| 摘要 |
A metering valve assembly for use in connection with a tool stem (128) of a fastener-driving tool for dispensing a pre-determined amount of fuel to be injected into the tool combustion chamber. The metering valve assembly (124) comprises a metering valve for dispensing a pre-determined amount of fuel to be injected into a combustion chamber of a tool, a metering valve stem (126) fixedly mounted upon the metering valve for cooperating with a tool stem (128) in order to define a fluid flow path from the metering valve toward the combustion chamber of the tool, and an elastomeric adaptor (164) mounted upon the metering valve stem so as to be disposed in sealed engagement with the tool stem of the tool and thereby define a sealed fluid flow path leading from the metering valve toward the combustion chamber of the tool.
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