Patents by Inventor Po-Feng Huang

Po-Feng Huang 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: 8646672
    Abstract: A nail positioning member of a nail slot of a nail gun includes a magazine including a horizontal nail slot connected with a perforation for nailing; a nail pushing piece slidably assembled to the nail slot; a plurality of horizontal slot channels parallel to the nail slot; and a plurality of positioning pieces, respectively pivotally assembled to the slot channels to block the head of the nails. The positioning piece forms a protruding portion in a movement path of the nail pushing piece, to be pushed by the nail pushing piece and to drive the positioning piece to oscillate in the direction of the slot channel in order to open the nail slot for placing the nails.
    Type: Grant
    Filed: March 6, 2011
    Date of Patent: February 11, 2014
    Assignees: Depoan Pneumatic Corp., Robert Bosch Tool Corporation
    Inventors: I-Tsung Wu, Po-Feng Huang, Yi-Zhuo Zhang
  • Patent number: 8567654
    Abstract: A locking mechanism for a nail gun includes a side slot formed on a bottom side of a gun body and a nail supplying slot connected to a drive track of the nail gun. A stopper element is formed on a side of a slider element corresponding to the side slot. The gun also includes a magazine in which a nail pusher facing the nail supplying slot and a lockout element facing the side slot are formed. The nail pusher has an ear portion. The lockout element includes a pushing arm and a moveable guide slot capping with the ear portion to restrict the sliding movement of the lockout element on the nail pusher. As the pushing arm extends towards the corresponding end of the nail supplying slot, a nail is pushed into the drive track to shoot. The lockout element enters into the side slot to block the stopper element when the nail is exhausted, so as to enhance the shooting blocking effect of the nail gun.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: October 29, 2013
    Assignees: De Poan Pneumatic Corp., Robert Bosch Tool Corp.
    Inventors: I-Tsung Wu, Po-Feng Huang, Yi-Zhuo Zhang
  • Publication number: 20120187176
    Abstract: A nail positioning member of a nail slot of a nail gun includes a magazine including a horizontal nail slot connected with a perforation for nailing; a nail pushing piece slidably assembled to the nail slot; a plurality of horizontal slot channels parallel to the nail slot; and a plurality of positioning pieces, respectively pivotally assembled to the slot channels to block the head of the nails. The positioning piece forms a protruding portion in a movement path of the nail pushing piece, to be pushed by the nail pushing piece and to drive the positioning piece to oscillate in the direction of the slot channel in order to open the nail slot for placing the nails.
    Type: Application
    Filed: March 6, 2011
    Publication date: July 26, 2012
    Inventors: I-Tsung Wu, Po-Feng Huang, Yi-Zhuo Zhang
  • Publication number: 20120187175
    Abstract: A locking mechanism for a nail gun includes a side slot formed on a bottom side of a gun body and a nail supplying slot connected to a drive track of the nail gun. A stopper element is formed on a side of a slider element corresponding to the side slot. The gun also includes a magazine in which a nail pusher facing the nail supplying slot and a lockout element facing the side slot are formed. The nail pusher has an ear portion. The lockout element includes a pushing arm and a moveable guide slot capping with the ear portion to restrict the sliding movement of the lockout element on the nail pusher. As the pushing arm extends towards the corresponding end of the nail supplying slot, a nail is pushed into the drive track to shoot. The lockout element enters into the side slot to block the stopper element when the nail is exhausted, so as to enhance the shooting blocking effect of the nail gun.
    Type: Application
    Filed: February 7, 2011
    Publication date: July 26, 2012
    Inventors: I-TSUNG WU, Po-Feng Huang, Yi-Zhou Zhang
  • Patent number: 8009235
    Abstract: An auto-detection circuit for detecting video signals includes a reception end for receiving a video signal, a synchronization signal detector coupled to the reception end for generating a waveform according to voltage variation of the video signal, a peak value detector coupled to the synchronization signal detector for determining peak value of the wave form, a direct current voltage level switch coupled to the peak value detector for switching output voltage as first direct current voltage level or second direct current voltage level, and an output end coupled to the direct current voltage level switch for outputting the output voltage.
