Patents by Inventor Bor Yann Chuang

Bor Yann Chuang 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: 7392830
    Abstract: An adjustable stop plank for a power tool includes a drive mechanism connected to the stop plank for continuous adjustment of the angle of the stop plank with respect to the work surface and has a display for indicating the current angle of the stop plank. In one form, the micro-adjusting device for the stop plank of a power tool includes a hand wheel unit provided on the holding frame operable to continuously adjust the angle of the stop plank. The power tool may include indicia to indicate a plurality of angles for the stop plank and an index for indicating on the indicia the current angle of the stop plank.
    Type: Grant
    Filed: September 8, 2003
    Date of Patent: July 1, 2008
    Assignee: WMH Tool Group, Inc.
    Inventors: Xun Lei, Bor Yann Chuang
  • Publication number: 20080092710
    Abstract: A locking device for a rotary wheel of a table saw includes a rotary shaft and a rotary wheel connected with a rear end of the rotary shaft. The shaft has a threaded end at its utmost rear end and a pivotally fitting section connected with the threaded end. A squeezing sleeve engaged with the rotary shaft is installed outside the table saw. The rotary wheel has a fixing hole for fixing with the pivotally fitting section, and a positioning knob located outside the rotary shaft for screwing with the threaded end so as to move axially to push the rotary wheel to squeeze the squeezing sleeve to keep the rotary wheel positioned immovably.
    Type: Application
    Filed: October 20, 2006
    Publication date: April 24, 2008
    Inventor: Bor-Yann Chuang
  • Publication number: 20080087355
    Abstract: An adjusting device for the conveying belt of a planer includes a fundamental plate assembled on the base of a planer. The fundamental plate has its rear end disposed with a rear roller unit connected with the base of the planer and composed of two adjusting plates and a rear roller. The two adjusting plates are respectively bored with longitudinal insert slots preset in number to enable the adjusting plates to be slidably assembled on the fundamental plate. Each adjusting plate has its front end extending outward vertically and forming a positioning wall pivotally fixed thereon with a positioning member and movably fastened on the base of the planer. The adjusting device for the conveying belt of this invention is simple in structure and easy to be assembled, lowering processing and assembling cost.
    Type: Application
    Filed: October 13, 2006
    Publication date: April 17, 2008
    Inventor: Bor-Yann Chuang
  • Publication number: 20080083313
    Abstract: A circular-saw elevating and lowering device for a table saw includes a main rod, a worm and a moving up-and-down block. The main rod is pivotally connected in a saw base pivotally connected in a base of the table saw, and a main bevel gear fixed on an end of the main rod. The worm has one end pivotally connected to the saw base, and the other end fixed with a subordinate bevel gear engaging with the main bevel gear. Further, the moving up-and-down block is threadably combined with the worm, which has its upper end fixed with a separating plate and its front end fixed with a circular saw unit. When the main rod is rotated, both the circular saw unit and the separating plate can be moved up or down synchronously, with the gap between the saw unit and the separating unit always kept the same.
    Type: Application
    Filed: September 11, 2006
    Publication date: April 10, 2008
    Inventor: Bor-Yann Chuang
  • Publication number: 20080072998
    Abstract: An adjusting and shifting device for a motor base of a planer includes a shifting device fixed on an adjust base of a planer and consisting of a fix base and a rotary base. The fix base is fixed on the adjust base, and a gear unit pivotally connected in the adjust base and pivotally connected to the bottom of the rotary base via an interactive rod. The rotary base is provided with a shaft at a front side of the bottom. The interactive rod moves the adjust base to swing with the shaft as a pivot, so the motor pivotally connected on the rotary base may swing for a preset angle to move farther from the adjust base.
    Type: Application
    Filed: September 25, 2006
    Publication date: March 27, 2008
    Inventor: Bor-Yann Chuang
  • Publication number: 20080063485
    Abstract: A quick elevating and micro-adjusting device for the worktable of a manual planer includes a base, a stationary worktable, a movable worktable and an adjustment device. The adjustment device has its support shaft inserted in the fixing holes of two side plates of the movable worktable. The adjustment device has an elevating rod to be moved up or down for actuating the support shaft to quickly move the movable worktable upward or downward. A micro-adjusting rod has its worm engaged with the worm gear of a threaded shaft for rotating together to drive the threaded rod of the threaded shaft to rotate and move the holding frame of the threaded shaft, which is secured on the movable worktable. Thus, by turning the micro-adjusting rod, the movable worktable can be micro-adjusted in position. Thus the worktable can be adjusted quickly and precisely.
    Type: Application
    Filed: September 11, 2006
    Publication date: March 13, 2008
    Inventor: Bor-Yann Chuang
  • Publication number: 20080063484
    Abstract: A non-step speed changer for a plane shaft of a manual planer includes an adjust base and a speed-changing cam unit. A motor is fixed on the adjusting base, which can adjust the level of the spindle of the motor. The speed changing cam unit is pivotally connected on the spindle, and a transmitting belt is mounted around the speed changing cam unit and also around the plane shaft of a manual planer. The rotating radius of the transmitting belt around the speed changing cam unit is altered in accordance to lifting up and lowering down of the spindle, so the level of the spindle of the motor is altered, and the planing speed of the plane shaft is altered in the same way, able to enhance the quality of a work finished.
