Games using tangible projectile – Bowling – Ball
Patent
1995-02-21
1996-09-17
Pierce, William M.
Games using tangible projectile
Bowling
Ball
273 58B, 273 58K, 473378, A63B 3714, A63B 3908
Patent
active
055563422
DESCRIPTION:
BRIEF SUMMARY
The subject of the present invention is a bowl for games of bowls, which can be used for the games of bowls, in which, especially, a bowl is rolled along the ground, for example the Provencal bowl, the Lyons bowl, the Italian bowl and, more particularly, the petanque bowl; the subject of the invention is also processes for obtaining such a bowl.
It is known that, in the aforementioned games of bowls, the player seeks a bowl which has as small as possible a rebound when it strikes another bowl and which, also, is barely deflected when it touches the ground and when it follows as best it can the trajectory that he desires; he also wishes for it not to be deflected by asperities on the ground when it rolls along it, nor braked when it rolls along the ground; the player also wishes for the bowl to be able to be well gripped in the hand and to be pleasant to touch.
In the case of the game of petanque, the "pointer", who seeks to place his bowl as close as possible to the "jack", desires to control the trajectory of his bowl and wishes for his bowl not to be deflected on impact with the ground, or by an asperity on the ground, when it rolls along it. The "shooter" wishes for his bowl to recoil as little as possible under the effect of the shock when his bowl strikes the bowl of an opponent, so as to make what is called "a strike dead on the spot".
Currently in petanque, the "pointer" and the "shooter" use different hollow metal bowls: the "pointer" uses hard bowls of relatively small diameter, often equipped on their surface with groups of circular, parallel or orthogonal grooves which enable the bowl to brake when it rolls along the ground; the "shooter" generally uses bowls of lower hardness, called "softs", and of larger diameter so as to diminish the rebound phenomenon on impact of his bowl with another bowl; however, in practice, it is difficult to obtain bowls having a sufficiently low rebound, and giving satisfaction, since such bowls have too low a hardness and are, after a short period of use, marked and deformed, which leads to them having a random behavior. It is therefore particularly advantageous to seek to produce bowls having a small rebound, to within one diameter, which can be used both by the "shooter" and by the "pointer". The jack is generally formed by a solid bowl made of boxwood or other wood or made of a plastic of the same density, and the surface of the bowl is smooth. On impact with a bowl, the "jack" tends to rebound and to roll along the ground in a random fashion since it is not braked.
In order to limit the rebound phenomenon of a hollow metal petanque bowl, it was proposed in FR-A-2,638,375 to machine, on the internal surface of the two hemispherical shells forming the bowl after assembly, serrations constituting either a system of circles which are parallel to each other or two systems of circles which are orthogonal at the points of intersection, in a manner similar to the lines of latitude and longitude on the Earth. However, this mode of construction does not enable the rebound to be limited in a sufficiently homogeneous manner. In fact, since the thickness of the wall is reduced in the region of the serrations, the rebound is limited when the impact takes place in this region. However, zones remain where the thickness of the bowl is not altered and there is no obstacle to propagation of the shock wave in the material of which the bowl is composed; the rebound therefore remains significant and the behavior of the bowl to the shock remains random.
Moreover, it is known to arrange serrations on the external surface of the bowl in order to brake it and to increase its adhesion to the ground. However, serrations arranged on the bowl run the risk of permitting penetration of an asperity from the pitch into the said serration and, consequently, an unexpected deflection of the bowl.
In French Patent Applications 90/13030 filed on 22nd Oct. 1990 and 90/16538 filed on 31st Dec. 1990, the applicant has proposed a bowl, in particular a hollow metal bowl, which includes, possibly, indenta
REFERENCES:
patent: 426120 (1890-04-01), Furman
patent: 1855448 (1932-04-01), Hazeltine
patent: 4248424 (1981-02-01), Judkins
LandOfFree
Ball having surface indentations for games of bowls and processe does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ball having surface indentations for games of bowls and processe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ball having surface indentations for games of bowls and processe will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-409787