Patent ID: 7784560

Claim:
A cap assembly for a fastener-driving tool having a working piston, disposed within a piston-cylinder chamber, for discharging a fastener from the fastener-driving tool when the working piston is subjected to actuating air, comprising: a cap member; a plurality of fluid ports defined within said cap member for permitting actuating air to be conducted toward the working piston of the fastener-driving tool in order to actuate the working piston; fasteners for securing said cap member upon the fastener-driving tool; a spool valve reciprocally movable within said cap member between first and second positions so as to permit said plurality of fluid ports to be fluidically connected in a predetermined manner so as to permit the fastener driving tool to be operated within two different modes of operation; and a switch mechanism incorporated within said cap member, and movable between first and second positions, for effectively permitting said spool valve to move reciprocally between its first and second positions in order to permit the fastener-driving tool to be operated within a first one of said two different modes of operation when said switch mechanism is disposed at its first position, and for effectively preventing said spool valve from moving reciprocally between its first and second positions so as to permit the fastener-driving tool to be operated only within a second one of said two different modes of operation.