PNEUMATICALLY OPERABLE FASTENER-DRIVING TOOL AND SEAL MECHANISM ASSEMBLY, AND A METHOD OF OPERATING THE SAME

摘要

A pneumatically operable fastener driving tool and seal mechanism assembly (110), and a method of operating the same, comprises the use of a single, annular seal member (132), having a substantially V-shaped cross-sectional configuration, disposed within annually recessed portion of the fastener driving tool piston (114) in such a manner That the open region of the V-shaped annular seal member (132) is disposed towards the relatively high pressure upstream end portion of the fastener driving tool cylinder (112).