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: 7451544
    Abstract: A pair of gardening shears include a first cutting member, a second cutting member, an end cap, and a sliding member. Thus, the gardening shears are used to cut branches or leaves and are available for a grafting purpose, thereby enhancing the versatility of the gardening shears. In addition, the male slip of the son plant and the female slip of the mother plant are formed by the blade of the sliding member to match each other exactly, so that the male slip of the son plant is inserted into and combined with the female slip of the mother plant rigidly and closely, thereby enhancing the grafting effect of the son plant and the mother plant.
    Type: Grant
    Filed: February 10, 2005
    Date of Patent: November 18, 2008
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: 7370423
    Abstract: A pair of long-arm gardening shears include a main body, a first casing, a second casing, a cutting blade assembly, a retaining member, a push button, and a spring. Thus, the angle between the cutting blade assembly and the main body is adjusted so that the length of the long-arm gardening shears is adjusted, thereby facilitating a user operating the long-arm gardening shears to shear the lawn at a lower height and the branches at a higher level. In addition, the use only needs to press the push button so as to rotate the cutting blade assembly and to release the push button so as to lock the cutting blade assembly, thereby facilitating the user adjusting the angles of the long-arm gardening shears.
    Type: Grant
    Filed: February 10, 2005
    Date of Patent: May 13, 2008
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: 7293934
    Abstract: A telescopically adjustable pipe includes an outer tube, an inner tube, an inner bushing, a sleeve, a push member, a mounting bracket, a positioning member, and a retaining member. Thus, the positioning member is moved by movement of the push member and is detachably locked in the respective positioning hole of the inner tube to lock the inner tube in the outer tube, so that the inner tube is locked in and cannot slip from the outer tube.
    Type: Grant
    Filed: March 15, 2005
    Date of Patent: November 13, 2007
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: 7059021
    Abstract: A lopper shear pull-rope grip includes a closed end provided with a bulge. The through hole of the bulge is connected to the hollow notch of the grip, where a rope can penetrate the through hole. And, a slanting board extends downwards from the through hole. The slanting board is provided with a conductive rim. Moreover, a through notch is formed in the grip under the bulge. A pulley is mounted in the through notch and has a rim. Thus, the pulley can slide smoothly along the slanting board of the grip. When the rope is pulled upwards, the pulley will clamp the rope more compactly so as to adjust and position the rope rapidly for convenient and loose-free usage.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: June 13, 2006
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: 6983584
    Abstract: A gardening rake includes a grip, extended poles and rake head, of which the extended poles are provided at one end of the grip. The rake heads are mounted at the end of the extended poles and constructed of several spaced talons. The talons of rake heads are designed with a T-shape. Based upon this modified structure, the double-headed rake heads can grab or rake off foreign materials via the clamping devices, thus offering an ease-of-use.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: January 10, 2006
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: 6981326
    Abstract: A gardening scissor includes a handle, a fixed jaw, a movable jaw, a linkage slab, and a module board. The fixed jaw and module board are constructed of two separating boards with a seam between them. The seam is provided with a protective cover by the hood. The width of this hood is capable of providing a cover on the seam, provided that the flexibility of fixed jaw and movable jaw is not hindered. The linkage side of hood is available with a built-in edge. Besides, the built-in edge and the inwall between two boards are provided with a bulge strip and notch for positioning of the hood. It is possible to prevent branches inserting into the seam and enrich the appearance of gardening scissors.
