Patents by Inventor Chun-Yong Cheng

Chun-Yong Cheng 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).

  • Publication number: 20030084545
    Abstract: A lightweight cement trowel handle with preferred tightness and safe grip, comprises a handle interlocked by aligning two shell-shaped bottom seat and top cover through high frequency pressure and sheathed by a soft TPR material as the external layer; wherein, the bottom seat and the upper cover not only have reinforcing ribs disposed on the inner sides, but also have clamp frames with several double diameter holes disposed in the front aspect; a ring seat is disposed at the distal end of the bottom seat; an insert end of the said top cover is forced into an insert slot of the ring seat for mutual alignment and interlock; a blade piece is clamped between the clamp frames of the handle, penetrated by a screw and fastened by a nut; thereby the said hexagon nut is fitly received and fixed inside the double diameter hole of the top cover.
    Type: Application
    Filed: November 2, 2001
    Publication date: May 8, 2003
    Inventor: Chun-Yong Cheng
  • Patent number: 6513199
    Abstract: A handle of a trowel, comprising a penetrating hole disposed longitudinally within, with one end rim thereof extending to form an arcuate bearing piece permitting a narrow rod of a blade to insert in the penetrating hole and to press against onto a concaved arc-plane on the front rim of the bearing piece, is characterized that the circumferential side of the penetrating hole of the handle is disposed longitudinally with a plurality of ribs to enable the inserted narrow rod at the distal end of the blade to have preferred tightness; a disposed sealing cover and the bearing piece have corresponding shapes, both interlock correspondingly by means of a concave and a convex fastening members to sheath and firmly seal the narrow rod of the blade.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: February 4, 2003
    Inventor: Chun-Yong Cheng