B - Operations – Transporting – 25 – D
Patent
B - Operations, Transporting
25
D
121/21
B25D 9/04 (2006.01)
Patent
CA 1056668
ABSTRACT An air hammer having a main body including an elongated cavity with a ram slidably mounted therein. The ram is driven by compressed air delivered through inlet means to the cavity in such a way as to drive the ram up and down to impact a tool. A shut off system is also provided to stop the hammer when it is unloaded. The shut off system includes a passageway which directs air to hold the anvil away from the ram. A further passageway through the anvil communicates the cavity beneath the ram with the upper end of the tool. When the tool does not engage work it uncovers an exhaust passage in the tool holder through which air can escape.
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