Driving tool and head valve assembly for a driving tool

[0011]Referring now to the drawings and initially to FIG. 1, a driving tool, such as a nailer 10, is shown. The nailer 10 includes a housing 12 having a body 14 and a handle 16, a nosepiece 18 for receiving a fastener to be driven from the nailer 10, a nail supply assembly 20 for supplying fasteners to the nosepiece 18, a fastener magazine 22 for storing the fasteners, a driving assembly 24 (FIGS. 2 and 3) for driving the fastener from the nosepiece 18, and a head valve assembly 26 (FIGS. 2 and 3) for controlling actuation of the driving assembly 24. The handle 16 is connected to a pressurized air supply via an inlet fitting 25 for supplying compressed air to the driving assembly 24. More specifically, the handle 16 includes an inlet conduit extending towards an upper portion of the body 14, where the head valve assembly 26 controls the actuation of the driving assembly 24.

[0012]Referring to FIGS. 2 and 3, the driving assembly 24 typically includes a cylinder 28, a piston 30 movable...