WO2006037980A1 - Dispositif de sport - Google Patents

Dispositif de sport Download PDF

Info

Publication number
WO2006037980A1
WO2006037980A1 PCT/GB2005/003792 GB2005003792W WO2006037980A1 WO 2006037980 A1 WO2006037980 A1 WO 2006037980A1 GB 2005003792 W GB2005003792 W GB 2005003792W WO 2006037980 A1 WO2006037980 A1 WO 2006037980A1
Authority
WO
WIPO (PCT)
Prior art keywords
connector
handle
head
club
threaded portion
Prior art date
Application number
PCT/GB2005/003792
Other languages
English (en)
Inventor
Graham Parks
Derek Biddulph
Kim Mcloughlin
Original Assignee
Key Connect Limited
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 claimed from GB0421862A external-priority patent/GB2418621A/en
Application filed by Key Connect Limited filed Critical Key Connect Limited
Publication of WO2006037980A1 publication Critical patent/WO2006037980A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B55/00—Bags for golf clubs; Stands for golf clubs for use on the course; Wheeled carriers specially adapted for golf bags
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/005—Club sets
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B55/00—Bags for golf clubs; Stands for golf clubs for use on the course; Wheeled carriers specially adapted for golf bags
    • A63B55/40—Bags with partitions or club holders
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B55/00—Bags for golf clubs; Stands for golf clubs for use on the course; Wheeled carriers specially adapted for golf bags
    • A63B55/408—Releasably mounted accessories fitted outside the bag, e.g. straps or holders
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2210/00—Space saving
    • A63B2210/50—Size reducing arrangements for stowing or transport

