. The lock member is configured to lock the sliding part relative to the body in a second position. The actuator is configured to unlock the sliding part locked by the lock member, by operating in response to a motor-starting operation for the power tool by a user.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: April 5, 2022
    Assignee: MAKITA CORPORATION
    Inventor: Hajime Takeuchi
  • Patent number: 11014209
    Abstract: An adaptor for a dust extractor is provided including a housing having a top portion and a bottom portion, a first aperture formed in the top portion of the housing, a second aperture formed in the bottom portion of the housing, and an adaptor catch having a first end and a second end. The adaptor catch is vertically slidable within the housing between a first catch position, where the first end projects through the first aperture, and a second catch position, where the first end is located flush with or inside of the housing. The second end of the adaptor catch is accessible through the second aperture. A first biasing mechanism biases the adaptor catch towards the second catch position.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: May 25, 2021
    Assignee: Black & Decker Inc.
    Inventors: Pablo Garcia, Arthur Lauer, Stefan Sell
  • Patent number: 10907418
    Abstract: An Earth drill bit includes a bit body assembly and a plurality of separately movable cutting elements carried by the bit body assembly. The bit body assembly is arranged around a central bit body axis and includes a hydraulic circuit. The plurality of separately movable cutting elements is movable in a direction parallel to the central bit body axis and supported by fluid in the hydraulic circuit.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: February 2, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Xianwu Ling
  • Patent number: 10888987
    Abstract: A power tool accessory for elevating the base of a power tool from off a work surface and a method of use. The accessory or ski comprises a bridge, a first side wall coupled to the bridge, and a second side wall coupled to the bridge opposite the first side wall. The bridge, the first side wall, and the second side wall form an upper surface and an opening through which a power cord may pass. The upper surface is configured to receive a base of a power tool. Because the ski elevated the power tool from off of a work surface, dust, debris, and grit is not brought into the intake of the power tool, the power cord is not kinked, and the base of the power tool is not worn down on the work surface.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: January 12, 2021
    Assignee: Skitter & Squirt Adventures, LLC
    Inventor: Jack M. King, Jr.
  • Patent number: 10603753
    Abstract: A dust extractor for a drill includes a housing having an engagement region for receiving the drill when connected to the dust extractor; and a latch mechanism. The latch mechanism includes a latch moveably mounted within the housing and moveable between a first position and a second position, a biasing mechanism biasing the latch towards the first position, and a catch attached to the latch. The catch has a chamfer which is arranged so that the chamfer slidingly engages the drill and moves the latch from its first position towards its second position when the drill enters the engagement region.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: March 31, 2020
    Assignee: Black & Decker
    Inventor: Arthur Lauer
  • Patent number: 10507556
    Abstract: A dust collector for an electric power tool includes a main body case, a dust box, a sliding portion, and a dust collecting route. The main body case includes an exhaust port, the main body case being configured to be installed on an electric power tool. The dust box internally includes a filter. The sliding portion is disposed on the main body case. The sliding portion has a front end on which a nozzle with a suction opening is disposed. The sliding portion is slidable in a front-rear direction. The dust collecting route is from the suction opening to the exhaust port passing through the filter. The main body case includes a guiding portion through which the sliding portion passes, and the guiding portion allows the sliding portion to project rearward when the sliding portion slides.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: December 17, 2019
    Assignee: MAKITA CORPORATION
    Inventors: Yoshitaka Machida, Kiyonobu Yoshikane
  • Patent number: 10045671
    Abstract: A hand-held power tool suction extractor apparatus comprises at least one fastening unit configured to mount on a hand-held power tool. The at least one fastening unit includes at least one holding element configured to be positioned on the hand-held power tool and at least one fastening element configured to exert a holding force on the at least one holding element. The at least one fastening unit also includes at least one movably mounted position fixing element configured to fix the at least one fastening element.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: August 14, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Christian Wiedemann, Michael Weiss, Carsten Diem, Johannes Schnitzler, Juergen Bochert
  • Patent number: 9539687
