Patents Assigned to O-Ta Precision Industry Co., Ltd.
  • Patent number: 9750990
    Abstract: A golf club head and a low density alloy thereof are provided. The low density alloy has a balanced weight percentage of titanium, 10˜11 wt % aluminum, and trace elements including (C+N+O) <0.2 wt %, silicon <0.2 wt %, and (Fe+Cr+V+Mo) <0.4 wt %. The golf club head has a tensile strength of 90˜110 kips/in2, and a density of 4.18˜4.30 g/cm3. Through heat treatment at a high temperature of 925±25° C., the precipitation or ?2 phase of the interfacial interphase can be avoided, and thus the embrittlement phenomena can be improved.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: September 5, 2017
    Assignee: O-Ta Precision Industry Co., Ltd.
    Inventors: Chuan-Hsien Chang, Jui-Ming Su, Chih-Yeh Chao
  • Patent number: 8287403
    Abstract: An iron-based alloy for a golf club head includes: chromium in an amount ranging from 16.3 to 17.2 wt %; nickel in an amount ranging from 5.8 to 6.5 wt %; nitrogen in an amount ranging from 0.10 to 0.20 wt %; carbon in an amount ranging from 0.01 to 0.12 wt %; silicon in an amount ranging from 0.3 to 1.2 wt %; manganese in an amount ranging from 0.3 to 1.2 wt %; and a balance of iron and impurities, based on a total weight of the iron-based alloy. The alloy has a duplex-phase microstructure including a martensite phase and 10 to 30 percent austenite phase, and has a tensile strength greater than 120 Ksi and an elongation greater than 35%.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: October 16, 2012
    Assignee: O-Ta Precision Industry Co., Ltd.
    Inventors: Chih-Yeh Chao, Chuan-Hsien Chang, Jui-Ming Su
  • Publication number: 20110319187
    Abstract: A golf club has a ferrule that includes an inner sleeve made of environmentally friendly high friction silicone rubber and fitted around the shaft, and an outer sleeve fitted around the inner sleeve and having a through hole. Preferably, the through hole is stepped. The inner sleeve is limited within a large hole section of the through hole by an annular shoulder face and the engaging elements in order to prevent separation of the inner and outer sleeves.
    Type: Application
    Filed: June 23, 2010
    Publication date: December 29, 2011
    Applicant: O-TA PRECISION INDUSTRY CO., LTD.
    Inventor: Wei-Hsiang Chou
  • Publication number: 20110263349
    Abstract: Disclosed is a golf club head which enables to improve a direction of a hit ball while assuring a carry and run of the ball corresponding to a head speed and a position at which the ball is hit on a face part, and enables to assure a stable direction of a hit ball while realizing a stable carry and run of the ball even if the ball is hit at a position other than the sweet spot.
    Type: Application
    Filed: March 30, 2011
    Publication date: October 27, 2011
    Applicants: O-TA Precision Industry Co., Ltd., MRC COMPOSITE PRODUCTS CO., LTD.
    Inventors: Hitoshi KODAMA, Tsutomu Ibuki, Lee Kung Wen, Lin Chon Chen
  • Patent number: 8020606
    Abstract: A method of making a wax mold for a golf club head includes the steps of: a) positioning a male die in a cavity of a female die; b) injecting and filling dissolvable wax into a gap between an outer surface of the male die and an inner surface of the female die; c) cooling and solidifying the dissolvable wax in the gap to obtain a wax shell; d) removing the wax shell from the male die and the female die, the wax shell being provided with a hole extending through inner and outer surfaces of the wax shell; and e) inserting a wax plug into the hole to form the wax mold.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: September 20, 2011
    Assignee: O-TA Precision Industry Co. Ltd.
    Inventors: Hsiao-Wen Chao, Lung-Sheng Sun, Yung-Yueh Liu
  • Publication number: 20110218052
    Abstract: A golf club head made of a titanium-based alloy is provided. The titanium-based alloy includes: aluminum in an amount of 5.2 wt %; chromium in an amount of 1.0 wt %; iron in an amount of 1.0 wt %; tin in an amount of 1.0 wt %; and a balance of titanium and an unavoidable impurity, based on a total weight of the titanium-based alloy.