Definitions

  • the present invention relates to a two part golf club and a bag for accommodating a set of two part golf clubs .
  • golf clubs with interchangeable heads. These golf clubs are formed from two parts, a handle part and a head part. Typically, a set of such golf clubs will comprise a single handle part which can be connected to any one of a plurality of head parts, each head part having different properties such as loft angle or length of shaft. In this way the user can carry a range of different clubs with significantly reduced weight and bulk. Any of the standard golf club heads (woods, irons, wedges, putters, etc.) can be included in the set. Such sets of two piece golf clubs are typically accompanied by a golf bag which is similarly reduced in size and weight.
  • US 4,340,227, US 3,829,092 and US 3,848,737 show examples of previous two piece golf sets.
  • US 4,340,227 shows a two piece club with a handle part and interchangeable head parts that can be screwed onto the handle part.
  • US 3,829,092 shows a telescopic handle which is clipped into the chosen head and US 3,484,737 shows a handle which is screwed onto the chosen head.
  • a hollow shaft is fitted with a grip at the handle end and a club head is fixed to the other end.
  • the club head is typically fixed to the shaft using a two part adhesive.
  • the two parts of the adhesive are mixed together and then the mixture is applied to the inside of a receiving chamber in the head and to the outside of the shaft of the club.
  • the shaft is then inserted into the receiving chamber and the two par ⁇ ts of the adhesive react to form a bond between the club b_ead and the shaft.
  • This pressure can slowly push the connector part out of the shaft by as much as 2-3 millimetres before the adhesive has set, thereby weakening the connection between the club parts and changing the length and balance of the club. Also, before the adhesive bond has solidified, aiar bubbles can be forced into the adhesive, weakening the bond and resulting in a club which is susceptible to breaking in use through adhesive bond failure.
  • the female connector part is provided with a bore which extends through the whole connector part, this goes some way towards relieving the problem of pxessure build up behind the connector part.
  • air bubbles can still exist in the adhesive 'and if these do not escape before the adhesive sets, the resulting bond, is not strong enough.
  • the preserxt invention provides a golf club comprising a handle part having a handle and a hollow shaft extending therefrom, a head part having a club head and a hollow shaft extendi_ng therefrom and a connector for removably connecting the shaft of the handle part to the shaft of the head part, wherein: the connector comprises a first part fixed into the handle part of the club and a second part fixed into the head part of the club; and at least one of the connector parts is formed with an axially extending passage formed on the outside of the connector part communicating one axial end thereof to the other axial end thereof.
  • the passage When the parts of the connector are fitted into the respective shafts of the two club parts, air can pass from the hollow shaft cavity to the outside through the passage so that there is no increased pressure within the club parts.
  • the passage tends to equalise the pressure at the opposite ends of the connector. Accordingly, there is no force biasing the connector parts out of the shafts.
  • the passage provides an escape path for air bubbles within the adhesive which bonds the connector parts to the shafts. As these air bubbles can escape, a more uniform and a stronger connection is thus obtained.
  • the passage can be formed on the first connector part, on "the second connector part or on both connector parts .
  • the club head closes one end of the hollow shaft. This is what causes the pressure build up if there is no passage formed in the connector part. If the handle part is provided with a grip which does not close the end of tlie hollow shaft of the handle part, then there will be no need for a passage to be formed in the handle connector part. However, some designs of handle are closed at one end. It is then beneficial for a passage to be formed on the first connector part.
  • the passage is preferably provided by an axially extending flat portion formed on the outside of the connector part. This allows escape of air locally to where an adhesive bond is normally formed. Such a flat portion can easily be machined into the side of a connector part during the manufacturing process. More than one flat portion may be provided on a connector part e.g. two diametrically opposed flat portions.
  • the connector parts are fixed into the handle part and the head part by adhesive.
  • one of the connector parts has an externally threaded portion which extends axially from a shoulder
  • the other of the connector parts has an internally threaded portion which extends axially inwardly from an end abutment.
  • the internally threaded portion is axially spaced from the end abutment.
  • the internally threaded portion may be axially spaced from the end abutment by a region of greater radius than the internally threaded portion.
  • the region of greater radius slopes outwardly from the internally threaded portion towards the end abutment.
  • the externally threaded portion may further comprise a locating portion extending axially from the threaded portion and the internally threaded portion may further comprise a locating recess extending axially inwardly from the internally threaded portion.
  • the first and second connector parts are made from, titanium.
  • connections based on a screw fit it is imperative to get a tight fit between the two parts .
  • Such connections typically comprise a threaded male part and an internally threaded female part. Both parts also comprise flat surfaces which abut against each other when the parts are screwed together.
  • the present invention provides a golf club comprising a handle part having a handle and a shaft extending axially therefrom, a head part having a club head and a shaft extending axially therefrom, the handle part and the head part being removably connected to each other, one of the connector parts having an externally threaded portion which extends axially from a shoulder, the other of the connector parts having an internally threaded portion which extends axially inwardly from an end abutment, wherein the internally threaded portion is axially spaced from the end abutment .
  • the internally threaded portion is axially spaced from the end abutment by a region of greater radius than the internally threaded portion. This provides a region in which dirt pushed out from between the threads during mating can collect, rather than being deposited directly between the shoulder and the end abutment. This is an important benefit in that golf is an outdoor game where the club parts will be exposed to dirt and the like, for example the sand of golf course bunkers.
  • the region of greater radius may have the same radius over its axial extent.
  • the region of greater radius slopes outwardly from the internally threaded portion towards the end abutment.
  • This arrangement avoids sharp corners which would create a weakness, particularly having regard to the bending loads applied to golf clubs. It also strengthens the connection by maintaining a greater quantity of material adjacent to the internally threaded portion.
  • the externally threaded portion further comprises a locating portion extending axially from the threaded portion and the internally threaded portion further comprises a locating recess extending axially inwardly from the internally threaded portion.
  • the locating portion is located in the locating recess thereby helping to align the threads and providing further stability to the connector. It is preferred that the externally threaded portion is on the handle part and the internally threaded portion is in the head part.