    Abstract: A connection portion between a holder side part of a chip suction path and a main body side part of the chip suction path 12 is formed to have a non-contact structure, resulting in that not only a chip generated at a machining point but also a chip remained so as to be suspended in a machining atmosphere can be sucked and discharged.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: January 10, 2017
    Assignees: DMG MORI SEIKI CO., LTD., FUJI JUKOGYO KABUSHIKI KAISHA
    Inventors: Morihiro Hideta, Koji Sato, Hisayuki Oide, Shinya Matsuo, Tatsuo Nakahata
  • Patent number: 8997887
    Abstract: A power tool performs a predetermined operation by using a tool bit and has a grip part and a dust suction device. The dust suction device has a dust suction part that extends in an axial direction of the tool bit and sucks and collects dust generated during operation at a tip of the tool bit. The dust suction part can be moved between a first position in which the dust suction part covers a bit tip of the tool bit and a second position in which the bit tip is exposed. The dust suction device further has an operation mode switching mechanism that is capable of switching between a first operation mode in which the dust suction part is allowed to move between the first and second positions and a second operation mode in which the dust suction part is locked in the second position.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: April 7, 2015
    Assignee: Makita Corporation
    Inventors: Masanori Furusawa, Yoshihiro Kasuya, Hajime Takeuchi
  • Patent number: 8978781
    Abstract: A dust shroud assembly for a power tool includes a shroud portion, a barrel, and a helical spring. The barrel includes an upper portion slidably received within a first end portion of the shroud portion. The barrel defines a helical channel. The helical spring is at least partially rotatably engaged with the helical channel and rotationally fixed with respect to the shroud portion. The helical spring is configured to bias the barrel outwardly from the first end portion.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: March 17, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Mitchell Wayne Burdick, Stanford Jensen, Spencer Loveless
  • Patent number: 8944182
    Abstract: A suction module which can be connected to a hand-held power tool, and a hand-held power tool including the suction module, is disclosed. The suction module includes a suction head which can receive a tool of the hand-held power tool that is rotatable around a tool axis and a fan with a fan wheel that is rotatable around a fan axis for suctioning air from the suction head. The suction head is connected to the fan by an intake channel, which in a first section runs along a longitudinal axis of the suction module and in a second section along a vertical axis of the suction module that is fixed transverse to the longitudinal axis. The fan axis runs parallel to a narrow axis, which is aligned transverse to the longitudinal axis and transverse to the vertical axis.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: February 3, 2015
    Assignee: Hilti Aktiengesellschaft
    Inventors: Henry Chen, Sean Wang, Torsten Luettich, Matthias Kuemmerle, Bernhard Link
  • Patent number: 8915309
    Abstract: A dust box joined to a dust collecting device is formed of a box body, and a lid body that is joined to the box body by a hinge and can open and close an opening of the box body, and a main filter and a pre-filter are attached to the lid body.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: December 23, 2014
    Assignee: Makita Corporation
    Inventors: Yasuhiro Kakiuchi, Yoshitaka Machida
  • Patent number: 8906124
    Abstract: A dust collecting device is provided which is capable of preventing static charge while rationally collecting dust generated during operation. A dust collecting device is removably attached to a power tool and can be carried together with the power tool, and collects dust generated when a predetermined operation is performed on a workpiece by driving a tool bit coupled to the power tool. Further, the dust collecting device has a dust suction region that sucks dust generated during operation in response to the operation of the tool bit, a dust transfer region that transfers the dust sucked in the dust suction region, and a dust storage region that communicates with the dust transfer region and stores the dust. Furthermore, the dust collecting device has a grounding member through which static charge on the dust is dissipated.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: December 9, 2014
    Assignee: Makita Corporation
    Inventors: Kiyonobu Yoshikane, Yoshitaka Machida
  • Publication number: 20140352155
    Abstract: A hand-held electric power tool having a tool that can be rotated around a rotational axis by the drive unit, having a protective cover that at least partially surrounds the tool, having an outlet opening that conveys out of the protective cover the material removed from the workpiece that is to be machined, and having a suction adapter that is connected to the protective cover and that has a connection section with a suction opening for connecting a suction device, the suction adapter having a guide device for guiding the material being removed, the guide device having an outlet opening that differs from the suction opening.
