| 摘要 |
Abstract The tool is to be used for driving fastening members into a supporting material. It comprises a cylinder (3), with a piston (5), a combustion chamber (1, 11), a cylinder head (12) bearing a fuel igniting means (36) in the chamber (1), a pin guide (9), for receiving a fastening member and the piston (5) shaft (7) and a cage (21). Return means are provided for opening the chamber (11), driving the pin guide (9) forwardly, opening and closing abutment means for the chamber (11). There are provided: - one single central spring (32) for opening the chamber (11) and, - on each side of the tool, one single opening and closing side chamber abutment (18, 55) , integral with the chamber (11) and mobile in translation on the corresponding side of the cylinder (3). Figure of the abstract: Fig. 2 |
