Nonmetallic Frame Having Metallic Reinforcement Or Frame Composed Of Metal-plastic Composite Patents (Class 473/544)
  • Patent number: 10406406
    Abstract: To enhance a resilience performance of a ball at hitting the ball, a grommet is configured to include a strip-shaped portion extending in a predetermined direction and a cylindrical portion projecting from one surface of the strip-shaped portion, the cylindrical portion being a portion through which a string passes. A bulge portion is formed on a part on another surface of the strip-shaped portion, the part being along an inner periphery of the cylindrical portion. The bulge portion has a shape bulged more than the other surface of the strip-shaped portion, and the string is folded back at the bulge portion. A plurality of the protrusions are formed between the cylindrical portions adjacent to one another, the plurality of the protrusions being portions to which the string contacts.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: September 10, 2019
    Assignee: YONEX CO., LTD.
    Inventors: Masato Kawabata, Naoto Ogawa, Ryoichi Hanawa, Toru Hiraga
  • Publication number: 20080261733
    Abstract: A composite sports racquet frame including a frame made of composite material, the frame including a head portion configured to receive and surround a string bed with a plurality of string segments, and a handle portion. The head portion includes a tip section on an opposite end of the frame from the handle portion, and the tip section includes a solid cross-section substantially throughout and the remainder of the head portion includes a hollow cross-section substantially throughout.
    Type: Application
    Filed: April 19, 2007
    Publication date: October 23, 2008
    Applicant: GEAR BOX
    Inventor: Rafael G. Filippini
  • Publication number: 20070287561
    Abstract: A two-piece sports stick exhibiting a superior strength to weight ratio. A two-piece sports stick comprising two identical sections, each comprising a substantially smooth external portion and an internal portion possessing at least one cutaway; and a multiplicity of construction pegs. The sports stick of claim 28 wherein said striking surface is adaptable to multiple sports selected from the group consisting of a lacrosse head, a blade, a racquet, and a golf club head. The sports stick design allows for decreased flexure, increased rigidity and increased durability, which lend to greater generation of force, accuracy, reliability and longer life expectancy. The sports stick also affords enhanced strength in the direction of a shot and receipt of a pass. The sports stick also provides for channeling away of fluids throughout the length of the stick.
    Type: Application
    Filed: June 13, 2006
    Publication date: December 13, 2007
    Inventor: Michael Rigoli
  • Patent number: 6579198
    Abstract: A tennis racket comprises a frame; a shaft connected to the frame at one end thereof; a grip into which the shaft is inserted at the other end thereof; and a pair of lightweight metal pieces attached to the shaft. The frame and the shaft are formed from fiber-reinforced synthetic resin, the pair of lightweight metal pieces has a U-shaped section and extends from inside the grip at a connecting portion with the shaft and along both sides of the shaft.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: June 17, 2003
    Assignee: Yonex Kabushiki Kaisha
    Inventor: Minoru Yoneyama
  • Publication number: 20030054908
    Abstract: A tennis racket comprises a frame; a shaft connected to the frame at one end thereof; a grip into which the shaft is inserted at the other end thereof; and a pair of lightweight metal pieces attached to the shaft. The frame and the shaft are formed from fiber-reinforced synthetic resin, the pair of lightweight metal pieces has a U-shaped section and extends from inside the grip at a connecting portion with the shaft and along both sides of the shaft.
    Type: Application
    Filed: August 9, 2002
    Publication date: March 20, 2003
    Inventor: Minoru Yoneyama
  • Patent number: 6254500
    Abstract: A racket which is capable of mitigating the shock transmitted to the handle, improving the stability of the face of the head-frame, and enhancing the ability to damp the vibration imparted to the frame upon impact is disclosed. The racket has two meshed pieces (5) integrally attached to the surface of each of the lateral sides of a head-frame (1) so that the meshed pieces (5) are opposed to each other across the sweet spot of the racket. The meshed piece (5) is made from titanium and has a predetermined shape.
    Type: Grant
    Filed: June 15, 1999
    Date of Patent: July 3, 2001
    Assignee: Yonex Kabushiki Kaisha
    Inventor: Minoru Yoneyama
  • Patent number: 6234921
    Abstract: A sports racquet has a lightweight frame and a pair of pods, having an increased cross-sectional width, at the 11 o'clock and 1 o'clock positions of the head. The pods also preferably have an increased wall thickness, or a molded-in weight element, so as to provide increased weight at such regions,. Preferably also, the handle has at least one weight pod at the butt portion. The three pod weighting system, i.e., having weight pods located at the 11 o'clock, 1 o'clock, and butt end positions, not only increases the polar moment of inertia of the racquet about its longitudinal axis, but also increases the moment of inertia of the racquet about the center of gravity, providing a very stable racquet. Also, because the pods in the head portion increase the width of the frame, the torsion of the frame near the tip region is greatly increased, improving the power of the racquet with respect to balls hit further out on the string bed.
    Type: Grant
    Filed: May 5, 1999
    Date of Patent: May 22, 2001
    Assignee: Benetton Sportsystem USA, Inc.
    Inventors: Stephen J. Davis, Brian J. Blonski, Joseph J. Wolverton
  • Patent number: 5935028
    Abstract: A badminton racket is composed of an oval frame, a grip, and a shaft fastened between the oval frame and the grip. The shaft has a shell which is formed of a plurality of fiber-reinforced plastic layers and at least one metal gauze layer. The metal gauze layer is formed of a first metal filament and a second metal filament such that the first metal filament is extended in a direction forming an angle with the longitudinal axis of the shaft, and that the second metal filament is extended in a direction forming an angle with the longitudinal axis of the shaft. The angles so formed are preferably 60 degrees each.
    Type: Grant
    Filed: August 4, 1998
    Date of Patent: August 10, 1999
    Assignee: Shenly Won Sport Co., Ltd.
    Inventor: Kun-Nan Lo
  • Patent number: 5816959
    Abstract: A method for making a game racket includes two molds having a mold cavity for receiving an annular rib and a network engaged between the molds and engaged with the annular rib. A material is injected into the mold cavity of the molds for forming the annular frame of the game racket and for forming the annular rib in the annular frame and for allowing the network to be secured to the annular frame without threading operation. The annular rib has one or more holes for engaging with the material and for allowing the annular rib to be solidly secured in the annular frame.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: October 6, 1998
    Inventors: Se Lin, Johnny Lin
  • Patent number: 5735759
    Abstract: A game racket includes an annular frame and a tube secured to the annular frame. An annular rib is engaged in the annular frame, and a network has a peripheral portion engaged with the annular rib and engaged in the annular frame for allowing the network to be secured to the annular frame without threading operation. The game racket may thus be made quickly and the manufacturing cost may thus be greatly decreased. The annular rib has one or more holes for engaging with the plastic material and for allowing the annular rib to be solidly secured in the annular frame.
    Type: Grant
    Filed: March 24, 1997
    Date of Patent: April 7, 1998
    Inventors: Se Lin, Johnny Lin