    Type: Application
    Filed: September 11, 2006
    Publication date: March 13, 2008
    Inventor: Bor-Yann Chuang
  • Publication number: 20080060721
    Abstract: A tool-shaft locking device for a planing machine is connected with a second end of the tool shaft having a first end connected with a belt wheel, including a bearing base, a locking rod, a spring and a locking button. The bearing base has a sidewise hole, two opposite deep position grooves at an upper and a lower side of the hole and two opposite shallow grooves at a right and a left side, and the locking rod has a first threaded end tightly engaging a center threaded hole of the locking button, which has two opposite position projections possible to be fitted tightly in the deep grooves so that the inner end of the locking rod may insert in one of position holes of the tool shaft body so as to lock the tool shaft immovable. Then a planing knife fixed on the tool shaft with bolts can be adjusted in its position, conveniently by easily screwing off the bolts.
    Type: Application
    Filed: September 11, 2006
    Publication date: March 13, 2008
    Inventor: Bor-Yann Chuang
  • Publication number: 20080047409
    Abstract: A quickly collapsible protective cover unit for a table sawing machine includes two protective covers, two connecting rods, an elongate base and a dividing plate. The dividing plate has its upper end combined between two lengthwise sides of one end portion of the base, provided with plural slots for a fitting rod of plural fixing blocks located at one end portion of the base to fit therein. The slots respectively have a stop edge for retaining the fitting rod therein, not to loosen out of the slots when the fitting rods are pushed in the slots. Then the compress bolt and the fitting rods can tightly force the base and the dividing plate combined with each other. So the protective cover unit can be assembled or collapsed quickly, without using any tool, by handling the compress bolt.
    Type: Application
    Filed: August 25, 2006
    Publication date: February 28, 2008
    Inventor: Bor-Yann Chuang
  • Publication number: 20080051236
    Abstract: A stepless transmission for a flat planer has a driving shaft connected with a motor and fitted with a driving cam member inside the stepless transmission, able to keep its wheelbase altered. The driving cam member is pivotally connected with a driven pulley set by means of a driving belt. The driven pulley set is correspondingly provided with a driven cam member having an adjustable wheelbase. The driving cam member can be driven by a jaw of a hand rod to keep the wheelbase of the driving cam member altered, so as to control a conveying speed of an input roller.
    Type: Application
    Filed: August 25, 2006
    Publication date: February 28, 2008
    Inventor: Bor-Yann Chuang
  • Publication number: 20080047410
    Abstract: A quickly collapsible dividing plate unit for a table sawing machine includes a dividing plate, a fixing base, a hexagonal bolt and a spanner unit. The hexagonal bolt has a head, a fitting projection on the head and a threaded hole in the center of the fitting projection. The spanner unit is composed of a spanner and a screw, and the spanner has a fitting hole in a front end to fit around the fitting projection of the hexagonal bolt, with the screw passing the fitting hole and engaging with the threaded hole so the spanner may be threadably combined with the hexagonal bolt. Then the spanner is handled to fix or loosen quickly the hexagonal bolt so that the dividing plate base unit may quickly be assembled or collapsed.
    Type: Application
    Filed: August 25, 2006
    Publication date: February 28, 2008
    Inventor: Bor-Yann Chuang
  • Patent number: 7328732
    Abstract: A swiftly and minutely adjusting device for a wood-planer working table includes a bottom base, a stationary working table, a movable working table, a linking rod unit, an adjusting device, a guide plate and a tightening grip. The movable working table is slidably combined on the bottom base. The adjusting device and the linking rod unit are pivotally connected to a support shaft to permit the adjusting device move the linking rod unit for swiftly adjusting the height of the movable working table. A worm gear is attached on the support shaft, and the adjusting device has a worm shaft and a bevel gear unit for adjusting minutely the support shaft, so the movable working table of a wood planer can be adjusted minutely as well.
    Type: Grant
    Filed: October 7, 2005
    Date of Patent: February 12, 2008
    Inventor: Bor-Yann Chuang
  • Publication number: 20080006133
    Abstract: A saw blade disassembling device for a table saw includes a saw base and a work table. The saw base consists of a main shaft holder, a main shaft and a saw blade. The main shaft is pivotally positioned in the main shaft holder, and the saw blade is fixed at the front end of the main shaft. The main shaft has its outer circumference equidistantly bored with plural locking holes. The worktable has its upper side bored with a positioning groove corresponding to the locking hole of the main shaft. The positioning groove is fitted with a locking pivot extending downward to form a positioning rod, which can be actuated to move up and down axially in the positioning groove and be inserted in one of the locking holes of the main shaft to fix the main shaft in position for facilitating disassembling of the saw blade.
