B - Operations – Transporting – 25 – C
Patent
B - Operations, Transporting
25
C
B25C 11/00 (2006.01) B25B 27/02 (2006.01) B25D 9/14 (2006.01) A61B 17/00 (2006.01) A61B 17/068 (2006.01) A61B 17/076 (2006.01) A61B 17/92 (2006.01) B25D 9/00 (2006.01)
Patent
CA 2080859
-1- PNEUMATICALLY DRIVEN REVERSE IMPACT DEVICE Abstract of the Disclosure A device for removing pins, nails, dowels, rods, and the like from material which includes wood, metal, concrete, and human and animal bone, includes a pneumatically actuated piston produc- ing a reverse impact striking effect which causes extraction of the pin from the material. The device includes a main housing comprising a tool handle, an elongated barrel partially mounted in the tool handle, and a muffler housing fitted on the barrel and abutting the tool handle. A central chamber extends the length of the barrel, and disposed within the central chamber is a shaft which is adapted for linear reciprocal movement therein. An anvil is mounted at the inner end of the shaft and a tool holder is mounted at the opposite end of the shaft. Slidably disposed on the shaft is a piston which is adapted for linear reciprocable movement thereon for forcibly striking the anvil. An upper valve block, a lower valve block, and a flipper valve positioned there- between are located within the tool handle adjacent the anvil for directing pressurized air from an external source into the central chamber, and concomitant with the exhaustion of air from the central chamber, causes the slidable movement and the reverse striking impact of the piston against the anvil, thus effecting pin removal.
Knoll Alvil Leroy
Mead Donald Roy
Knoll Alvil Leroy
Mead Donald Roy
Ridout & Maybee Llp
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