CONTENITORE IPERBARICO ATTO A MANTENERE O NORMALIZZARE LA PRESSIONE INTERNA DELLE PALLE DA TENNIS

The internal pressure of tennis balls tends to diminish over time and with use, because of the permeability of the rubber wall. The present invention consists of an airtight container, provided with a valve for inlet/outlet of compressed air, and a safety valve. By placing the tennis balls in the co...

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Bibliographische Detailangaben
Hauptverfasser:	BONZI MAURIZIO, MORASSI ROBERTO
Format:	Patent
Sprache:	ita
Schlagworte:	AMUSEMENTS APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING,CLIMBING, OR FENCING BALL GAMES GAMES HUMAN NECESSITIES SPORTS TRAINING EQUIPMENT
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Beschreibung
Zusammenfassung:	The internal pressure of tennis balls tends to diminish over time and with use, because of the permeability of the rubber wall. The present invention consists of an airtight container, provided with a valve for inlet/outlet of compressed air, and a safety valve. By placing the tennis balls in the container and producing an appropriate pressurisation, it is possible to maintain or normalise the internal pressure of the balls to an optimal value, exploiting the diffusion of air produced by the pressure difference.