    Type: Application
    Filed: August 15, 2014
    Publication date: December 4, 2014
    Inventors: Markus Looser, Konstantin Baxivanelis, Guenter Haas, Bernhard Link
  • Patent number: 8876932
    Abstract: A power tool dust collecting device includes a fan chamber and a dust collecting chamber. The fan chamber is formed in a housing which is mountable on a hammer drill and in which a suction opening is provided protrudingly. The fan chamber houses a fan that rotates in accordance with driving of a motor. The dust collecting chamber is formed on an upstream side of the fan chamber. Mounted on the dust collecting chamber is a filter through which passes air that has been sucked up from the suction opening by the rotation of the fan and which collects dust included in the air. An air pumping unit that pumps air from a downstream side of the filter toward an upstream side is provided inside the housing.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: November 4, 2014
    Assignee: Makita Corporation
    Inventors: Yoshitaka Machida, Kiyonobu Yoshikane
  • Publication number: 20140262405
    Abstract: A vacuum system for removing rubbish generated during fastening operations is provided. The vacuum system includes a fastening tool for driving the fastener, a suction nozzle attached to the fastening tool and a vacuum source in fluid communication with the suction nozzle. The vacuum system also includes a sensor to detect the position of the fastening tool and a vacuum valve actuator to selectively open or close a vacuum valve to provide vacuum to the suction nozzle according to the position of the fastening tool.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Applicant: DENSO INTERNATIONAL AMERICA, INC.
    Inventor: Daniel Jones
  • Publication number: 20140231112
    Abstract: A hand power tool device includes a drive unit, an electronic unit, and a suction unit configured to extract dust out of a working region by suction. The hand power tool device further includes a cooling unit configured, at least partially, to cool the drive unit and/or the electronic unit. The cooling unit and the suction unit are configured, at least partially, as a single piece.
    Type: Application
    Filed: February 19, 2014
    Publication date: August 21, 2014
    Applicant: Robert Bosch GmbH
    Inventors: Manfred Schuele, Helmut Wanek, Cornelius Boeck, Joachim Schadow, Joerg Maute, Florian Esenwein, Manfred Lutz, Daniel Barth
  • Patent number: 8800682
    Abstract: A power tool with a working head for holding a working element. The power tool includes a motor having a motor output shaft for driving said working element and a duct having an inlet locatable in proximity to a point of contact between the working element and a workpiece. A dust collection chamber has an inlet in fluid communication with an outlet from said duct, and an outlet in fluid communication with atmospheric air. A fan is operable to transport air from the inlet of said duct to the inlet of said dust collection chamber. A first drive wheel is mounted on the motor output shaft. A second, driven, wheel mounted on a second shaft and a drive belt connects the first, drive wheel to the second, driven wheel, for transmitting power from the motor output shaft to the second shaft. The fan is mounted on the second shaft.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: August 12, 2014
    Assignee: Black & Decker Inc.
    Inventor: Andrew Walker
  • Patent number: 8793835
    Abstract: A system and method for capturing resultant dust from power tool operation are disclosed. The system comprises a device that includes a housing with a substantially cylindrical shape. The housing has a first end that tapers to an opening for a tool bit and at least one suction port that opens into an interior volume of the housing. The housing has a second end configured to couple to a power tool. An air intake passage attaches to the exterior surface of the housing body such that an interior volume of the air intake passage connects to an interior volume of the housing. An exit passage is coupled to the air intake passage and is configured to couple to a vacuum.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: August 5, 2014
    Inventor: Jack M. King, Jr.
  • Publication number: 20140138114
    Abstract: A dust collecting device 140 is provided which is attached to an electric hammer 101 having a side handle 110 which is removably attached to a body 103. The dust collecting device 140 has a dust collecting hood 141 and a hose holder 145. The side handle 110 has a mounting ring 111 which is mounted on the body 103, a grip 121 and a grip securing part 131. The grip 121 is secured by moving relative to the grip securing part 131 in a direction crossing an axial direction of the hammer bit 200. By this relative movement for securing the grip 121, the hose holder 145 is held between the grip 121 and the grip securing part 131.
    Type: Application
    Filed: November 12, 2013
    Publication date: May 22, 2014
    Inventors: Hajime TAKEUCHI, Masanori FURUSAWA, Yoshiro TADA
  • Publication number: 20140027139
    Abstract: A connection portion 22a between a holder side part 14 of a chip suction path 12 and a main body side part 15 of the chip suction hath 12 is formed to have a non-contact structure, resulting in that not only a chip generated at a machining point but also a chip remained so as to be suspended in a machining atmosphere can be sucked and discharged.
    Type: Application
    Filed: July 24, 2013
    Publication date: January 30, 2014
    Applicants: Fuji Jukogyo Kabushiki Kabushiki Kaisha, Mori Seiki Co., Ltd.
