Patent ID: 7325625
Filing Date: 2008-02-05
Classification: B29C,E04G

Abstract:
1. An impact tool comprising: an elongated movable rod having an upper end and a lower end; a handle connected to the upper end of the rod; an anvil fixed to the lower end of the rod; a collar mounted above the anvil with the rod passing therethrough; a replacement blade unit disposed below the anvil and having an upper portion defining an impact surface engagable with the anvil, and a lower portion having a separating blade edge; a pair of guide rods extending between the collar and the upper portion of the blade unit, and passing through the anvil on opposite sides of the rod, the guide rods enabling sliding movement of the anvil therealong between the collar and the blade unit as the handle and rod are moved up and down, the guide rods having upper ends joined to the collar by a first set of fasteners passing transversely therethrough and having lower ends secured to the upper portion of the blade unit by a second set of fasteners passing transversely therethrough; a tubular sheath telescoped over and around and slidably mounted relative to a portion of the rod, the collar, the anvil and the upper portion of the blade unit, and removably connected to the upper portion of the blade unit by a single removable retaining bolt passing through aligned throughholes formed in the upper portion of the blade unit and the sheath, the bolt passing entirely through the upper portion of the blade unit and the sheath and being retained in place by a retaining pin; and a removable locking pin selectively connecting the sheath and the anvil and passing entirely through the sheath and the anvil for preventing sliding movement of the rod and the anvil, the locking pin being retained in place by a retaining strap; wherein, upon removal of the retaining bolt and the locking pin, the sheath is slidably raised to permit removal of the second set of fasteners so that the blade unit can be replaced.