B - Operations – Transporting – 25 – C
Patent
B - Operations, Transporting
25
C
B25C 1/00 (2006.01) B25C 1/04 (2006.01)
Patent
CA 2149698
A pneumatic powered fastener driving apparatus is disclosed as comprising a housing, and a cylinder disposed within the housing to divide the housing into first and second compressed air chambers. A piston is disposed within the cylinder to divide the cylinder into first and second portions and movable therein between a first rest position and a second position remote therefrom. A fastener driving element connected to the piston. A valve assembly is movable between a closed position for blocking communication between the first compressed air chamber and the first cylinder portion and an open position supplying compressed air from the first compressed air chamber to the first cylinder portion. A passage is formed between the periphery of the piston and the inner wall surface of the cylinder for providing when the piston is disposed at the second remote position the only effective communication for the flow of compressed air from the second compressed air chamber to the first cylinder portion.
Monacelli Umberto
Ridout & Maybee Llp
LandOfFree
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