US 6,267,161 B1Granted

Carbon-dioxide pump for tires

AssigneeBarbieri S.n.c. di Barbieri Nadia e Kalman

InventorAdriano Barbieri

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Abstract

A carbon-dioxide pump for tires which comprises a dispensing head which is provided with a nosepiece for coupling to the tire valve which is connected to a threaded hole for the hermetic fixing of a bottle of carbon dioxide and to a sliding hole for a needle-equipped pin for piercing the membrane of the bottle which is rigidly coupled to a flow control element of the frustum-shaped type which can be actuated manually so as to rotate in order to hermetically close the bottle after piercing the membrane, a shell for containing the bottle which is screwed hermetically onto the head and on which a handgrip is slidingly fitted with the interposition of guiding and sliding sealing elements which are suitable to provide a short manual pump in which the air compressed by the movement of the handgrip flows between the shell and the bottle and is fed to the nosepiece through a nozzle which is closed by a valve system provided in the head.

Claims7

Dependent claims

A carbon-dioxide pump for tires connectable to a carbon dioxide bottle, comprising:

a dispensing head;
a nosepiece, located at said dispensing head, for coupling to a tire valve;
a threaded hole, connected to said nosepiece, to which the bottle of carbon dioxide is hermetically fixable;
a sliding hole connected to said threaded hole;
a needle-equipped pin slideable in said sliding hole for piercing a membrane of the bottle;
a flow control element of a frustum-shaped type which is manually actuatable so as to rotate in order to hermetically close said bottle after piercing said membrane, said flow control element being rigidly coupled to said pin;
a shell for containing said bottle which is screwed hermetically onto said head;
a handgrip slidingly fitted on said shell;
a nozzle provided in said head;
a valve system for closing said nozzle;
and guiding and sliding sealing elements interposed between said shell and said handgrip for providing a short manual pump arrangement in which air compressed by movement of the handgrip with respect to said shell flows between the shell and the bottle and is fed to said nosepiece through said nozzle which is closed by said valve system provided in the head.

8 more elements

Dependencies are inferred from the claim text.