    Type: Application
    Filed: March 3, 2010
    Publication date: September 8, 2011
    Applicant: O-TA PRECISION INDUSTRY CO., LTD.
    Inventors: Shun-Fu Hu, Chuan-Hsien Chang, Yao-Hao Kuo
  • Publication number: 20110086726
    Abstract: An iron-based alloy for a golf club head includes: chromium in an amount ranging from 16.3 to 17.2 wt %; nickel in an amount ranging from 5.8 to 6.5 wt %; nitrogen in an amount ranging from 0.10 to 0.20 wt %; carbon in an amount ranging from 0.01 to 0.12 wt %; silicon in an amount ranging from 0.3 to 1.2 wt %; manganese in an amount ranging from 0.3 to 1.2 wt %; and a balance of iron and impurities, based on a total weight of the iron-based alloy. The alloy has a duplex-phase microstructure including a martensite phase and 10 to 30 percent austenite phase, and has a tensile strength greater than 120 Ksi and an elongation greater than 35%.
    Type: Application
    Filed: October 13, 2009
    Publication date: April 14, 2011
    Applicant: O-TA PRECISION INDUSTRY CO., LTD.
    Inventor: Chih-Yeh Chao
  • Publication number: 20110014994
    Abstract: A golf putter head includes a head body, and a face plate unit disposed on the head body and having one surface to serve as a putting face. The face plate unit has a plurality of faces surrounding an axis thereof and is rotatably coupled to the head body so that the face plate unit is rotatable about the axis to make one of the faces of the face plate unit serve as the putting face.
    Type: Application
    Filed: July 14, 2009
    Publication date: January 20, 2011
    Applicant: O-TA PRECISION INDUSTRY CO., LTD.
    Inventor: Yi-Ping Chuang
  • Publication number: 20100065240
    Abstract: A method of making a wax mold for a golf club head includes the steps of: a) positioning a male die in a cavity of a female die; b) injecting and filling dissolvable wax into a gap between an outer surface of the male die and an inner surface of the female die; c) cooling and solidifying the dissolvable wax in the gap to obtain a wax shell; d) removing the wax shell from the male die and the female die, the wax shell being provided with a hole extending through inner and outer surfaces of the wax shell; and e) inserting a wax plug into the hole to form the wax mold.
    Type: Application
    Filed: September 15, 2008
    Publication date: March 18, 2010
    Applicant: O-TA Precision Industry Co. LTD.
    Inventors: Hsiao-Wen CHAO, Lung-Sheng Sun, Yung-Yueh Liu
  • Publication number: 20090288285
    Abstract: A method of making a golf club head includes the steps of: preparing a head body including a front engaging face, a back face, an opening extending through the front engaging face and the back face, a groove extending around the opening and recessed inwardly from the front engaging face, a peripheral edge surrounding the groove, and at least one flange extending along the peripheral edge and protruding away from the front engaging face; mounting a striking plate on the front engaging face to cover the opening; bending the flange toward the striking plate and pressing the flange against the striking plate; joining the striking plate to the head body using a solder; and polishing the head body and the striking plate to remove excess of the flange and the solder.
    Type: Application
    Filed: September 26, 2008
    Publication date: November 26, 2009
    Applicant: O-Ta Precision Industry Co. LTD.
    Inventors: Hsiao-Wen CHAO, Yu-Zheng HUANG, Tien-Lung TANG
  • Publication number: 20090288282
    Abstract: A method of making a golf club head includes the steps of: preparing a head body formed with at least one cavity, and at least one flange protruding from the head body and proximate to the cavity; mounting a counterweight unit in the cavity; bending the flange toward the cavity and pressing the flange against the counterweight unit; joining the counterweight unit to the head body using a solder; and polishing the head body and the counterweight unit to remove excess of the flange and the solder.
    Type: Application
    Filed: September 26, 2008
    Publication date: November 26, 2009
    Applicant: O-TA PRECISION INDUSTRY CO. LTD.
    Inventors: Hsiao-Wen Chao, Yu-Zheng Huang, Tien-Lung Tang
  • Publication number: 20090246066
    Abstract: An iron-based alloy for making a golf club head includes: chromium in an amount ranging from 21.5 to 24.5 wt %; nickel in an amount ranging from 4.45 to 6.05 wt %; nitrogen in an amount ranging from 0.17 to 0.23 wt %; copper in an amount ranging from 1.5 to 3.5 wt %; carbon in an amount of greater than 0 wt % and not more than 0.06 wt %; and a balance of iron, based on a total weight of the iron-based alloy.