    Inventors: Morihiro HIDETA, Koji Sato, Hisayuki Oide, Shinya Matsuo, Tatsuo Nakahata
  • Patent number: 8636084
    Abstract: An auxiliary device for an electrical work machine is provided. The auxiliary device can be attached to the electrical work machine, and the electrical work machine can be equipped with a tool in a tool holder. The auxiliary device comprises a housing comprising a handle and an attaching device. The housing can be attached to the electrical work machine with the attaching device. The housing comprises a handling section, which is disposed next to the attaching device, and which comprises an opening, which allows at least the tool holder to be freely accessible from the sides. The handle is permanently connected to the handling section.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: January 28, 2014
    Assignee: Hilti Aktiengesellschaft
    Inventor: Oliver Ohlendorf
  • Publication number: 20140020922
    Abstract: In a dust collection device that collects dust particles that an impact tool generates, disclosed is a feature that can accommodate the lengths of tool bits that are mounted to the impact tool when a machining operation is executed by exchanging tool bits of different lengths. The dust collection device collects dust that the impact tool generates and is attached to said impact tool that, in the lengthwise direction, linearly operates the tool bit mounted to the end region of a tool body. The dust collection device has a dust intake port that sucks dust, and said dust intake port can be repositioned in the lengthwise direction of the tool bit in accordance with the length in the lengthwise direction of said tool bit.
    Type: Application
    Filed: July 4, 2011
    Publication date: January 23, 2014
    Applicant: MAKITA CORPORATION
    Inventors: Hiroki Ikuta, Ken Yamauchi, Takamasa Hanai, Yoshitaka Machida, Masanori Higashi, Tatsuo Nakashima, Yoshinori Sasaki
  • Publication number: 20130213683
    Abstract: A power tool assembly includes a hand-held power tool, a dust collector removably coupled to the power tool, and first and second power tool battery packs each of which is interchangeably coupled with the power tool and the dust collector for separately powering the power tool and the dust collector, respectively.
    Type: Application
    Filed: September 6, 2012
    Publication date: August 22, 2013
    Inventors: Michael R. Brewster, Tsz Kin Wong, Chin Hung Lam, Brian P. Wattenbach, Brandon L. Verbrugge, Roland Vögele, Kurt Limberg, Ming Cong Chen
  • Publication number: 20130206440
    Abstract: A dust collection device, that collects dust particles generated by an impact tool, has a feature that enables the attachment of the device to the impact tool, which is not provided with an attachment section for the device. The dust collection device has a tool body and an auxiliary handle, attached removably to the tool body, and is attached to an electric hammer that, in the lengthwise direction, linearly operates a tool bit mounted to the tip region of the tool body, and collects dust generated by the electric hammer. The dust collection device has: a dust collection unit that has a dust intake port at the tip; a dust collection hose, connected to the dust collection unit, for transferring dust to the downstream side; and a hose-holding unit that holds the dust collection hose. The hose-holding unit can be attached to and removed from the auxiliary handle.
    Type: Application
    Filed: July 4, 2011
    Publication date: August 15, 2013
    Applicant: MAKITA CORPORATION
    Inventors: Hiroki Ikuta, Ken Yamauchi, Takamasa Hanai, Masao Miwa, Tomohiro Ukai, Shusaku Wakatsuki, Akihiro Ito
  • Publication number: 20130192862
    Abstract: The present invention is generally directed to an oscillating power tool system. The tool system may include an oscillating power tool. The oscillating power tool may include a housing and a clamp assembly for coupling a tool accessory to the housing. The system may also include a dust collection accessory. The dust collection accessory may include a clamp for coupling to the housing and a dust collection apparatus coupled to the clamp for receiving dust generated by the tool accessory. The present invention is also generally directed to a dust collection accessory for a power tool. The accessory may include a clamp for coupling the accessory to a body of the power tool. The accessory may also include a dust collection apparatus coupled to the clamp for receiving dust generated by the power tool.
    Type: Application
    Filed: November 16, 2012
    Publication date: August 1, 2013
    Applicant: BLACK & DECKER INC.
    Inventor: Black & Decker Inc.
