Pneumatic nailer

B - Operations – Transporting – 25 – C

Patent

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B25C 1/04 (2006.01)

Patent

CA 1201851

ABSTRACT OF THE DISCLOSURE In a pneumatic nailer using compressed air for driving nails, a work chamber contains a drive piston and is in communication with a storage chamber for effecting the return of the drive piston after it has driven a nail. A valve unit controls the supply of additional compressed air into the storage chamber. A switching element is ar- ranged to react when a predetermined compressed air pres- sure is exceeded for controlling the flow of compressed air through the valve unit to the storage chamber. The switching element can be a pressure limiting valve. The combination of the switching element and valve unit a- voids unnecessary compressed air losses in the higher pressure operating ranges.

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