  • the externally threaded portion and shoulder are formed on a first connector part and the internally threaded portion and the end abutment are formed on a second connector part, the first and second connector parts being fixed into respective axial cavities of the handle part and the head part.
  • the first and second connector parts are made from titanium. More preferably grade 5 titanium is used as this is very strong and resists shock impacts, general wear and corrosion. Previous connectors have been made from stainless steel which is 45% heavier than titanium and not as strong.
  • connection is located close to the centre of gravity of the club. In this position the connection has least influence on the feel and flex of the club and therefore makes the club act and feel more like a single piece club.
  • the screw thread of the connection is preferably such that the connector tightens upon swing/impact. If the thread was the other way round, there would be a tendency for the connection to undo itself during the swing or upon impact which would have a detrimental effect on the clubs performance. Thus for a set of right-handed clubs the externally threaded portion screws anti-clockwise into the internally threaded portion, and vice-versa for a set of left-handed clubs. It is also preferred that the shaft of the head part has a length dependent upon the club head. This is so that the various club heads, when connected to the handle part, will form a golf club of the correct standard length. For example a driver is normally longer than the irons and therefore, a driver club head part will preferably be provided with a longer shaft than those of the irons .
  • a set of two piece golf clubs necessarily requires a lot less storage space than a full set of golf clubs.
  • a bag for storing and transporting the clubs can have a main pocket sized to hold the head parts, and a separate pocket sized to hold the handle part.
  • the overall volume of the bag is reduced.
  • An example of such a bag is that shown in US 4,340,227. This bag has a pocket attached to the side of the bag into which the handle part can be slotted. However, this pocket would provide little protection for the handle part during transport in a car or an airplane. To provide such protection, it is desirable to provide a pocket the full length of the handle part.
  • this pocket will be significantly longer than the main pocket which houses the head parts and therefore adds to the overall bulk of the bag.
  • the present invention provides a golf bag for a set of two piece golf clubs of the type which comprises a handle part having a handle and a shaft extending therefrom and a plurality of head parts each having a club head with a shaft extending therefrom, the bag comprising a main compartment for accommodating the head parts and a handle compartment for accommodating the handle part, wherein the handle compartment is removably attached to the main compartment.
  • Such a bag with a detachable pocket is particularly advantageous because the handle compartment can be detached from the main compartment when the clubs need to be transported in a confined space such as a boot or in an airplane cargo hold, but can be attached to the main pocket for convenience when carrying the bag on the golf course .
  • Different golf clubs have different lengths according to the purpose of the club. For example a 9- iron is shorter than a 3-iron which m turn is shorter than a. driver. Accordingly, in a set of two part clubs which comprises a handle part and a plurality of head parts r each head part needs to be provided with a different length of shaft for attachment to the handle part. Thus when a head part is connected to the handle part, the resulting club is of the correct overall length..
  • the present invention provides a golf bag for a set of two piece golf clubs of the type which comprises a handle part having a handle and a shaft extending therefrom and a plurality of head parts each having a club head with a shaft extending therefrom and having a length dependent upon the club head attached thereto, the golf bag comprising a storage region for receiving the head parts, wherein the bottom of the storage region is formed with a slope relative to the top of this storage region such that the height of the storage region at the bottom of the slope corresponds to the length of the longest head part and the height of the storage region at the top of the slope corresponds to the length of the shortest head part.
  • This design of bag takes up less room and weighs less than a conventional cylindrical bag. Such efficiency of space and weight are useful when the clubs need to be transported in aircraft and for older golfers who iaa.y prefer not to carry a standard sized set.
  • the storage region for receiving the head parts may comprise a single compartment or a series of individual compartments.
  • the sloping bottom of the storage region may be smoothly sloping or it may be in the from of a stepped slope.
  • a preferred golf bag further comprises a separate pocket for the handle part.
  • a separate handle pocket helps to reduce the size of the bag as the handle is normally substantially longer than the club head parts.
  • the main compartment can be sized so as to accommodate the smaller head parts and the handle pocket can be sized so as to accommodate the longer handle part. In this way the overall size and weight of the grolf bag can be minimised.
  • the handle pocket zLs removably attached to the golf bag. This allows the user to detach the handle pocket when transporting trie bag in restricted luggage compartments such as the boot of a car or the cargo bay of an aircraft.
  • the bag further comprises a pocket with a sloping roof underneath the main compartment such that the bag has a substantially uniform height.
  • Figure 1 is an exploded view of a two piece golf club according to the present invention
  • Figure 2 is a longitudinal cross-section of a connector used for connecting the two parts of the golf club as shown in Figure 1;
  • Figure 3 is an end. view of an internally threaded connector part looking from the abutment surface towards the locating portion;
  • Figure 1 shows a two part golf club 1 having a handle part 2 and a head part 3.
  • the handle part has a grip fixed to the upper end thereof (not shown) and the head part has a golf club head attached at the bottom end thereof (also not shown) .
  • the golf club is connected together by means of a male connector part 4 which is fixed into the hollow shaft of the handle part 2 and a female connector part 5 which is fixed into the hollow shaft of the head part 3.
  • Flats 13 provide passages for air within the shafts 2 and 3 and air bubbles within the adhesive to escape when the connector parts 4 and 5 are inserted into the shafts.
  • the male and female connector parts are shown in greater detail in cross-section in Figure 2.
  • the connector parts are shown in a partially mated condition.
  • the male connector part 4 is fixed into the handle part 2.
  • the female connector part 5 is likewise fixed into the head part 3.
  • the flat 13 is not shown in this figure.
  • Figure 6 shows an insert which can be provided inside the mam compartment to separate the club head parts. This helps to stop the head parts from knocking against each other during storage or transport, and assists the golfer m keeping his or her clubs m good, order.
  • the holes for the wood head parts are at one side of the insert (the three holes around the indication "W"), and the holes for the putter, pitching wedge and sand wedge head parts ("P", "P” and. "S") are at the other side of the insert, with the holes for the 3 to 9 iron head parts being at intermediate positions .

