Patents Assigned to Crystal Industrial Co., Ltd.
  • Publication number: 20040163693
    Abstract: This invention provides an innovative handle grip for the walking stick, in particular the wrist strap that is easy for adjustment in length and the handle grip itself is easy to construct. The wrist strap has one end passing the buckle to form a loop and the other end is fastened in the cavity on the side of the handle grip. The buckle strap has two perforations and one central brace to support one end of the wrist strap and a brake to limit the movement of the strap.
    Type: Application
    Filed: February 25, 2003
    Publication date: August 26, 2004
    Applicant: CRYSTAL INDUSTRIAL CO., LTD.
    Inventor: S. Uemura
  • Patent number: 6595226
    Abstract: A stick structure. The stick structure is resiliently extensible and adjustable in length. The adjustment of length of the stick can be easily achieved by both right-handed and left-handed users. The stick includes multiple fitting tubes nested in each other and an adjusting/locating device and a resilient extensible device disposed at the fitting sections of the fitting tubes. When rotating clockwise or counterclockwise any of the fitting tubes, the rotary body is rotated to forcedly stretch apart the damper to tightly abut against the inner circumference of another fitting tube so as to easily adjust the length of the stick and fix the stick. In addition, depending on use in different environments, the stick is freely and resiliently extensible to a certain extent.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: July 22, 2003
    Assignee: Crystal Industrial Co., Ltd.
    Inventor: Shinichi Uemura
  • Patent number: 6202663
    Abstract: A stick-used stageless adjusting device for both left-handed and right-handed users to conveniently adjust the length of the stick. The stick is formed by an upper fitting tube and a lower fitting tube fitted into the upper fitting tube. The stageless adjusting device is disposed at top end of the lower fitting tube and includes a movable body and a brake body. The movable body includes two conic bodies and a thread rod connected between the conic bodies. The conic faces of the conic bodies are opposite to each other. The brake body is formed with an annular groove on outer circumference for a rubber ring to insert therein and composed of two semicylindrical halves. Each half is disposed with a thread for screwing with the thread rod of the movable body.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: March 20, 2001
    Assignee: Crystal Industrial Co., Ltd.
    Inventor: Shinichi Uemura
  • Patent number: 5769104
    Abstract: A stagelessly ajustable telescopic waking stick having a position retaining device is made up of an upper pipe and a lower pipe that are telescopically adjusted so as to permit the walking stick to be extended to any length within a limited range and be firmly retained at any selected length by the position retaining device so as to permit the telescopic walking stick to be suitable to people of various physical sizes.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: June 23, 1998
    Assignee: Crystal Industrial Co., Ltd.
    Inventor: Shinichi Uemura
  • Patent number: RE38635
    Abstract: A stagelessly adjustable telescopic waking stick having a position retaining device is made up of an upper pipe and a lower pipe that are telescopically adjusted so as to permit the walking stick to be extended to any length within a limited range and be firmly retained at any selected length by the position retaining device so as to permit the telescopic walking stick to be suitable to people of various physical sizes.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: October 26, 2004
    Assignee: Crystal Industrial Co., Ltd.
    Inventor: Shinichi Uemura