    Type: Application
    Filed: September 26, 2008
    Publication date: October 1, 2009
    Applicant: O-Ta Precision Industry Co., LTD.
    Inventors: Jui-Ming SU, Chuan-Hsien Chang, Tso-Ming Chang
  • Publication number: 20090042667
    Abstract: A golf club head includes a shell, a covering plate, and a male-and-female engagement unit. The shell includes an inner surface, an outer surface, an assembling hole extending through the inner and outer surfaces, a bounding edge bounding the assembling hole, and a flange projecting inwardly from the inner surface and the bounding edge and extending toward the assembling hole. The flange has a shoulder face that has a depth from the outer surface and that is adjacent to the bounding edge. The shoulder face extends in full length of the bounding edge. The covering plate is inserted into the assembling hole and contacts the shoulder face. The male-and-female engagement unit is provided on and interengages the covering plate and the flange.
    Type: Application
    Filed: August 8, 2007
    Publication date: February 12, 2009
    Applicant: O-TA Precision Industry Co., Ltd.
    Inventors: Chon-Chen Lin, Shun-Fu Hu, Yen-Chi Hsu, Yu-Ting Kao
  • Patent number: 7452286
    Abstract: A golf club head includes a head body, at least one arcuate rail, and at least one counterweight unit. The head body includes a front striking face, and a rear arcuate face that extends rearwardly from two opposite sides of the front striking face and that has top and bottom ends. The arcuate rail projects from an outer surface of the rear arcuate face proximate to the bottom end. The counterweight unit is positioned adjustably on the arcuate rail.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: November 18, 2008
    Assignee: O-Ta Precision Industry Co., Ltd.
    Inventors: Chon-Chen Lin, Shun-Fu Hu, Yen-Chi Hsu
  • Patent number: 7147198
    Abstract: A wax pattern for use in making a golf club head has a shell wall which defines a hollow region and which includes a front portion, a rear displacement portion and a dividing line extending between the front and rear displacement portions. The wax pattern has a profile conforming to that of the golf club head. A metal blank having the same shape and size as the wax pattern is made by using the wax pattern. The blank is then cut along a dividing line to remove a rear displacement portion thereof so as to form a metal part for making the golf club head.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: December 12, 2006
    Assignee: O-Ta Precision Industry Co. Ltd.
    Inventors: Chon-Chen Lin, Yen-Chi Hsu
  • Patent number: 7134972
    Abstract: A golf head includes a hollow head body defining a front opening and having a reinforcing portion that is made from a non-metal material, a striking plate received in the front opening and secured to the head body, and a plurality of first reinforcing metal ribs embedded securely in the reinforcing portion of the head body.
    Type: Grant
    Filed: June 7, 2004
    Date of Patent: November 14, 2006
    Assignee: O-Ta Precision Industry Co., Ltd.
    Inventors: Yen-Chi Hsu, Chon-Chen Lin
  • Patent number: 6681612
    Abstract: A method of manufacturing a curved metal plate includes pressing a metal plate made of a plate material selected from titanium or titanium alloy with a die segment that forms thereon a convex surface curving in at least one direction and at least one recess, with a first side of the metal plate in contact with the convex surface, thereby curving the metal plate along the convex surface while allowing a part of the plate material on the first side of the metal plate to intrude into the at least one recess under pressure, thus forming at least one rib on the first side of the metal plate.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: January 27, 2004
    Assignees: Sumitomo Metal Industries, Ltd., O-TA Precision Industry Co., Ltd.
    Inventors: Satoshi Matsumoto, Nozomu Ariyasu, Chon Chen Lin
  • Patent number: D573211
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: July 15, 2008
    Assignee: O-TA Precision Industry Co., Ltd.
    Inventors: Chon-Chen Lin, Hsiao-Wen Chao, Ming-Yung Pan, Chin-Lung Liu, Ting-Ta Yang
  • Patent number: D592714
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: May 19, 2009
    Assignee: O-TA Precision Industry Co., Ltd.
    Inventor: Kung-Wen Lee