Classifications

• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
  • A63B57/00—Golfing accessories
  • A63B57/50—Golfing accessories specially adapted for course maintenance

Definitions

• the present invention relates to a device for restoring the grass surface of a golf green, especially repairing said grass surface from marks of golf balls, said device being intended to be mounted m the shaft of a golf club, preferably the putter, and that said device comprises a fork-shaped portion, an intermediate portion and a fastening portion, which is intended to be received within the shaft of said golf club.
• the fastening portion constitutes a cylindrical, slotted portion that is inserted into the hollow shaft of a golf club.
• a part of the grip of flexible material, e.g. rubber, that is attached to the shaft must be cut away m the area of the free end of the shaft m order to allow insertion of the cylindrical portion.
• this fastening portion is relatively flexible due to the slot and furthermore the transition between the fork- shaped portion and the fastening portion has no stabilising function of the device m relation to the shaft of the golf club.
• the fastening portion constitutes a cylindrical tube having a longitudinal, not through going slot.
• Said slot is intended to cooperate with a pm attached to the inner side of the hollow shaft of a golf club, said device may be brought to assume an inactive position when it is m principle completely pushed into the shaft and an active position when its fork-shaped portion extends beyond the end of the shaft. In both these positions the slot cooperates with the internal pm. It is immediately realised that the attachment of said pm brings about a modification of the shaft of the golf club.
• a primary object of the present invention is to present a device of the type defined above, said device being intended to be mounted the shaft of a golf club, preferably a putter, where the mounting of the device according to the present invention may take place without any modification of the shaft of the golf club, including also the grip of flexible material.
• a further object of the invention is that an extremely firm fastening of the device m said shaft is achieved.
• the fastening portion consists of a means having such a shape that when mounted mside a hollow shaft of a golf club it contacts the inner side of said shaft m at least two spots or by line contact.
• Figure 1 shows a side view of a putter, which a device according to the present invention is mounted;
• Figure 2 shows m a larger scale a partly sectioned side view of the upper part of the shaft of the golf club according to figure 1;
• Figure 3 shows a partly sectioned side view of the corresponding part as figure 2, however, the side view being rotated 90° compared to the side view of figure 2;
• Figure 4 shows a side view of an alternative embodiment of a device according to the present invention;
• Figure 5 shows a side view of a further alternative embodiment of a device according to the present invention.
• a flexible material e.g. rubber
• both the shaft 5 and the grip 7 have circular cross-section.
• said grip 7 is provided with a preferably circular hole 9 at the end adjacent to the free end of the shaft 5. Said hole 9 facilitates the mounting of the grip 7 on the shaft 5, i.e. displaced air may flow out through said hole 9 m connection with the mounting of the grip 7.
• FIGS 1-3 it is shown how a device 10 according to the present invention is mounted m a putter 1.
• the device 10 according to the present invention comprises a fork-shaped portion 11, an intermediate portion 12, m the shape of a collar, and a fastening portion 13 that generally seen is threadlike m order to enable mounting of the fastening portion through the hole 9, the diameter of the hole 9 should to a reasonable degree be adapted to the diameter of the threadlike fastening portion 13.
• the threadlike fastening portion 13 is inserted through the hole 9 until the position shown m figures 2 and 3 has been achieved, i.e. the collar 12 abuts the free end of the grip 7.
• the threadlike fastening portion 13 is essentially linear m the view shown m figure 2 while said fastening portion 13 has a wave-like portion 14 m the view shown m figure 3. It is evident from both figures 2 and 3 that the fastening portion 13 has a straight portion 15 located closest to the collar 12, said portion 15 being provided with a bead 16 that mounted position of the device according to the present invention is located directly inside the hole 9 of the grip 7.
• the wavelike portion 14 joins the straight portion 15, said wave-like portion 14 being sinusoidal m the disclosed embodiment.
• the fastening element 14 has a linear shape m a plane perpendicular to the paper in figure 2 and is sinusoidal in a plane perpendicular to the plane of the paper in figure 3, said planes being essentially perpendicular to each other.