  • Patent number: 8479354
    Abstract: The drill brush and vacuum attachment apparatus provides for attachment to a vacuum cleaner and to a drill. The diameter reduction of the shaft first end is removably chucked into a drill of choice. The drill thereby turns the shaft as the free-wheel sleeve is free to be held stationary by a user via the angled reaction bar. The bar with associated collar may adjustably positioned along the sleeve, then tightened in the desired position by the thumb screw. Various shapes and sizes of removable brushes and other tools may be threadably attached to the shaft second end and used to clean various work pieces, and especially to clean out pre-drilled holes. As a work piece is cleaned by brushes and tools, the vacuum connected to the free-wheel sleeve vacuum tube draws debris and potentially airborne materials in, thereby negating potential mess, material clouds, and ensures a healthy work place.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: July 9, 2013
    Inventor: Peter T. Doyle
  • Publication number: 20130161049
    Abstract: A feature that contributes to an improvement in the attachment to an impact tool of a dust collection device that is attached to the impact tool and that collects dust particles that said impact tool generates. The dust collection device collects dust that the impact tool generates and is attached to said impact tool that, in the lengthwise direction, linearly operates a tool bit that is mounted to the tip region of a tool body. The dust collection device has: a dust collection unit that has a dust intake port at the tip; and a dust transfer unit that is connected with the dust collection unit in order to transfer dust sucked in from the dust intake port towards the downstream side. The dust collection unit is held by the shaft section of the tool bit, and the dust transfer unit is held by the tool body.
    Type: Application
    Filed: July 4, 2011
    Publication date: June 27, 2013
    Applicant: MAKITA CORPORATION
    Inventors: Hiroki Ikuta, Ken Yamauchi, Takamasa Hanai, Masao Miwa, Tomohiro Ukai, Shusaku Wakatsuki, Akihiro Ito
  • Publication number: 20130149056
    Abstract: A vacuum device for a drilling hand tool includes a housing, a connection piece, a blower, and a collecting vessel. A drilling tool can be plugged into and through the connection device along a working axis. The blower conveys dust-laden air from the connection piece into the collecting vessel. The connection vessel includes a tray cartridge which can be removed from the housing, and a locking bar. The locking bar is hinged on the tray cartridge or on the housing and can pivot between a locking position and an unlocked position. When the locking bar is in the locking position, it presses the tray cartridge against the housing to provide pretensioning.
    Type: Application
    Filed: November 27, 2012
    Publication date: June 13, 2013
    Applicant: HILTI AKTIENGESELLSCHAFT
    Inventor: HILTI AKTIENGESELLSCHAFT
  • Patent number: 8443914
    Abstract: A hammer drill is provided with a connector equipped with a female terminal, movably between a connection position where the female terminal is located inside a plug-in port and a non-connection position where the female terminal is in retreat from inside the plug-in port. The hammer drill is also provided with a torsion spring that urges the connector toward the non-connection position. The connector is provided with a shutter portion that is located inside the plug-in port to close the plug-in port at the non-connection position and is in retreat from inside the plug-in port at the connection position. A dust collecting device is provided with a press rail that comes into abutment on the connector to move the connector to the connection position against the urging of the torsion spring as the dust collecting device is mounted.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: May 21, 2013
    Assignee: Makita Corporation
    Inventors: Shinya Bito, Kiyonobu Yoshikane, Hitoshi Iida, Shinji Onoda, Yoshitaka Machida
  • Patent number: 8342782
    Abstract: According to the invention, a drilling tool includes: a driving source; a transmission drive unit for transmitting a rotation force of the driving source; and a dust collector for collecting dust produced from a workpiece drilled by the end tool and blowing air against the workpiece, wherein a filtering means for filtering the air mixed with the collected dust and a centrifugal fan for taking in the filtered air and sending out the filtered air in a circumferential direction are provided, the centrifugal fan is disposed in a housing formed with an airflow sending port for sending a part of the air taken in to the dust collector and a discharge port for discharging a rest of the air to an outside, and a distance from the airflow sending port to the discharge port in a forward direction in a direction of rotation of the centrifugal fan is longer than the distance from the airflow sending port to the discharge port.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: January 1, 2013
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Tomomasa Nishikawa, Kenji Kobori, Shingo Yamazaki
  • Publication number: 20120318553
    Abstract: A suction module which can be connected to a hand-held power tool, and a hand-held power tool including the suction module, is disclosed. The suction module includes a suction head which can receive a tool of the hand-held power tool that is rotatable around a tool axis and a fan with a fan wheel that is rotatable around a fan axis for suctioning air from the suction head. The suction head is connected to the fan by an intake channel, which in a first section runs along a longitudinal axis of the suction module and in a second section along a vertical axis of the suction module that is fixed transverse to the longitudinal axis. The fan axis runs parallel to a narrow axis, which is aligned transverse to the longitudinal axis and transverse to the vertical axis.
    Type: Application
    Filed: December 19, 2011
    Publication date: December 20, 2012
    Applicant: Hilti Aktiengesellschaft
    Inventors: Henry Chen, Sean Wang, Torsten Luettich, Matthias Kuemmerle, Bernhard Link
  • Publication number: 20120273243
    Abstract: In a dust collection device attached to a hammer drill, a filter is provided in a dust box at a position at which the filter covers an outlet provided on a rear face of a lid body, in a state such that a filter surface projects into the dust box from the rear face of the lid body. A space is formed between an inner face of a box main body and a side face of the filter that is adjacent to the filter surface. Air outlets are provided to guide air, which flows in through an inlet, toward the space.
    Type: Application
    Filed: March 15, 2012
    Publication date: November 1, 2012
    Applicant: MAKITA CORPORATION
    Inventors: Yoshiro TADA, Kiyonobu YOSHIKANE, Yoshitaka MACHIDA
  • Publication number: 20120080206
    Abstract: A power tool including: a working head for holding a working element; a motor having a motor output shaft for driving said working head; a duct having an inlet locatable in proximity to a point of contact between the working element and a workpiece; a dust collection chamber having an inlet in fluid communication with an outlet from said duct, and an outlet in fluid communication with atmospheric air; and a fan operable to transport air from the inlet of said duct to the inlet of said dust collection chamber. The power tool further includes a first, drive wheel mounted on the motor output shaft; a second, driven wheel mounted on a second shaft; and a drive belt connecting the first, drive wheel to the second, driven wheel, for transmitting power from the motor output shaft to the second shaft; wherein the fan is also mounted on the second shaft.
    Type: Application
    Filed: October 1, 2010
    Publication date: April 5, 2012
    Applicant: BLACK & DECKER INC.
    Inventor: Andrew WALKER
  • Publication number: 20110308830
    Abstract: A power tool that performs a predetermined operation by using a tool bit and has a grip part and a dust suction device. The dust suction device has a dust suction part that extends in an axial direction of the tool bit and sucks and collects dust generated during operation at a tip of the tool bit, and the dust suction part can be moved between a first position in which the dust suction part covers a bit tip of the tool bit and a second position in which the bit tip is exposed. The dust suction device further has an operation mode switching mechanism that is capable of switching between a first operation mode in which the dust suction part is allowed to move between the first and second positions and a second operation mode in which the dust suction part is locked in the second position, and the operation mode switching mechanism is provided in a region of the grip part or its vicinity such that it can be operated with a user's hand holding the grip part.
    Type: Application
    Filed: October 19, 2009
    Publication date: December 22, 2011
    Applicant: MAKITA CORPORATION
    Inventors: Masanori Furusawa, Yoshihiro Kasuya, Hajime Takeuchi
  • Publication number: 20110266015
    Abstract: A drilling tool is disclosed. The drilling tool has a shaft and a pot-shaped base body. Chisel cutters are inserted into the annular front surface of the base body which is open on a drilling side. At least one suction opening is provided offset radially from an axis of the hammer core bit in the base of the base body facing away from the drilling side. The drilling dust can be suctioned out of the base body through the suction openings.
    Type: Application
    Filed: April 27, 2011
    Publication date: November 3, 2011
    Applicant: Hilti Aktiengesellschaft
    Inventors: Oliver OHLENDORF, Thomas Hofbrucker
  • Publication number: 20110266016
    Abstract: An auxiliary device for an electrical work machine is provided. The auxiliary device can be attached to the electrical work machine, and the electrical work machine can be equipped with a tool in a tool holder. The auxiliary device comprises a housing comprising a handle and an attaching device. The housing can be attached to the electrical work machine with the attaching device. The housing comprises a handling section, which is disposed next to the attaching device, and which comprises an opening, which allows at least the tool holder to be freely accessible from the sides. The handle is permanently connected to the handling section.
