Fastener driving tool
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United States of America Patent
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Aug 18, 2020
Grant Date -
Sep 28, 2017
app pub date -
Jun 19, 2015
filing date -
Jun 30, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A fastener driving tool is provided which performs driving only when a trigger lever is turned ON following a push lever. The fastener driving tool includes a sleeve valve driving a driver blade, and in the sleeve valve, supply and exhaust of compressed air are controlled by a trigger valve. The trigger valve includes a valve piston movable between an air-supply position where the valve piston causes an opening part and a communication port to communicate with each other and blocks an exhaust port, and an exhaust position where the valve piston blocks the opening part and causes the exhaust port and the communication port to communicate with each other, and a plunger movable between a communication position where the plunger causes compressed air in a pressure accumulation chamber to be supplied to a pressure chamber and a shutoff position where the plunger shuts off communication between the pressure accumulation chamber and the pressure chamber and causes air in the pressure chamber to be exhausted. When a trigger and a push lever are in striking stop positions, the plunger is driven to a communication position by a trigger arm.
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