• the diameter of the hole 9 is essentially smaller than the internal diameter of the shaft 5.
• the structural design of the fastening portion 13 enables mounting of the device 10 according to the present invention without a permanent enlargement of the diameter of the hole 9. Since the grip 7 normally is manufactured from flexible material a certain enlargement of the diameter of the hole 9 may occur, especially during mounting and dismounting of the device 10 according to the present invention.
• the device according to the present invention is rigid in a direction parallel to the plane of the paper in figure 3 is extremely important when considering the forces acting upon the device according to the present invention, when said device is in active position.
• said active position the fork-shaped portion 11 is inserted into the ground, normally the lawn of a green, next to a mark from a golf ball and the shaft 5 is essentially vertical. Then the free end of the shaft 5 is tilted downwards in direction to the ground in order to elevate the area of the mark.
• the fastening portion 13 will be subjected to substantial forces, especially if the ground is hard, in the plane that is parallel to the paper in figure 3, i.e.
• the collar 12 of the device 10 according to the present invention contributes of course in absorbing the forces due to the fact that the collar 12 abuts the free end of the grip 7.
• Figures 4 and 5 show two alternative embodiments of the device 10' and 10" respectively according to the present invention to restore the grass surface of a golf green. It is common for both devices 10' and 10" that the fastening portion 13' and 13" respectively is helicoidal, and that the fork- shaped portion 11' and 11" respectively and the collar 12' and 12" respectively have principally the same design. Both devices 10' and 10" are also provided with a straight portion 15' and 15" respectively between the collar 12' and 12" respectively and the helicoidal fastening portion 13' and 13" respectively. The straight portion 15' and 15" is provided with a bead 16' and 16" respectively. In the embodiment according to figure 4 a further portion is provided between the fork-shaped portion 11' and the collar 12', said portion may for instance be used for advertising purposes.
• the mounting of the devices 10' and 10" is effected in principally the same way as has been described above in connection with the embodiment according to figures 1-3, i.e. the fastening portion 13' and 13" respectively is screwed/inserted through the hole in the grip.
• the device 10' and 10" may be pushed to its final position, i.e. when the collar 12' and 12" respectively abuts the end of the grip.
• the screw-shaped fastening portion 13' and 13" respectively will come into contact with the inner wall of the shaft, whereby a firm fastening of the device 10' and 10" respectively is achieved.
• the device 10' and 10" respectively has a uniformly firm fastening in all directions .
• the diameter of the hole in the grip is essentially smaller than the internal diameter of the shaft, in which the fastening portion 13'; 13" is received.
• the fastening portion 13; 13'; 13" comprises a thread-shaped portion, which is designed in such a way that it defines an external cross dimension that is larger than the cross dimension of the thread shaped-portion itself.
• external cross dimension it should be understood the cross dimension that in principle corresponds to the internal diameter of the shaft 5.
• the cross dimension of the thread- shaped portion should generally correspond with the diameter of the hole 9.
• the thread-shaped portion may be inserted through the hole 9 when the device 10; 10'; 10" according to the present invention is mounted.
• the diameter of the hole 9 may be somewhat smaller than the diameter of the thread- shaped portion, i.e. the thread shaped portion widens the hole 9 somewhat in connection with mounting and dismounting of the device 10; 10'; 10" according to the present invention.
• the grip 7 or the adherent hole 9 in no way is subjected to any damage.

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

Applications Claiming Priority (3)

Publications (1)

Family

ID=20415013

Family Applications (1)

Country Status (4)

Families Citing this family (3)

Family Cites Families (5)

• 1999
  • 1999-03-25 SE SE9901106A patent/SE514033C2/sv not_active IP Right Cessation
• 2000
  • 2000-03-21 WO PCT/SE2000/000546 patent/WO2000057964A1/en active Search and Examination
  • 2000-03-21 EP EP00921225A patent/EP1163031A1/en not_active Withdrawn
  • 2000-03-21 AU AU41565/00A patent/AU4156500A/en not_active Abandoned

Non-Patent Citations (1)

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