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US 8,979,680 B2Granted
Surface marking system for competitive throwing and training
AssigneesLawrence Joseph (Joey) Hudack, III, Dawn R. Hudack
InventorLawrence Joseph Hudack, III
Life of this patent
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Abstract
A marking system for use with competitively thrown objects such as discuses, shot puts, hammers and javelins. The marking system has a cavity which contains a marking agent which is automatically deposited from the cavity onto the ground when the thrown object hits the ground. Other embodiments are describes and shown.
Claims15
A marking discus comprising:
- a discus body;
- the discus body having at least one cavity within the discuss body;
- the discus further having at least one cap portion, and a marking agent disposed inside the at least one cavity wherein;
- the at least one cavity is in external communication with the periphery of the body whereby;
- the at least one cap portion permits transfer of the marking agent from within the at least one cavity to a space external to a rim or the body of the discus and to a top or a bottom surface of the discus upon impact of the marking discus with another object.
2 more elements
A marking shot put comprising:
- a shot put body;
- the shot put body having at least one cavity within the shot put body;
- the shot put body further having at least one cap portion and a marking agent disposed inside the at least one cavity wherein;
- the at least one cavity is in external communication with the periphery of the body whereby;
- the at least one cap portion permits transfer of the marking agent from within the at least one cavity to a space external to a rim or the body of the shot put and to a top or a bottom surface of the discuss upon impact of the marking discuss with another object.
2 more elements
A javelin comprising:
- a javelin body;
- the javelin body having at least one cavity within the javelin body;
- the javelin body further having at least one cap portion and a marking agent disposed inside the at least one cavity wherein;
- the at least one cavity is in external communication with the periphery of the body whereby;
- the at least one cap portion permits transfer of the marking agent from within the at least one cavity to a space external to a rim or the body of the javelin and to a top or a bottom surface of the discuss upon impact of the marking discuss with another object.
2 more elements
Dependencies are inferred from the claim text.