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: January 3, 2006
    Assignee: Ho Cheng Gardening TOols Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: 6883208
    Abstract: This innovation provides a hedge shear extendable handle enhanced structure focusing on resolving the operating inconvenience and physical deficiencies such as bending and deformation resulting from the operations of legendary hedge shear. The main structure of the enhancement is a pivot joint formation of an inner and outer tube. The main feature is the H-shape profile structure of the inner tube with a slide way built with an internal diffusion slot and a perforation slot. The perforation slot has a few interleaved positioning fillisters along the slide way. The positioning fillisters in the inner tube will park the sliding block when it shifted upward and matching with the locating block on the top pillar while moving upward. A press button assembles on top of the pillar and remains in an upward position with the sliding block under normal condition with the help of a spring.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: April 26, 2005
    Inventor: Yao-Chung Huang
  • Patent number: 6829829
    Abstract: A gardening pruner comprises two handles, two blades, two pivoting plates, and two actuating plates. The actuating plates are fastened at a bottom end with the handles and are provided at a top end with a toothed portion. The two actuating plates are pivoted together with the two pivoting plates by a pivot. The two blades are provided at a bottom end with a toothed portion and are pivoted together with the two pivoting plates by another pivot such that the toothed portions of the two blades are respectively engaged with the toothed portions of the two actuating plates, thereby resulting in a gear-type transmission of force from the handles to the blades.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: December 14, 2004
    Inventor: Yao-Chung Huang
  • Patent number: 6681492
    Abstract: A tree pruner includes a first handle, a second handle, a fixed jaw plate, a movable jaw plate, a gear, a check plate, and a push plate. The movable jaw plate is actuated by the gear to bring about a first scissors action in conjunction with the fixed jaw plate at such time when the second handle is swivelled toward the fixed jaw plate such that the gear is pushed by the push plate to turn. The gear is arrested by the check plate so as to keep the movable jaw plate in the stationary state to facilitate a series of continuous scissors actions, with the cutting edge of the movable jaw plate remaining in the incision made into a tree twig during the first scissors action.
    Type: Grant
    Filed: July 5, 2002
    Date of Patent: January 27, 2004
    Inventor: Yao-Chung Huang
  • Patent number: 6543958
    Abstract: A connection structure is designed to connect the blade and the handle of a gardening implement and is formed of a connection rod, a control member, a locating head, and two steel balls movably contained in the recess of the control member and the locating holes of the locating head. As the control member is rotated to locate the connection rod which is fastened to the blade, the steel balls are forced by the control member in motion into the locating holes of the locating head. The blade and the handle are separated by rotating the control member in such a manner that the steel balls are forced back into the recess of the control member.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: April 8, 2003
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Publication number: 20020164196
    Abstract: A connection structure is designed to connect the blade and the handle of a gardening implement and is formed of a connection rod, a control member, a locating head, and two steel balls movably contained in the recess of the control member and the locating holes of the locating head. As the control member is rotated to locate the connection rod which is fastened with the blade, the steel balls are forced by the control member in motion into the locating holes of the locating head. The blade and the handle are separated by rotating the control member in such a manner that the steel balls are forced back into the recess of the control member.
    Type: Application
    Filed: April 23, 2001
    Publication date: November 7, 2002
    Applicant: Ho Cheng Garden Tools Co. Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: 6446343
    Abstract: A tree pruner comprises a support rod, a base mounted on one end of the support rod, a fixed jaw fastened with the base, and a movable jaw pivoted with the fixed jaw. The fixed jaw is provided with an arresting projection. The movable jaw is provided with a first stop ridge and a second stop ridge which is separated from the first stop ridge by a distance. The movement of the movable jaw is confined by the first stop ridge and the second stop ridge in conjunction with the arresting projection of the fixed jaw.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: September 10, 2002
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Publication number: 20020073557
    Abstract: An expandable tubular body is formed of an outer tube, an inner tube slidably fitted into the outer tube, and a device for locating the inner tube and the outer tube. The device is formed of a retaining pin, a press button, and a torsion spring. The inner tube and the outer tube are located in place by the retaining pin which is forced by the press button and the torsion spring to be stopped by the locating edges of the inner tube. The tubular can be expanded by pressing the press button to actuate the retaining pin to move away from the locating edges of the inner tube.
    Type: Application
    Filed: December 19, 2000
    Publication date: June 20, 2002
    Applicant: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: 6385852
    Abstract: A tree pruner includes a fixation seat, a cutter, a link rod, and an auxiliary rod member which is formed of a support rod and an expandable push rod. The support rod is pivoted at one end with the link rod, and at the other end with a locating hole of the cutter. The expandable push rod is pivoted at one end with the link rod, and at the other end with the support rod. The auxiliary rod member serves as an auxiliary application arm between the link rod and the cutter, so as to improve the operational efficiency of the tree pruner.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: May 14, 2002
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: D578841
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: October 21, 2008
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang