US20110014992A1 - Mass and/or Geometry Centered Golf Clubs - Google Patents

Mass and/or Geometry Centered Golf Clubs Download PDF

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Publication number
US20110014992A1
US20110014992A1 US12/837,997 US83799710A US2011014992A1 US 20110014992 A1 US20110014992 A1 US 20110014992A1 US 83799710 A US83799710 A US 83799710A US 2011014992 A1 US2011014992 A1 US 2011014992A1
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US
United States
Prior art keywords
shaft
head
club
mass
center
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/837,997
Inventor
John E. Morrissey
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GRAVITY CENTERED GOLF LLC
Original Assignee
Morrissey John E
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US22606109P priority Critical
Application filed by Morrissey John E filed Critical Morrissey John E
Priority to US12/837,997 priority patent/US20110014992A1/en
Publication of US20110014992A1 publication Critical patent/US20110014992A1/en
Assigned to GRAVITY CENTERED GOLF LLC reassignment GRAVITY CENTERED GOLF LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MORRISSEY, JOHN E.
Application status is Abandoned legal-status Critical

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    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B53/0466Heads wood-type
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/02Joint structures between the head and the shaft
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00Details or accessories of golf clubs, bats, rackets or the like
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B2053/0408Heads with defined dimensions

Abstract

A golf club includes a head and a shaft coupled to the head. The shaft is positioned so that an axis of the shaft intersects at or near a center of mass of the head.

Description

    RELATED APPLICATION
  • This application claims the benefit of U.S. patent application Ser. No. 61/226,061 filed on Jul. 16, 2009, the entirety of which is hereby incorporated by reference.
  • BACKGROUND
  • Playing golf well requires hitting the ball consistently. Current golf club designs make this difficult because of the distance between the attachment point of the shaft to the club head and the center of the club head. Common problems induced by this current design concept include the inability to align the club along the line of flight, slices or hooks caused by the balls sidewise rotation, inconsistent distance and accuracy, and inconsistency from the rough because of unequal drag between club face and shaft.
  • There are a number of ways to attach a club head to the shaft of a golf club, all of which have been developed over centuries of experience. All have one common and significant defect, in that the shaft is attached so that the axis of the shaft is offset from the center of the club head. The predominant, nearly exclusive, point of attachment of the shaft to club head is at the nearest edge of the head, which creates a lever arm between the pivot point, the attachment point of the shaft to the club, and the point at which the club strikes the ball. This results in inconsistent and sub-optimal performance.
  • SUMMARY
  • A golf club includes a head and a shaft coupled to the head. The shaft is positioned so that an axis of the shaft intersects at or near a center of mass of the head.
  • The details of one or more techniques are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of these techniques will be apparent from the description, drawings, and claims.
  • DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a front view of a golf club.
  • FIG. 2 is a top view of the golf club of FIG. 1.
  • DETAILED DESCRIPTION
  • The present disclosure relates to a range of golf clubs, including woods and hybrid clubs, as defined by the United States Golf Associate (USGA) definitions of these clubs. In the examples described herein, performance improvements are created by constructing or manufacturing the club by attaching the shaft to the club head so that the axis of the shaft, or the centerline of the axis of the shaft, if extended, will pass through or close to a center of the mass and/or geometry of the club head.
  • In this example design, the center of the mass of the club head is at or near the geometric center, and the centerline of the shaft axis passes through the center of mass of the club head for the club. This design can be applied to woods and hybrids and any clubs having the body characteristics of woods, defined by the USGA as a club where the head is relatively broad from face to back, and can be made from a variety of materials.
  • In examples, the shaft is attached to the head by any of a variety of means (epoxy, brazing etc) to allow the shaft axis passes through or near the center of mass of the club head.
  • For example, referring to FIGS. 1 and 2, an example golf club 100 is shown. The golf club 100 is a wood and includes a head 110 and a shaft 120. The shaft 120 is attached to the head at an attachment point 112.
  • In this example, the shaft 120 is positioned so that an axis L running longitudinally through the shaft 120 intersects or passes near a center of mass CM of the head 110. In the example shown, the shaft 120 is positioned at an angle A of 59.5 degrees relative to horizontal, although other angles could be used.
  • In this example, the head 110 of the golf club 100 has a 21 degree loft and weighs 240 grams. The head has a length of 105 mm and a width of 53 mm in one embodiment, and a length of 100 mm and a width of 56 mm in another embodiment. Other example dimensions can include: L1=82 or 86 mm; L2=34 or 32 mm; L3=51 or 50 mm; and L4=7 mm. The attachment point 112 can include an outer diameter of 12.1±0.1 mm, and an inner diameter of 9.5±0.05 mm, and a hold depth of 36±1 mm.
  • These dimensions are examples only. Clubs of different dimensions, such as other woods and hybrid clubs, can be used.
  • In a configuration as described herein, one or more of the following improvements can be realized:
      • (1) the energy from the swing of the club may be transferred to the ball with a minimum of energy loss or direction loss which might otherwise be caused by misalignment, or rotational transfer, and may result in a maximum possible accuracy;
      • (2) the club face is easier to position visually at right angles to the intended line of flight, so that angular errors in alignment due to parallax error may be reduced since the distance from the pivot point to the end of the clubface is reduced; and
      • (3) flight errors such as slices or hooks may be similarly reduced.
  • In addition, the center of mass designed clubs appears to permit controlled draws or fades much more easily than with conventional clubs.
  • Another result of this design is a more accurate shot from a lie where the ball is off the fairway and lying in deep grass. With a conventional club, it can be difficult to strike the ball accurately due to the effect of the grass in producing an unequal moment of torque and unequal drag on the shaft and the face of the club, causing the club to turn as it goes through the grass. The center of mass centered club will minimize these unequal effects, thereby producing a much straighter, more accurate shot.
  • By using woods configured as described herein, it is believed that golfers will be less subject to randomness caused by the variation in torque, drag, parallax errors and other problems.
  • The various embodiments described above are provided by way of illustration only and should not be construed to limiting. Various modifications and changes that may be made to the embodiments described above without departing from the true spirit and scope of the disclosure.

Claims (2)

1. A wood golf club, comprising:
a head; and
a shaft coupled to the head;
wherein the shaft is positioned so that an axis of the shaft intersects a center of mass of the head.
2. The wood golf club of claim 1, wherein the shaft extends at a 59.5 degree angle relative to horizontal.
US12/837,997 2009-07-16 2010-07-16 Mass and/or Geometry Centered Golf Clubs Abandoned US20110014992A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US22606109P true 2009-07-16 2009-07-16
US12/837,997 US20110014992A1 (en) 2009-07-16 2010-07-16 Mass and/or Geometry Centered Golf Clubs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/837,997 US20110014992A1 (en) 2009-07-16 2010-07-16 Mass and/or Geometry Centered Golf Clubs

Publications (1)

Publication Number Publication Date
US20110014992A1 true US20110014992A1 (en) 2011-01-20

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US12/837,997 Abandoned US20110014992A1 (en) 2009-07-16 2010-07-16 Mass and/or Geometry Centered Golf Clubs

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US (1) US20110014992A1 (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110151990A1 (en) * 2009-12-17 2011-06-23 Guerriero Charles P Self aligning golf club
US20110294592A1 (en) * 2010-06-01 2011-12-01 Guerriero Charles P Sweetspot golf club
US20120015756A1 (en) * 2010-07-19 2012-01-19 Milton Thomas Mellon Aerodynamic balanced wood form and/or iron form golf club
US20140162807A1 (en) * 2012-07-06 2014-06-12 Centerline Golf Clubs, Inc. Golf Club
US20140274457A1 (en) * 2002-11-08 2014-09-18 Taylor Made Golf Company, Inc. Golf club with coefficient of restitution feature
US20150335967A1 (en) * 2014-05-20 2015-11-26 Gisle Solhaug Golf Club Head Having Center of Gravity Offset
US9358430B2 (en) 2010-12-31 2016-06-07 Taylor Made Golf Company, Inc. High loft, low center-of-gravity golf club heads
US9623295B2 (en) 2008-07-15 2017-04-18 Taylor Made Golf Company, Inc Aerodynamic golf club head
US9682294B2 (en) 2008-07-15 2017-06-20 Taylor Made Golf Company, Inc. Aerodynamic golf club head
US20170295511A1 (en) * 2014-09-26 2017-10-12 Nokia Technologies Oy Methods and apparatus for minimization of drive testing
US20170303254A1 (en) * 2016-04-15 2017-10-19 Samsung Electronics Co., Ltd. Electronic apparatus and controlling method thereof
US9861864B2 (en) 2013-11-27 2018-01-09 Taylor Made Golf Company, Inc. Golf club
US9950221B2 (en) 2008-07-15 2018-04-24 Taylor Made Golf Company, Inc. Aerodynamic golf club head
US10080934B2 (en) 2002-11-08 2018-09-25 Taylor Made Golf Company, Inc. Golf club with coefficient of restitution feature