    Type: Application
    Filed: July 5, 2006
    Publication date: January 10, 2008
    Inventor: Bor-Yann Chuang
  • Patent number: 7308845
    Abstract: A sawing angle indicating-and-reading device for a table sawing machine includes a saw base, a driving connecting rod and an angle sensing device. The driving connecting rod is actuated to drive the saw base to shift bias for an angle. The angle sensing device is composed of an angular signal reading head and a circuit device. The angular signal reading head is firmly fitted on the inner end of the driving connecting rod to rotate together with the driving connecting rod for producing an angle increasing or decreasing signal and putting it out to the circuit device and simultaneously, the circuit device will put out a digital angular value. By so designing, the sawing angles of the table sawing machine can easily and accurately be read, able to elevate precision in sawing.
    Type: Grant
    Filed: October 7, 2005
    Date of Patent: December 18, 2007
    Inventor: Bor-Yann Chuang
  • Patent number: 7293490
    Abstract: A sawing angle indicating device for a table sawing machine includes an angle sensing device composed of a sensing disk, a sensor unit and a circuit device. The sensing disk is firmly fitted on a driving connecting rod to rotate together for putting out signals to the sensor unit. Subsequently, the signals received by the sensor unit are put into the circuit device to be compared and checked to obtain an advancing or retreating datum, and then the signal is put out to the digital indicator on the circuit device. By so designing, the sawing angles of the table sawing machine can be read easily and accurately, able to elevate precision in processing.
    Type: Grant
    Filed: October 7, 2005
    Date of Patent: November 13, 2007
    Inventor: Bor-Yann Chuang
  • Publication number: 20070245870
    Abstract: A swiftly adjusting device for a blade shaft of a planer includes a blade shaft movably positioned in a blade opening of a worktable superposed on a machine body. The machine body has an adjusting hollow space formed in a front portion, and the adjusting hollow space has an adjusting member pivotally connected with a center portion and movable up and down. The blade shaft has an adjusting bearing support pivotally connected to a front end and received in the adjusting hollow space. The bottom of the adjusting bearing support contacts the upper end of the adjusting member so that the blade shaft can be minutely and swiftly adjusted in its level to the worktable by adjusting the adjusting member in a minute way.
    Type: Application
    Filed: April 25, 2006
    Publication date: October 25, 2007
    Inventor: Bor-Yann Chuang
  • Patent number: 7278646
    Abstract: A movable table stand is mainly composed of a platform, a first foot frame, a second foot frame and a joint member. The platform has an upper surface for a table saw to be mounted thereon and provided with a sliding groove at its two lengthwise sides respectively. A locking member is set at a front end of each sliding groove. The first foot frame is fixed pivotally with a supporting shaft having a sliding pivot at its two sides respectively for sliding along the sliding groove of the platform. The second foot frame is provided with a fixing bolt at its two sides respectively able to insert coordinately into the joint member. The joint member is fixed on the first foot frame and connected pivotally with the platform and the second foot frame.
    Type: Grant
    Filed: October 7, 2005
    Date of Patent: October 9, 2007
    Inventor: Bor-Yann Chuang
  • Patent number: 7252124
    Abstract: A work feeding and conveying device for a planing machine includes a conveying unit assembled on an intermediate base of a planing machine. The conveying unit has a power source, a front shaft, a rear shaft and a conveying belt. The front shaft is secured at the front end of the intermediate base and connected with a power source for being rotated. The rear shaft is pivotally connected with the rear end of the intermediate base, able to be moved back and forth horizontally for a present distance. The conveying belt formed with a rough surface with high friction coefficient is fitted around the intermediate base and passes on the front and the rear shaft. The conveying belt can smoothly convey a work piece, and evenly apply force on its surface, able to carry out wood processing precisely.
    Type: Grant
    Filed: March 20, 2006
    Date of Patent: August 7, 2007
    Inventor: Bor-Yann Chuang
  • Patent number: 7246977
    Abstract: An indicating device with large graduations for a plane is installed at a combining section of a main base and a worktable of the plane, including a graduation ruler, a pointer and a rack. The graduation ruler formed as an arc is provided with graduations with number figures for readings. The upper end portion of the pointer faces exactly to the graduation ruler for pointing to one of the graduations. The pointer has gear teeth in its lower round edge for engaging with gear teeth located on one side of the rack. Therefore, a displacement the worktable moves relative to the main base can be clearly and easily read from the graduations of the graduation ruler.
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: July 24, 2007
    Inventor: Bor-Yann Chuang
  • Publication number: 20070095184
    Abstract: A positioning device for the work-piece backing plate of a table sawing machine includes a machine seat, a work-piece backing plate and a position-limiting device. The work-piece backing plate has its opposite sides respectively fixed with a rack engaged with a gear set installed in the interior of the machine seat. The work-piece backing plate can be controlled by the gear set to move forward and backward on the machine seat. The position-limiting device is assembled in the interior of the machine seat for restricting and fixing the work-piece backing plate in position to prevent the work-piece backing plate from shifting bias in the course of processing, able to elevate processing precision.
    Type: Application
    Filed: November 2, 2005
    Publication date: May 3, 2007
    Inventor: Bor-Yann Chuang