Patents by Inventor Yao-Chung Huang

Yao-Chung 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: 7895757
    Abstract: A pair of gardening shears include a first cutting blade, a second cutting blade, and two extension arms. The second cutting blade has a first portion pivotally mounted on the first portion of the first cutting blade by a pivot bolt. Each of the extension arms has a first portion pivotally mounted on the mediate portion of the second cutting blade and a mediate portion movably mounted on the second portion of the first cutting blade by a guide pin. Thus, when the first cutting blade is driven by the extension arms to pivot toward the second cutting blade, the guide pin is movable outwardly relative to the pivot bolt to increase a length between the guide pin and the pivot bolt to increase the force arm length and to produce a larger cutting force by the leverage action.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: March 1, 2011
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Publication number: 20110023309
    Abstract: A pressing handle is connected to a moveable blade having a hook-shaped engaging slot near the outer edge of an aperture to which a gripping handle fixed blade is pivoted. A containment space is formed by the junction of the gripping handle and a side of the fixed blade. The containment space has an arc-shaped opening, and the fixed blade has a positional aperture at a position corresponding to the opening. An end of an engaging member has an axle aperture and another end forms an engaging end, with a concave region formed between the two ends. A positioning pin passes through the engaging member and a torsion spring and is attached to the positional aperture. A push button-shaped body has a tongue at its lower end, an edge of which extends as a stop, and the tongue and the stop are both slidably mounted in the containment space.
    Type: Application
    Filed: July 30, 2009
    Publication date: February 3, 2011
    Applicant: HO CHENG GARDEN TOOLS CO., LTD.
    Inventor: Yao-Chung Huang
  • Patent number: 7774901
    Abstract: A retractable handle assembly includes an outer pipe, an inner pipe, an outer mounting sleeve, a control seat, a positioning post, a movable pin, a control knob, and a link. Thus, the positioning post extends through the through bore of the outer mounting sleeve and is inserted into one of the two positioning holes of the inner pipe to lock the inner pipe onto the outer pipe, so that the inner pipe and the outer pipe are combined solidly and stably to bear a greater load, thereby enhancing the strength of the retractable handle assembly. In addition, the inner pipe and the outer pipe are not in frictional contact to prevent from incurring jam between the inner pipe and the outer pipe, thereby enhancing the lifetime of the retractable handle assembly.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: August 17, 2010
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: 7694387
    Abstract: A retractable handle assembly includes a shank, an extension pipe, a retractable pipe, a receiving member, an expandable member, a control member, a driving member, and a rotation member. The retractable pipe is movable relative to the extension pipe by rotation of the rotation member to adjust the distance between the retractable pipe and the extension pipe so as to adjust the length of the retractable handle assembly. Thus, when each of the push flanges of the control member is inserted into the respective locking recess of the expandable member by rotation of the control member, the control member is locked by the expandable member, thereby preventing the control member from being jammed due to an excessive rotation.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: April 13, 2010
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: 7650992
    Abstract: A combination of a pair of gardening shears and a suspension rack includes a suspension rack, and a pair of gardening shears detachably mounted on the suspension rack. The gardening shears include two blade portions each having a distal end provided with a sharp portion. The suspension rack includes a support plate, a locking post, and a safety guard. Thus, the sharp portion of each of the two blade portions of the gardening shears is fully hidden in and surrounded by the safety guard of the suspension rack so that the safety guard of the suspension rack provides an isolating function to prevent a consumer's hand from directly touching the sharp portion of each of the two blade portions of the gardening shears so as to protect the consumer's safety.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: January 26, 2010
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: 7640666
    Abstract: A pair of gardening shears include two cutting blades pivotally connected with each other, two movable members each having a first side mounted on a respective cutting blade, two fixing members each mounted on a second side of a respective movable member, two locking bolts each extended through the fixing members, the movable members and the cutting blades, and two locking nuts each screwed onto a respective locking bolt. Thus, the cutting blades are limited by the fixing members and the locking bolts so that the cutting blades are juxtaposed to each other closely without producing a gap between the cutting blades, thereby facilitating a user operating the gardening shears.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: January 5, 2010
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Publication number: 20090151169
    Abstract: A pair of gardening shears include two support seats spaced from each other, an anvil mounted between the support seats, a slide movably mounted between the support seats and having a cutting blade that is movable relative to the anvil, and a rotation arm pivotally mounted between the support seats to move the slide relative to the anvil by rotation of the rotation arm relative to the support seats and the slide. The slide has a side formed with an elongated driven rack. The rotation arm has an end portion formed with a drive gear portion pivotally mounted between the support seats and meshing with the driven rack of the slide.
    Type: Application
    Filed: February 24, 2009
    Publication date: June 18, 2009
    Inventor: Yao-Chung Huang
  • Publication number: 20080295336
    Abstract: A cutting tool includes two shanks pivotally connected with each other and each having a first end provided with an operation member which has a first side formed with a cutting blade and a second side formed with a shovel portion and a second end provided with a grip portion. Thus, the operation members of the shanks co-operate to provide a cutting or shearing function and to function as a shovel. In addition, the cutting tool can provide a cutting or shearing fiction and can function as a shovel so that a user can operate the cutting tool to perform two different works without having to replace a different tool, thereby facilitating the user operating the cutting tool.
    Type: Application
    Filed: May 30, 2007
    Publication date: December 4, 2008
    Inventor: Yao-Chung Huang
  • Patent number: D634594
    Type: Grant
    Filed: August 15, 2010
    Date of Patent: March 22, 2011
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: D634993
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: March 29, 2011
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: D634994
    Type: Grant
    Filed: August 15, 2010
    Date of Patent: March 29, 2011
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: D634995
    Type: Grant
    Filed: August 15, 2010
    Date of Patent: March 29, 2011
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: D635416
    Type: Grant
    Filed: August 15, 2010
    Date of Patent: April 5, 2011
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: D635417
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: April 5, 2011
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: D635418
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: April 5, 2011
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: D638673
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: May 31, 2011
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: D638674
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: May 31, 2011
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: D638675
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: May 31, 2011
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: D638676
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: May 31, 2011
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: D638677
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: May 31, 2011
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang