Pneumatically operated fastener driving tool

Details Pneumatically operated fastener driving tool Pneumatically operated fastener driving tool

2007-01-02

2007-01-02

Kershteyn, Igor (Department: 3745)

Motors: expansible chamber type

Cyclically operable

Working member controlled motive fluid for distributor motor

C091S461000, C060S413000

Reexamination Certificate

active

11038115

ABSTRACT:
A pneumatically operated fastener driving tool capable of reducing a time period from operation timing of a trigger to downward movement of a driver blade for fastener driving, and reducing a time period from the release timing of the trigger to a timing at which respective components are returned to their initial positions for a subsequent nail driving. As components a main valve and a trigger valve is provided. The main valve is movable within a main valve chamber connected to a main valve control channel. The trigger valve selectively provides fluid communication between the accumulator and a main valve chamber through the main valve control channel and between the main valve chamber and the atmosphere through the main valve control channel. A ratio of cross-sectional area of the main valve control channel to an internal volume of the main valve chamber is defined to a specified ratio.

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patent: 11-033930 (1999-02-01), None

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