×

Golf club including alignment device

  • US 4,340,229 A
  • Filed: 02/06/1981
  • Issued: 07/20/1982
  • Est. Priority Date: 02/06/1981
  • Status: Expired due to Fees
First Claim
Patent Images

1. A golf putter head comprising:

  • an elongate ball-striking face having a ball striking area, said head having a horizontal plane normal to said face;

    sighting means disposed in a top surface of said head for visually determining when said horizontal plane is parallel with the putting surface, said sighting means having an index adjacent said ball-striking area, said sight means including a cylindrical sighting cavity recessed in said head and having a closed lower end and an open upper end;

    a first sighting spot centrally disposed in said open upper end and said first sighting spot being a circular spot disposed concentric with said cylindrical cavity on a transparent lens concentrically disposed in said upper end, said transparent lens having reticle lines to permit the user to hold said head at a peredetermined offset from a parallel position with respect to the surface of the ground;

    a second complimentary sighting spot disposed on said closed lower end wherein an imaginary line through said first spot and said second spot is normal to said horizontal plane, said second spot being circular and concentric with said cylindrical cavity and having a diameter essentially equal to the diameter of said first spot whereby coincidence of said first and second spots causes said second spot to disappear, whereby a user looking along a line of sight vertical with respect to the putting surface will observe coincidence of said first and second spots when said horizontal plane is parallel with the putting surface; and

    said first spot being of a dark color and said second spot being of a light color surrounded by said dark color thereby providing visual contrast when said first and second spots are not in coincidence as seen by the viewer.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×