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Golf Clubs (AREA)

Abstract

L'invention concerne un sac pour club de golf qui comprend une partie poignée composée d'une poignée traversée par une tige creuse, une partie tête composée d'une tête de club traversée par une tige creuse ainsi qu'une pièce de jonction qui relie amovible la tige de la partie poignée à la tige de la partie tête. La pièce de jonction comprend une première partie fixée dans la partie poignée du club et une seconde partie fixée dans la partie tête du club; au moins l'une des parties de la pièce de jonction comportant extérieurement un passage axial formé pour relier une première extrémité axiale de celle-ci à son autre extrémité axiale.
PCT/GB2005/003792 2004-10-01 2005-09-30 Dispositif de sport WO2006037980A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0421862.4 2004-10-01
GB0421862A GB2418621A (en) 2004-10-01 2004-10-01 Golf shaft connector
US69653105P 2005-07-06 2005-07-06
US60/696,531 2005-07-06

Publications (1)

Publication Number Publication Date
WO2006037980A1 true WO2006037980A1 (fr) 2006-04-13

Family

ID=35207715

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2005/003792 WO2006037980A1 (fr) 2004-10-01 2005-09-30 Dispositif de sport

Country Status (1)

Country Link
WO (1) WO2006037980A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014106133A1 (fr) * 2012-12-28 2014-07-03 Brady Patrick K Système pour clubs de golf avec sac de golf

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4340227A (en) * 1980-12-01 1982-07-20 B.P.A. Enterprises, Inc. Golf club set and carrying case
GB2324473A (en) * 1997-04-25 1998-10-28 Raymond Mcmahon Two piece travelling golf club
US20030050132A1 (en) * 2000-09-05 2003-03-13 Wilbur Kurt C. Separable-shaft golf club
US20030181255A1 (en) * 2001-12-07 2003-09-25 Ho Yang Ching Replaceable golf club

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4340227A (en) * 1980-12-01 1982-07-20 B.P.A. Enterprises, Inc. Golf club set and carrying case
GB2324473A (en) * 1997-04-25 1998-10-28 Raymond Mcmahon Two piece travelling golf club
US20030050132A1 (en) * 2000-09-05 2003-03-13 Wilbur Kurt C. Separable-shaft golf club
US20030181255A1 (en) * 2001-12-07 2003-09-25 Ho Yang Ching Replaceable golf club

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014106133A1 (fr) * 2012-12-28 2014-07-03 Brady Patrick K Système pour clubs de golf avec sac de golf

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