Patents by Inventor Mohsein Wan

Mohsein Wan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9718173
    Abstract: In a handheld machine tool having a tool holding fixture, which has a multi-faced inner receptacle and a multi-faced outer receptacle, the multi-faced inner receptacle being configured for the connection to a first tool insert, which is able to be locked in the multi-faced inner receptacle using a locking device assigned to the tool holding fixture, and the multi-faced outer receptacle being configured for the connection to a second tool insert, which has an inner multi-faced coupling that is able to be slid onto the multi-faced outer receptacle. The locking device has an actuating element, which is rotatable about a longitudinal axis of the tool holding fixture for unlocking the first tool insert from a specified locking position into a specified unlocking position.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: August 1, 2017
    Assignee: Robert Bosch GMBH
    Inventors: Chun How Low, Chun Chee Loh, Mohsein Wan, Siew Yuen Lee
  • Patent number: 9114514
    Abstract: A rotary power tool operable in either an impact mode or a drill mode comprising a driveshaft (10), an output shaft (32), a hammer (18) coupled to the driveshaft (10) for transmitting torque to the output shaft (32), and a blocking member (40, 74) which is in a first position wherein it blocks the hammer (18) from moving axially along the rotational axis (37) of the tool when the power tool operates in the drill mode and is in a second position wherein it allows the hammer (18) to move axially along the rotational axis (37) of the tool when the power tool operates in the impact mode, wherein the blocking member (40, 74) is supported by the driveshaft (10).
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: August 25, 2015
    Assignee: ROBERT BOSCH GMBH
    Inventors: Chi Hoe Leong, Mohsein Wan, Siew Yuen Lee, Manfred Lutz
  • Publication number: 20130199814
    Abstract: In the case of a handheld machine tool having a mechanical striking mechanism, which includes a striking body provided with at least one actuating cam and an output shaft provided with at least one output cam, the actuating cam being configured for percussively driving the output cam during percussive operation of the mechanical striking mechanism, a damping element, which has an abutment element acted upon by a spring element, is provided at least on one actuating cam and/or on one output cam.
    Type: Application
    Filed: June 27, 2011
    Publication date: August 8, 2013
    Inventors: Chuan Cheong Yew, Chun How Low, Chun Chee Loh, Chi Hoe Leong, Mohsein Wan, Siew Yuen Lee
  • Publication number: 20130154202
    Abstract: In a handheld machine tool having a tool holding fixture, which has a multi-faced inner receptacle and a multi-faced outer receptacle, the multi-faced inner receptacle being configured for the connection to a first tool insert, which is able to be locked in the multi-faced inner receptacle using a locking device assigned to the tool holding fixture, and the multi-faced outer receptacle being configured for the connection to a second tool insert, which has an inner multi-faced coupling that is able to be slid onto the multi-faced outer receptacle. The locking device has an actuating element, which is rotatable about a longitudinal axis of the tool holding fixture for unlocking the first tool insert from a specified locking position into a specified unlocking position.
    Type: Application
    Filed: May 18, 2011
    Publication date: June 20, 2013
    Applicant: Robert Bosch GMBH
    Inventors: Chun How Low, Chun Chee Loh, Mohsein Wan, Siew Yuen Lee
  • Patent number: 8397831
    Abstract: A rotary power tool according to the invention includes a manual ratchet mechanism having a driveshaft driven by a motor, an output shaft, a disengageable shaft coupling element for mechanically coupling the driveshaft to the output shaft, and a disengageable ratchet element for blocking rotation of the output shaft unidirectionally. The invention provides that one of the coupling element and the ratchet element is engaged, the other one is disengaged.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: March 19, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Mohsein Wan, Manfred Lutz, Romli Norrofaizi
  • Patent number: 8366122
    Abstract: A rotary tool has an output shaft having an axis of rotation and a distal neck portion which has at least three neck faces that do not intersect the axis of rotation, and a substantially U-shaped spring element having a base portion and two leg portions, wherein the spring element straddles the distal neck portion.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: February 5, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Siew Yuen Lee, Mohsein Wan, Chi Hoe Leong, Manfred Lutz
  • Patent number: 8163414
    Abstract: An electrical device has a device body defining a cavity for receiving a battery pack, the battery pack has an arm and a sleeve that at least partially surrounds the arm, and the sleeve is rotatable relative to the arm around an axis of rotation.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: April 24, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Mohsein Wan, Manfred Lutz, Rofaizi Nor
  • Publication number: 20110233878
    Abstract: In a hand-held power tool having a tool holder equipped with a multisided internal socket for connecting to a first insert bit and with a multisided external socket for connecting to a second insert bit, the tool holder being associated with a locking device for locking the first insert bit in the multisided internal socket, the locking device has an actuating element that it is possible to slide from a locking position into an unlocking position in an axial direction oriented away from the first insert tool in order to unlock the first insert tool.