    Type: Application
    Filed: April 28, 2011
    Publication date: November 3, 2011
    Applicant: HILTI AKTIENGESELLSCHAFT
    Inventor: Oliver Ohlendorf
  • Patent number: 7909114
    Abstract: A drilling device includes an end cutting tool, a main housing, a motor, a transmission, and a dust collection unit. The end cutting tool processes a workpiece. The motor is provided in the main housing for generating a torque. The transmission transmits the torque to rotate the end cutting tool. The dust collection unit collects dust generated by the rotation of the end cutting tool. The dust collection unit includes a dust case for accumulating the dust therein. The dust case is detachable from the main housing and has an inlet and an outlet. The inlet and the outlet are oriented in a single direction.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: March 22, 2011
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Tomomasa Nishikawa, Kenji Kobori
  • Publication number: 20100155095
    Abstract: It is an object of the invention to provide an effective technique for reducing adverse effect of a dust suction device on the operability of a power tool, in the power tool which can suck dust generated during operation. The power tool has a motor 111 and a tool body 103 that houses the motor 111. A tool bit 119 is coupled to a tip end region of the tool body and driven by the motor 111 to perform a predetermined operation. The power tool further includes a dust suction part 151 through which dust generated during operation by the tool bit 119 is sucked and which covers at least a tip end of the tool bit 119, a dust transfer passage 153 through which the dust sucked into the dust suction part 151 is transferred and which is partly disposed within the tool body 103, and a dust discharge port 174 through which the dust transferred through the dust transfer passage 153 is discharged to the outside. Further, the dust discharge port 174 is disposed on the opposite side of the motor 111 from the tool bit 119.
    Type: Application
    Filed: December 10, 2009
    Publication date: June 24, 2010
    Applicant: MAKITA CORPORATION
    Inventors: Masanori Furusawa, Yoshihiro Kasuya, Hajime Takeuchi
  • Patent number: 7740086
    Abstract: A suction device (11) for a hammer drill (6) has a first end (12) with a securing device (14) for securing the suction device (11) to the hammer drill (6) and a second end (13) opposite first end (12) and which has a contact area (15) with which the suction device (11) contacts a constructional component, the suction device (11) further having a receiving space (20) which at least partially encloses a working tool (7) of the pick power tool (6), and being provided with a connection device (18) for a vacuum source. A retaining element (21) having a through-opening (22) for the working tool (7) and a plurality of suction openings (23) is provided in an area (19) of the second end (13).
    Type: Grant
    Filed: May 3, 2007
    Date of Patent: June 22, 2010
    Assignee: Hilti Aktiengesellschaft
    Inventors: Jochen Bleicher, Oliver Ohlendorf
  • Patent number: 7425109
    Abstract: A suction device for a power tool, in particular for a drilling and/or chipping tool, has at least one dust container and at least one suction head to be placed on a workpiece, wherein the dust container is integrated in the suction head.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: September 16, 2008
    Assignee: Robert Bosch GmbH
    Inventors: Robert Simm, Jan Peter Houben, Ruben Jan Moerbeek
  • Patent number: 7419341
    Abstract: The present invention relates to a device for machining mechanical parts by means of a hollow cylindrical tool presenting a distal end with a free edge that is shaped to perform machining when said tool is rotated about its axis.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: September 2, 2008
    Assignee: Romer
    Inventor: Romain Granger
  • Publication number: 20080169114
    Abstract: A portable power tool having a turbine unit (10a, 10b) is proposed, which is intended to be driven by a suction air flow (12a; 12b), and having a gearing unit (14a; 14b; 14c) via which the turbine unit (10a, 10b) is coupled to an output unit (16a; 16b; 16c).
    Type: Application
    Filed: November 16, 2006
    Publication date: July 17, 2008
    Inventors: Steffen Wuensch, Steffen Tiede
  • Patent number: 7371034
    Abstract: A drilling attachment for use in wet and dry drilling operations includes a housing having first and second fluid conduits, and a drive shaft mounted within the housing and having fluid transmitting first and second end portions in fluid communication with a respective first and second fluid conduit. In one embodiment, at any time one end of the drive shaft is coupled to a drive unit and the other end of the drive shaft is coupled to a core drill bit. In a dry drilling operation, dust is extracted from the core of the drill bit, is passed through the drive shaft and exits the housing via one of the fluid conduits. In a wet drilling operation, fluid such as water is passed through the other of the fluid conduits, through the drive shaft and into the core of the drill bit.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: May 13, 2008
    Inventor: John Clark
  • Patent number: 7354226
    Abstract: A hand-held power tool (2) connectable with a dust suction module (32) includes a motor (64) and an air flow generator (66) which for cooling the motor (64) is located, together with the motor (64), in air flow path (62) between an air inlet and an air outlet (16) both formed in the tool housing, (4, 6), with an air inlet having a side opening (18) and a connection opening (20) connectable with the suction path (60) of the dust suction module (32) and the dust suction module (32) having a suction conduit (58) for connecting the suction path (60) with the air flow path (62) and adjoining the connection opening (20) in a connected condition of the dust suction module (32) with the power tool, and with the power tool (2) further having a closing member provided on the connection opening (20), operable by the dust suction module (32), and having, in an attached position of the dust section module (32), an open position, and having a closed position in the detached condition of the dust suction module (32).