    Type: Grant
    Filed: February 8, 2007
    Date of Patent: August 30, 2011
    Assignee: Wistron Corporation
    Inventors: Po-Feng Huang, Hung-Hsi Chien, Hsin-Yuan Hsieh, Cheng-Tai Yang, Wei-Chen Chou
  • Patent number: 7628834
    Abstract: An exemplary compressed air filter assembly for nail gun has an end cap at a handle of the nail gun, having an inlet aperture for guiding external compressed air therein, communicating with a main air chamber of the handle; an inlet pipe extending in the inlet aperture and the main air chamber, having a ring-shaped step formed at an inner peripheral surface of a sidewall thereof; and a filter disposed at the inlet pipe. At least one bar is provided at the sidewall of the inlet pipe, transversely disposed in the inlet aperture, and the filter being disposed between the at least one bar and the ring-shaped step. The compressed air filter assembly for nail gun utilize the at least one bar to support a center portion of the filter, which can improve the strength of the filter to resist the blasting of the compressed air.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: December 8, 2009
    Assignees: De Poan Pneumatic Corp., Robert Bosch Tool Corporation
    Inventors: Po-Feng Huang, Marco Laubach
  • Publication number: 20090038277
    Abstract: An exemplary compressed air filter assembly for nail gun has an end cap at a handle of the nail gun, having an inlet aperture for guiding external compressed air therein, communicating with a main air chamber of the handle; an inlet pipe extending in the inlet aperture and the main air chamber, having a ring-shaped step formed at an inner peripheral surface of a sidewall thereof; and a filter disposed at the inlet pipe. At least one bar is provided at the sidewall of the inlet pipe, transversely disposed in the inlet aperture, and the filter being disposed between the at least one bar and the ring-shaped step. The compressed air filter assembly for nail gun utilize the at least one bar to support a center portion of the filter, which can improve the strength of the filter to resist the blasting of the compressed air.
    Type: Application
    Filed: August 10, 2007
    Publication date: February 12, 2009
    Inventor: Po-Feng Huang
  • Publication number: 20090026244
    Abstract: A driver guiding set for a power nail gun includes a forward plate fixedly disposed at a bottom portion of the gun body, with a surface entirely being flat for supporting the striking blade from one side; a first rearward plate fixedly mounted to the forward plate for supporting the striking blade from the other side; a first magazine rail fixedly disposed on the first rearward plate; a second magazine rail slidably disposed on the first magazine rail; a second rearward plate fixedly mounted to the second magazine rail, which is capable of locating at a first position to engage with the first rearward plate and contact on the forward plate, and locating at a second position to be separated from the forward plate and the first rearward plate, so that the second rearward plate is capable of moving between the first and second positions; and a nail guiding track formed between the first and the second rearward plates when the second rearward plate is located at the first position, for guiding the striking blade
    Type: Application
    Filed: October 7, 2008
    Publication date: January 29, 2009
    Inventor: Po-Feng HUANG
  • Publication number: 20080190987
    Abstract: A driver guiding set for a power nail gun includes a forward plate fixedly disposed at a bottom portion of a gun body of the power nail gun, a first rearward plate fixedly disposed at the forward plate, a first magazine rail fixed to the first rearward plate, a second magazine rail slidably disposed on the first magazine rail, and a second rearward plate fixedly disposed on the second magazine rail. A nail guiding track is disposed between the first and second rearward plates, which is switched in one of the status of parting and locking. When the second rearward plate contacts with the forward plate and the first rearward plate to lock the nail guiding track, the nail guiding track can induce a striking blade to strike the nail in the nail guiding track. When the second rearward plate moves far away form the forward plate and the first rearward plate to part the nail guiding track, the nail guiding track will be lifted, then the user can conveniently remove the nail locked in the nail guiding track.
    Type: Application
    Filed: February 14, 2007
    Publication date: August 14, 2008
    Inventor: Po-Feng Huang
  • Publication number: 20080136968
    Abstract: An auto-detection circuit for detecting video signals includes a reception end for receiving a video signal, a synchronization signal detector coupled to the reception end for generating a waveform according to voltage variation of the video signal, a peak value detector coupled to the synchronization signal detector for determining peak value of the wave form, a direct current voltage level switch coupled to the peak value detector for switching output voltage as first direct current voltage level or second direct current voltage level, and an output end coupled to the direct current voltage level switch for outputting the output voltage.
    Type: Application
    Filed: February 8, 2007
    Publication date: June 12, 2008
    Inventors: Po-Feng Huang, Hung-Hsi Chien, Hsin-Yuan Hsieh, Cheng-Tai Yang, Wei-Chen Chou