×

Golf club head

  • US 5,967,904 A
  • Filed: 11/15/1996
  • Issued: 10/19/1999
  • Est. Priority Date: 11/17/1995
  • Status: Expired due to Fees
First Claim
Patent Images

1. A hollow metal golf club head comprising a face and a body, said golf club head having a volume not less than 220 cc and not greater than 320 cc and a weight not less than 170 g and not greater than 220 g wherein at least said face comprises a rapidly solidified Al-based alloy exhibiting superplasticity and having a specific strength of not less than 20 Kgf/mm2 /g/cm3 and a specific Young'"'"'s modulus of not less than 2,700 Kgf/mm2 /g/cm3, said rapidly solidified Al-based alloy expressed by one of the following general formulae (I) to (IV):

  • 
    
    space="preserve" listing-type="equation">Al.sub.a M.sub.1b X.sub.e (I)
    
    
    space="preserve" listing-type="equation">Al.sub.a M.sub.1(b-c) M.sub.2c X.sub.e (II)
    
    
    space="preserve" listing-type="equation">Al.sub.a M.sub.1(b-d) M.sub.3d X.sub.e (III)
    
    
    space="preserve" listing-type="equation">Al.sub.a M.sub.1(b-c-d) M.sub.2c M.sub.3d X.sub.e (IV)wherein M, represents at least one element selected from the group consisting of Mn, Fe, Co, Ni, and Mo;

    M2 represents at least one element selected from the group consisting of V, Cr, and W;

    M3 represents at least one element selected from the group consisting of Li, Ca, Mg, Si, Cu, and Zn;

    X represents at least one element selected from the group consisting of Nb, Hf, Ta, Y, Zr, Ti, Ag, rare-earth elements and a composite (Mm represents misch metal) of rare-earth elements; and

    a, b, c, d, and e lie in the following ranges, in atomic percentages;

    75≦

    a≦

    97, 0.5≦

    b≦

    15, 0.1≦

    c≦

    5, 0.5≦

    d≦

    5, and 0.5≦

    e≦

    10.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×