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US723534A (en) * 1902-08-26 1903-03-24 Robert H Read Golf-club.
US2926913A (en) * 1955-09-26 1960-03-01 Stecher Karl Golf club
US3368812A (en) * 1964-06-29 1968-02-13 William K. Baldwin Sr. Wood-type golf club with detachable face plate
US3595577A (en) * 1968-07-24 1971-07-27 William R Hodge Golf club
US5199707A (en) * 1992-06-01 1993-04-06 Knox James G Golf club
US5860875A (en) * 1997-11-10 1999-01-19 Mckoon; Carl T. Dual shaft putter
US6024653A (en) * 1998-02-09 2000-02-15 Goodrich; Burton J. Heel-to-toe balanced golf club head
US20040152536A1 (en) * 2003-02-03 2004-08-05 Karsten Manufacturing Corporation Golf club with hosel cavity weight
US20070066419A1 (en) * 2005-09-22 2007-03-22 Matthew Richard G Wood-type golf club
US20070238545A1 (en) * 2006-04-01 2007-10-11 Fountaine Ken C Golf Club Driver
US7281985B2 (en) * 2004-08-24 2007-10-16 Callaway Golf Company Golf club head
US20080280697A1 (en) * 2007-05-10 2008-11-13 George Thomas Manolis Golf club head and shaft assembly
US7722476B2 (en) * 2005-06-10 2010-05-25 Axis1, Llc Golf club
US20110136583A1 (en) * 2007-12-03 2011-06-09 Takayuki Hayashi Twin-axis and head for sports equipment
US20120015756A1 (en) * 2010-07-19 2012-01-19 Milton Thomas Mellon Aerodynamic balanced wood form and/or iron form golf club

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US723534A (en) * 1902-08-26 1903-03-24 Robert H Read Golf-club.
US2926913A (en) * 1955-09-26 1960-03-01 Stecher Karl Golf club
US3368812A (en) * 1964-06-29 1968-02-13 William K. Baldwin Sr. Wood-type golf club with detachable face plate
US3595577A (en) * 1968-07-24 1971-07-27 William R Hodge Golf club
US5199707A (en) * 1992-06-01 1993-04-06 Knox James G Golf club
US5860875A (en) * 1997-11-10 1999-01-19 Mckoon; Carl T. Dual shaft putter
US6024653A (en) * 1998-02-09 2000-02-15 Goodrich; Burton J. Heel-to-toe balanced golf club head
US20040152536A1 (en) * 2003-02-03 2004-08-05 Karsten Manufacturing Corporation Golf club with hosel cavity weight
US7281985B2 (en) * 2004-08-24 2007-10-16 Callaway Golf Company Golf club head
US7722476B2 (en) * 2005-06-10 2010-05-25 Axis1, Llc Golf club
US20070066419A1 (en) * 2005-09-22 2007-03-22 Matthew Richard G Wood-type golf club
US20070238545A1 (en) * 2006-04-01 2007-10-11 Fountaine Ken C Golf Club Driver
US20080280697A1 (en) * 2007-05-10 2008-11-13 George Thomas Manolis Golf club head and shaft assembly
US20110136583A1 (en) * 2007-12-03 2011-06-09 Takayuki Hayashi Twin-axis and head for sports equipment
US20120015756A1 (en) * 2010-07-19 2012-01-19 Milton Thomas Mellon Aerodynamic balanced wood form and/or iron form golf club

