Patents by Inventor Long-Chang Jan

Long-Chang Jan 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: 11833602
    Abstract: An edge band fine trimming mechanism of an edge banding machine includes a fixed seat, and a lateral feeler wheel, a top feeler wheel set and a scraper, which are disposed on the fixed seat. The lateral feeler wheel is rotatably disposed on the fixed seat. The top feeler wheel set includes a fixing member adjustably disposed on the fixed seat, and first and second top feeler wheels disposed separately, both rotatably disposed on the fixing member and located at a same predetermined height. The scraper is located between the lateral feeler wheel and the top feeler wheel set for trimming an edge of an edge band of a workpiece. Even though the workpiece has a hole, the scraper is positionally maintainable by the top feeler wheel set, that effectively reduces appearance defects of the end edge of the edge band caused in the edge trimming process.
    Type: Grant
    Filed: August 4, 2022
    Date of Patent: December 5, 2023
    Assignee: OAV EQUIPMENT AND TOOLS, INC.
    Inventor: Long-Chang Jan
  • Patent number: 11660631
    Abstract: A glue applying mechanism of an edge banding machine includes a base, a glue applying unit and a glue quantity regulator. The base includes a glue tub. The glue applying unit is rotatably disposed on the glue tub of the base and includes a glue shaft and an obliquely glue applying member connected with the glue shaft. The glue quantity regulator is rotatably disposed on the base and includes a rotatable shaft, and a regulating plate and a blocking plate, which are connected with the rotatable shaft. The regulating plate is rotatable along with the rotatable shaft to cause edges of the regulating plate adjacent to the glue applying unit at the same time. The blocking plate is fixed to the rotatable shaft separately from the regulating plate. The above-described configuration of the glue applying mechanism is effective in controlling the applied glue quantity in thickness.
    Type: Grant
    Filed: May 5, 2021
    Date of Patent: May 30, 2023
    Assignee: OAV EQUIPMENT AND TOOLS, INC.
    Inventor: Long-Chang Jan
  • Patent number: 11541415
    Abstract: A glue applying mechanism of an edge banding machine for applying glue to an oblique surface and a vertical surface of a workpiece includes a base including a glue tub, and a glue applying unit rotatably disposed on the glue tub and including a glue shaft and an obliquely glue applying member connected to the top end of the glue shaft and having a glue applying surface which is a tapered surface with a wide top and a narrow bottom. At least the partial top of the glue shaft and the glue applying surface are exposed outside the glue tub. The glue applying unit is rotatable to extract the glue in the glue tub to the outer surface of the glue shaft and the glue applying surface, enabling the glue to be applied to the oblique and vertical surfaces of the workpiece simultaneously by only one glue applying mechanism.
    Type: Grant
    Filed: May 26, 2021
    Date of Patent: January 3, 2023
    Assignee: OAV EQUIPMENT AND TOOLS, INC.
    Inventor: Long-Chang Jan
  • Publication number: 20220379336
    Abstract: A glue applying mechanism of an edge banding machine for applying glue to an oblique surface and a vertical surface of a workpiece includes a base including a glue tub, and a glue applying unit rotatably disposed on the glue tub and including a glue shaft and an obliquely glue applying member connected to the top end of the glue shaft and having a glue applying surface which is a tapered surface with a wide top and a narrow bottom. At least the partial top of the glue shaft and the glue applying surface are exposed outside the glue tub. The glue applying unit is rotatable to extract the glue in the glue tub to the outer surface of the glue shaft and the glue applying surface, enabling the glue to be applied to the oblique and vertical surfaces of the workpiece simultaneously by only one glue applying mechanism.
    Type: Application
    Filed: May 26, 2021
    Publication date: December 1, 2022
    Inventor: LONG-CHANG JAN
  • Publication number: 20220355332
    Abstract: A glue applying mechanism of an edge banding machine includes a base, a glue applying unit and a glue quantity regulator. The base includes a glue tub. The glue applying unit is rotatably disposed on the glue tub of the base and includes a glue shaft and an obliquely glue applying member connected with the glue shaft. The glue quantity regulator is rotatably disposed on the base and includes a rotatable shaft, and a regulating plate and a blocking plate, which are connected with the rotatable shaft. The regulating plate is rotatable along with the rotatable shaft to cause edges of the regulating plate adjacent to the glue applying unit at the same time. The blocking plate is fixed to the rotatable shaft separately from the regulating plate. The above-described configuration of the glue applying mechanism is effective in controlling the applied glue quantity in thickness.
    Type: Application
    Filed: May 5, 2021
    Publication date: November 10, 2022
    Inventor: LONG-CHANG JAN
  • Patent number: 11247361
    Abstract: An adjustable trimming mechanism includes a wheel module having a wheel mount and a wheel disposed on the wheel mount, and a motor module having a motor mount, a slide rail disposed on a side of the motor mount, a motor, a slider disposed on the slide rail and connected with the motor, a pull rod and a positioning member threadedly disposed on the slide rail. One of the motor and wheel mounts is located above the other. An end of the slider is connected with the pull rod so that the slider drives the motor to displace together frontward or backward when being pulled by the pull rod. Therefore, when the positioning member is loosened, the position of the motor is adjustable frontward or backward by the cooperation of the pull rod and the slider and thereby the cutter installed on the motor is adjusted simultaneously.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: February 15, 2022
    Assignee: OAV EQUIPMENT AND TOOLS, INC.
    Inventor: Long-Chang Jan
  • Publication number: 20210146567
    Abstract: An adjustable trimming mechanism includes a wheel module having a wheel mount and a wheel disposed on the wheel mount, and a motor module having a motor mount, a slide rail disposed on a side of the motor mount, a motor, a slider disposed on the slide rail and connected with the motor, a pull rod and a positioning member threadedly disposed on the slide rail. One of the motor and wheel mounts is located above the other. An end of the slider is connected with the pull rod so that the slider drives the motor to displace together frontward or backward when being pulled by the pull rod. Therefore, when the positioning member is loosened, the position of the motor is adjustable frontward or backward by the cooperation of the pull rod and the slider and thereby the cutter installed on the motor is adjusted simultaneously.
    Type: Application
    Filed: November 19, 2019
    Publication date: May 20, 2021
    Inventor: LONG-CHANG JAN
  • Patent number: 10518435
    Abstract: A feeding system with numerically adjustable pneumatic cylinder speeds includes: a frame; an X-axis pneumatic cylinder; a Z-axis pneumatic cylinder; a feeding table connected to the pneumatic cylinders in order to be driven into motion in the X- and Z-axis directions; an X-axis detection module; a Z-axis detection module; a microcomputer; and a display screen electrically connected to the microcomputer. The microcomputer uses each detection module to determine the time interval between the instant at which the piston rod of the corresponding pneumatic cylinder passes the corresponding starting point and a subsequent instant at which the same piston rod passes the corresponding endpoint. The time intervals thus determined are defined as a duration of X-axis forward movement and a duration of Z-axis forward movement respectively. Both durations are displayed on the display screen.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: December 31, 2019
    Assignee: OAV EQUIPMENT AND TOOLS, INC.
    Inventors: Hsuan-Chu Liu, Long-Chang Jan
  • Publication number: 20180370067
    Abstract: A feeding system with numerically adjustable pneumatic cylinder speeds includes: a frame; an X-axis pneumatic cylinder; a Z-axis pneumatic cylinder; a feeding table connected to the pneumatic cylinders in order to be driven into motion in the X- and Z-axis directions; an X-axis detection module; a Z-axis detection module; a microcomputer; and a display screen electrically connected to the microcomputer. The microcomputer uses each detection module to determine the time interval between the instant at which the piston rod of the corresponding pneumatic cylinder passes the corresponding starting point and a subsequent instant at which the same piston rod passes the corresponding endpoint. The time intervals thus determined are defined as a duration of X-axis forward movement and a duration of Z-axis forward movement respectively. Both durations are displayed on the display screen.
    Type: Application
    Filed: August 9, 2017
    Publication date: December 27, 2018
    Inventors: Hsuan-Chu LIU, Long-Chang JAN
  • Patent number: 10124536
    Abstract: An edge banding machine having a platform, a glue applicator and, an edge band transmission mechanism for affixing an edge band to a workpiece is disclosed. The glue applicator is mounted at the platform, including a glue-applying shaft. The edge band transmission mechanism is mounted at the platform adjacent to the glue applicator, including an edge band transferring shaft disposed in parallel to the glue-applying shaft and a motor connected with the edge band transferring shaft for driving the edge band transferring shaft to rotate. The edge band transferring shaft is connected with the glue-applying shaft so that the edge band transferring shaft and the glue-applying shaft can be synchronously rotated.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: November 13, 2018
    Assignee: Oav Equipment & Tools, Inc.
    Inventor: Long-Chang Jan
  • Patent number: 9486933
    Abstract: An emergency stop device for a band saw includes a brake member moveable between a standby position and an active position where the brake member firmly urges and stops a running wheel of the band saw, around which a band saw blade is looped. The brake member is held by a retainer at the standby position when the emergency stop device is inactive. When the emergency stop device is started, the retainer is separated apart from the brake member for enabling the brake member to move by an actuation of a spring member from the standby position to the active position so as to stop the cutting motion of the band saw blade.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: November 8, 2016
    Assignee: OAV EQUIPMENT & TOOLS, INC.
    Inventors: Long-Chang Jan, Hsuan-Chu Liu
  • Publication number: 20110167974
    Abstract: An emergency stop device for a band saw includes a brake member moveable between a standby position and an active position where the brake member firmly urges and stops a running wheel of the band saw, around which a band saw blade is looped. The brake member is held by a retainer at the standby position when the emergency stop device is inactive. When the emergency stop device is started, the retainer is separated apart from the brake member for enabling the brake member to move by an actuation of a spring member from the standby position to the active position so as to stop the cutting motion of the band saw blade.
    Type: Application
    Filed: January 12, 2010
    Publication date: July 14, 2011
    Applicant: OAV EQUIPMENT & TOOLS, INC.
    Inventors: Long-Chang Jan, Hsuan-Chu Liu
  • Publication number: 20100282039
    Abstract: A spreader assembly includes a spreader having a notch and two opposite indentations at a periphery of the notch, a holder, on which an anti-kickback pawl device is mounted, having a groove for insertion of the spreader, and a controller rotatably mounted to the holder and rotatable relative to the holder between a first position where two block portions of the controller are engaged with the indentations of the spreader for mounting the holder to the spreader, and a second position where the block portions of the controller are disengaged from the indentations of the spreader for allowing detachment of the holder from the spreader.
    Type: Application
    Filed: June 24, 2009
    Publication date: November 11, 2010
    Applicant: OAV EQUIPMENT & TOOLS, INC.
    Inventor: Long-Chang JAN
  • Publication number: 20100206151
    Abstract: A quick-detachable saw blade guard assembly used in a circular saw to guard a saw blade is disclosed to include a spreader having a first locating notch and a second locating notch that defines an opening, a support bar having a bar member and a pivot transversely fastened to one end of the bar member and detachably movably coupled to the first locating notch of the spreader, a saw blade guard mounted on the support bar for guarding the spreader and the saw blade, a locking device having a locking plate movable relative to the bar member and a pin fastened to the locking plate and movable in and out of the second locating notch through the opening, and a control device having an adjustment member mounted on the bar member for engaging the locking plate to hold the pin of the locking device in the second locating notch of the spreader.
    Type: Application
    Filed: March 25, 2009
    Publication date: August 19, 2010
    Applicant: OAV EQUIPMENT & TOOLS, INC.
    Inventor: Long-Chang Jan
  • Publication number: 20100206153
    Abstract: For use in a saw machine to hold a spreader, a spreader mounting structure is disclosed to include a spreader holder, which has a holder base for fastening to the saw machine, a front bearing wall for bearing an insertion portion of the spreader, a first receiving portion, a holding down device having a shank with a bearing portion insertable through the insertion portion of the spreader into the first receiving portion of the spreader holder and a holding down plate, a control member having an operating portion and an actuation portion movable by the operating portion relative to the bearing portion of the shank of the holding down device to move the holding down plate between a locking position where the holding down plate holds down the insertion portion of the spreader on the front bearing wall of the spreader holder and an unlocking position where the holding down plate is released from the insertion portion of the spreader.
    Type: Application
    Filed: March 31, 2009
    Publication date: August 19, 2010
    Applicant: OAV EQUIPMENT 7 TOOLS, INC.
    Inventor: Long-Chang JAN
  • Publication number: 20090178525
    Abstract: Installed in a band saw formed of a frequency converter, a motor, a driving wheel set and a band saw blade, a cutting speed display device is disclosed to include a modulator electrically connected to the frequency converter to output a linear modulation signal to the frequency converter for modulating the frequency of the output electrical power of the frequency converter so as to regulate the speed of the motor, and a display device that has a circuit device electrically connected to the modulator for receiving the linear modulation signal outputted by the modulator and converting the received linear modulation signal into a band saw blade cutting speed subject to one of a number of calculation modules set therein for enabling the band saw blade cutting speed to be displayed on the display panel. Thus, the cutting speed display device indicates the cutting speed of the band saw blade of the band saw in real time, and eliminates the problem of floating of the displayed data.
    Type: Application
    Filed: May 27, 2008
    Publication date: July 16, 2009
    Applicant: OAV Equipment & Tools, Inc.
    Inventors: Long-Chang JAN, Hsuan-Chu Liu
  • Publication number: 20070289424
    Abstract: A workpiece-holding device for holding a workpiece on a worktable of a band saw machine having a vertically moveable saw blade guide and a saw blade running through the worktable and the vertically moveable saw blade guide is disclosed. The workpiece-holding device includes a suspension arm for horizontally and axially moveably mounting to the vertically moveable saw blade guide of the band saw machine, an offset member having an end horizontally and perpendicularly connected to the suspension arm, and a holding pin vertically and perpendicularly connected to the other end of the offset member for stopping at a workpiece on the worktable such that the workpiece is rotatable about the holding pin on the worktable for enabling the workpiece to be cut into an arched or circular shape by the saw blade.
    Type: Application
    Filed: June 20, 2006
    Publication date: December 20, 2007
    Applicant: OAV Equipment & Tools, Inc.
    Inventor: Long-Chang Jan