Weighted iron set
AssigneeAcushnet Company
InventorsMichael E. Franz, Marni Ines, Jonathan Hebreo, Ryan J. A. Ritchie
Life of this patent
Estimating the term…
Abstract
The present invention is direct to a set of golf clubs comprising long irons, mid-irons and short irons. The invention contemplates the use of titanium or steel for the main body portion and significant tungsten weight members coupled to at least the toe and a heel weight member coupled in a hosel cavity.
Claims13
A set of golf clubs comprising at least a first club head having a loft between about 15 and 25 degrees and a first club head mass, a second club head having a loft of between about 26 and 35 degrees and a second club head mass, and a third club head having a loft of about 36 degrees or greater and a third club head mass,
- the first club head comprising:
- a body made of steel comprising a heel, a toe, a topline, a sole, a hosel, a front face insert made of steel and a back wall forming a hollow cavity therebetween,
- a toe weight member formed of tungsten and coupled to a toe portion of the hollow cavity that comprises 25%-35% of the first club head mass;
- and
- a heel weight member formed of tungsten and coupled into a hosel cavity formed in a lower portion of the hosel, the heel weight member comprising 5%-10% of the first club head mass, wherein the heel weight member is enclosed in the hosel cavity by a steel cover member that forms at least a portion of the hosel.
A set of golf clubs comprising at least three first club heads having a loft between about 15 and 25 degrees and first club head masses, at least three second club heads having a loft of between about 26 and 35 degrees and second club head masses, and a third club head having a loft of about 36 degrees or greater and a third club head mass, each of the first club heads comprising:
- a body made of steel comprising a heel, a toe, a topline, a sole, a hosel, a front face insert made of steel and a back wall forming a hollow body having a first blade length,
- a toe weight member formed of tungsten and coupled to a lower toe portion of the hollow body that comprises 25%-35% of the first club head mass;
- and
- a heel weight member formed of tungsten and coupled a lower hosel portion of the body that comprises 5%-10% of the first club head mass;
- wherein the combined mass of the toe weight members and the heel weight members for the first club heads increases with loft;
- wherein the first club heads have a Center of Gravity that is less than 18 mm from a ground surface when the club head is in the standard address position and a Moment of Inertia about the y-axis of greater than 250 kg-mm2;
- and
- wherein at least one of the first club heads' Moment of Inertia about the y-axis, which extends vertically through a face center of the first club head, is greater than a second Moment of Inertia about the y-axis which extends vertically through a face center of at least one of the second club heads and less than a third Moment of Inertia about the y-axis which extends vertically through a face center of the third club head.
Dependencies are inferred from the claim text.