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10080934B2 (en) 2002-11-08 2018-09-25 Taylor Made Golf Company, Inc. Golf club with coefficient of restitution feature
US9662545B2 (en) * 2002-11-08 2017-05-30 Taylor Made Golf Company, Inc. Golf club with coefficient of restitution feature
US20140274457A1 (en) * 2002-11-08 2014-09-18 Taylor Made Golf Company, Inc. Golf club with coefficient of restitution feature
US9682294B2 (en) 2008-07-15 2017-06-20 Taylor Made Golf Company, Inc. Aerodynamic golf club head
US10363463B2 (en) 2008-07-15 2019-07-30 Taylor Made Golf Company, Inc. Aerodynamic golf club head
US9950224B2 (en) 2008-07-15 2018-04-24 Taylor Made Golf Company, Inc Aerodynamic golf club head
US9950221B2 (en) 2008-07-15 2018-04-24 Taylor Made Golf Company, Inc. Aerodynamic golf club head
US10391366B2 (en) 2008-07-15 2019-08-27 Taylor Made Golf Company, Inc. Aerodynamic golf club head
US9623295B2 (en) 2008-07-15 2017-04-18 Taylor Made Golf Company, Inc Aerodynamic golf club head
US10052531B2 (en) 2008-07-15 2018-08-21 Taylor Made Golf Company, Inc Aerodynamic golf club head
US20110151990A1 (en) * 2009-12-17 2011-06-23 Guerriero Charles P Self aligning golf club
US20110294592A1 (en) * 2010-06-01 2011-12-01 Guerriero Charles P Sweetspot golf club
US20120015756A1 (en) * 2010-07-19 2012-01-19 Milton Thomas Mellon Aerodynamic balanced wood form and/or iron form golf club
US9358430B2 (en) 2010-12-31 2016-06-07 Taylor Made Golf Company, Inc. High loft, low center-of-gravity golf club heads
US9844708B2 (en) 2010-12-31 2017-12-19 Taylor Made Golf Company, Inc. High loft, low center-of-gravity golf club heads
US10143903B2 (en) 2010-12-31 2018-12-04 Taylor Made Golf Company, Inc. High loft, low center-of-gravity golf club heads
US9144723B2 (en) * 2012-07-06 2015-09-29 Centerline Golf Clubs, Inc. Golf club
US20140162807A1 (en) * 2012-07-06 2014-06-12 Centerline Golf Clubs, Inc. Golf Club
US9861864B2 (en) 2013-11-27 2018-01-09 Taylor Made Golf Company, Inc. Golf club
US10226671B2 (en) 2013-11-27 2019-03-12 Taylor Made Golf Company, Inc. Golf club
US20150335967A1 (en) * 2014-05-20 2015-11-26 Gisle Solhaug Golf Club Head Having Center of Gravity Offset
US20170312599A1 (en) * 2014-05-20 2017-11-02 Gisle Solhaug Golf Club Head Having Center of Gravity Offset
US20170295511A1 (en) * 2014-09-26 2017-10-12 Nokia Technologies Oy Methods and apparatus for minimization of drive testing
US20170303254A1 (en) * 2016-04-15 2017-10-19 Samsung Electronics Co., Ltd. Electronic apparatus and controlling method thereof

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Legal Events

Date Code Title Description
AS Assignment

Owner name: GRAVITY CENTERED GOLF LLC, MINNESOTA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MORRISSEY, JOHN E.;REEL/FRAME:026210/0545

Effective date: 20110502

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION