U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Did You Know...

...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!

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Class 473/358 - Hollow core


Subclass of Class 473 - Games using tangible projectile
Definition: Subject matter wherein the innermost spherical portion is
No. of patents: 16
Last issue date: 05/09/2006


NumberTitleIssue Date
7041007Method for making multilayer golf ball
The present invention encompasses a golf ball having a diameter and being comprised of a core and a cover, wherein the core is further comprised of a fluid mass at the center of the ball, a first mantle layer surrounding the fluid mass and a second, solid, non-wound...
05/09/2006
7029405Multi-layer, wound golf ball
A multi-layer golf ball can be prepared, possessing the performance characteristics of both a solid ball and a wound ball, by selecting the content and thickness of one or more of the layers, wherein the multi-layer golf ball comprises a center, an intermediate laye...
04/18/2006
7017912Aquatic amusing toy
An aquatic amusing toy is adapted for an aquatic game combining dive and amusement and includes a holding element and at least a sinking object. The holding element has a holding portion and a hollow portion defining an opening therein. In an aquatic game, the sinki...
03/28/2006
6993435Method and device for the automatic determination of the diameter of a round disk-like tool driven by a motor
For the automatic determination of the diameter of a tool, particularly a saw blade for an automatic wall saw, which is driven by a motor via a gear unit, the moment of inertia of the tool is used as an indicator for its diameter. Three basic solution variants are i...
01/31/2006
6840772Method for the impact or shot evaluation in a shooting range and shooting range
The invention relates to a method for evaluating electronic impacts or shots of fired shots in a shooting range for sportsmen and for hunter training. The target to be shot at is provided as a light spot and is projected onto a target wall (1) via a light sou...
01/11/2005
6561924Four piece golf ball
A four-piece golf ball is disclosed herein. The golf ball has a core with an oxygen barrier boundary layer, a wound layer and a polyurethane cover. The core is preferably composed of polybutadiene material. The boundary layer is preferably composed of a b...
05/13/2003
6544130Practice golf ball device and its associated method of manufacture
A practice golf ball and its associated method of manufacture is claimed. The practice golf ball includes a hollow inner shell made of inexpensive molded plastic. The inner shell is molded so that the outer surface of the inner shell contains a dimple pat...
04/08/2003
6435986Golf ball comprising water resistant polyurethane elastomers and methods of making the same
The invention provides a golf ball having a cover, intermediate layers and/or a core comprising in whole or in part of water resistant polyurethane elastomers. The polyurethane elastomers may be blended with conventional materials employed to form golf ba...
08/20/2002
6379266Four piece golf ball
A four-piece golf ball is disclosed herein. The golf ball has a core with an oxygen barrier boundary layer, a wound layer and a polyurethane cover. The core is preferably composed of polybutadiene material. The boundary layer is preferably composed of a b...
04/30/2002
6315683Hollow solid golf ball
The present invention provides a hollow solid golf ball having excellent flight performance and soft and good shot feel at the time of hitting. The present invention relates to a hollow solid golf ball comprising a core having a hollow portion at the cent...
11/13/2001
6309312Golf ball comprising a metal mantle having a hollow interior
A unique golf ball and related methods of manufacturing are disclosed in which the golf ball comprises one or more metal mantle layers that define a hollow interior within the ball. The golf ball may also comprise an optional polymeric hollow spherical su...
10/30/2001
6200231Hollow solid golf ball
A hollow golf ball comprising a hollow core and a cover layer that possesses good shot feel, an increased moment of inertia, and a high launch angle at the time of hitting. Immediately after impact, the hollow golf ball has a small spin amount. The specif...
03/13/2001
6193619Golf balls having inner layers formed with cationic ionomers
This invention relates to methods of using cationic ionomers in the composition of inner layers of golf balls. Further, this invention relates to golf balls comprising one or more inner layers and which incorporate polyurethane or polyurea ionomers. The g...
02/27/2001
6120390Golf ball cores with improved durability
The present invention is directed toward more durable golf ball cores and more durable golf balls. The golf balls of this invention comprise a cover and a core wherein the core may further comprise a center and one or more layers of a mantle disposed betw...
09/19/2000
5836831Golf ball
The present invention is directed towards the novel use of polyether-amide block copolymer to form center core shells for use in liquid filled golf balls. Wound golf balls of the present invention which employ liquid filled centers formed from polyether-a...
11/17/1998
5605512Golf ball
It is a main object of the present invention to impart a high impact resilience to a thread wound golf ball using a liquid center wherein a center bag is filled with a liquid, thereby improving a flying distance, while maintaining a good hit feeling and c...
02/25/1997
 
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