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: April 8, 2008
    Assignee: Hilti Aktiengesellschaft
    Inventor: Rory Britz
  • Patent number: 7322429
    Abstract: A portable drilling machine includes a housing; a drill chuck positioned on a front surface of the housing; a drill bit detachably coupled to the drill chuck; a driver positioned inside the housing to provide either the drill bit or the drill chuck with a rotational driving force; an anti-dust cover having a rear anti-dust cover formed in a cup shape with a drill through-hole formed in a central region of a bottom surface of the rear anti-dust cover and a front anti-dust cover formed in a tube shape to be coupled to the rear anti-dust cover, the front anti-dust cover being adapted to move towards the bottom surface of the rear anti-dust cover when acted on by pressure towards the housing and return to original position when the pressure is removed; and a retainer for detachably coupling the rear anti-dust cover to an outer surface of either the housing or the drill chuck. The rotational motion of the drill bit is not interfered with by the anti-dust cover, and the dust collection space is increased.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: January 29, 2008
    Inventor: Jong Oh Kim
  • Patent number: 7182150
    Abstract: An accessory system, such as a dust collection system (40) of a hand held power tool, such as a drilling and/or hammering tool comprising, the tool, an accessory unit (40) comprising a separate motor for powering the unit and releasably mountable on the tool, and a battery pack (4). When the accessory unit is not required, the battery pack can be mounted directly on the tool for powering to tool and when the accessory unit is required the battery pack can be mounted on the accessory unit for powering the accessory unit and, when the accessory unit is mounted on the tool, for powering the tool via the accessory unit.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: February 27, 2007
    Assignee: Black & Decker Inc.
    Inventor: Horst Grossman
  • Patent number: 7017680
    Abstract: An electrically powered tool having a dust collection unit powered by a motor, which unit can be releasably fitted to the tool includes a plug arrangement and a cooperating socket arrangement, one of which is formed on the tool and the other of which is formed on the unit. A first mechanical fixing arrangement is provided comprising a first projection and a first cooperating recess, one of which is formed on the tool and the other of which is formed on the unit. A second mechanical fixing arrangement is provided and comprises a manually actuable releasable latch arrangement and a second cooperating recess, one of which is formed on the tool and the other of which is formed on the unit. The first and second mechanical fixing arrangements cooperate to secure the dust collection unit to the tool in such a way that the plug and socket arrangements form an electrical connection.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: March 28, 2006
    Assignee: Black & Decker Inc.
    Inventors: Klaus-Dieter Arich, Thomas Stanke, Ernst Staas, Ralf Bernhart, Rosi Wache, legal representative, Robert Wache, deceased
  • Patent number: 6848749
    Abstract: It is suggested to machine contaminated surfaces, in particular radioactively contaminated concrete surfaces and masonry with pneumatically actuated striking tools. It has been shown that this is an extremely low-dust machining method with which the essentially the particles are struck off in the size order of 0.2 to 2.0 mm. The method may be realized with a device (1) with which in a housing (2) several chambers are arranged over one another. Most preferred at the top a pressurized air feed chamber (10) is fed via a pressurized air connection (3). Therebelow there is located a pressurized air suction chamber (12) which comprises a suction connection (4). At the bottom there is arranged a collecting chamber in which chisel-like hammer bolts (51) are effective. The hammer bolts which are part of the striking tools (5) project out of the housing (2).
    Type: Grant
    Filed: February 7, 2002
    Date of Patent: February 1, 2005
    Assignee: Sina Industrieservice GmbH & Co. KG
    Inventor: René Amherd