    Type: Application
    Filed: February 25, 2011
    Publication date: September 29, 2011
    Inventors: Mohsein Wan, Chun How Low, Siew Yuen Lee, Chun Chee Loh
  • Publication number: 20100326686
    Abstract: A rotary power tool operable in either an impact mode or a drill mode comprising a driveshaft (10), an output shaft (32), a hammer (18) coupled to the driveshaft (10) for transmitting torque to the output shaft (32), and a blocking member (40, 74) which is in a first position wherein it blocks the hammer (18) from moving axially along the rotational axis (37) of the tool when the power tool operates in the drill mode and is in a second position wherein it allows the hammer (18) to move axially along the rotational axis (37) of the tool when the power tool operates in the impact mode, wherein the blocking member (40, 74) is supported by the driveshaft (10).
    Type: Application
    Filed: December 4, 2007
    Publication date: December 30, 2010
    Inventors: Chi Hoe Leong, Mohsein Wan, Siew Yuen Lee, Manfred Lutz
  • Publication number: 20100071922
    Abstract: A rotary power tool according to the invention includes a manual ratchet mechanism having a driveshaft driven by a motor, an output shaft, a disengageable shaft coupling element for mechanically coupling the driveshaft to the output shaft, and a disengageable ratchet element for blocking rotation of the output shaft unidirectionally. The invention provides that one of the coupling element and the ratchet element is engaged, the other one is disengaged.
    Type: Application
    Filed: June 22, 2009
    Publication date: March 25, 2010
    Inventors: Mohsein WAN, Manfred LUTZ, Romli NORROFAIZI
  • Publication number: 20090286145
    Abstract: An electrical device has a device body defining a cavity for receiving a battery pack, the battery pack has an arm and a sleeve that at least partially surrounds the arm, and the sleeve is rotatable relative to the arm around an axis of rotation.
    Type: Application
    Filed: January 21, 2009
    Publication date: November 19, 2009
    Inventors: Mohsein Wan, Manfred Lutz, Rofaizi Nor
  • Publication number: 20090079143
    Abstract: A rotary tool has an output shaft having an axis of rotation and a distal neck portion which has at least three neck faces that do not intersect the axis of rotation, and a substantially U-shaped spring element having a base portion and two leg portions, wherein the spring element straddles the distal neck portion.
    Type: Application
    Filed: September 23, 2008
    Publication date: March 26, 2009
    Inventors: Siew Yuen Lee, Mohsein Wan, Chi Hoe Leong, Manfred Lutz
  • Patent number: 7498526
    Abstract: A cordless screwdriver, having a housing (12, 18) with a pistol grip (14) with an ON/OFF button (26) and a rechargeable battery (40) inserted into it, in particular fixedly and with charging contact tongues (37) associated with the battery (40), is made safer and more convenient by providing that by means of the toggle switch (26), extending in elongated fashion over the inside of the pistol grip (14) and in particular pivotably supported, a plurality of power circuits of the cordless screwdriver (10) are interruptable and closable over the actuation stroke of the toggle switch successively independently of one another.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: March 3, 2009
    Assignee: Robert Bosch GmbH
    Inventors: Guenter Lohr, Heiko Roehm, Wolfgang Hirschburger, Sven Kageler, Mohsein Wan, Abdul Aziz Zulfikar, Sim Teik Yeoh, Joseph Siang Choon Lim
  • Publication number: 20070256847
    Abstract: A hand power tool has a housing comprising at least two housing parts, and at least one sealing and/or damping element introduced into the housing by injection molding.
    Type: Application
    Filed: February 2, 2007
    Publication date: November 8, 2007
    Inventors: Mohsein Wan, Manfred Lutz, Siew Yuen Lee