Patent ID: 7861798
Filing Date: 2011-01-04
Classification: B08B,B25D

Abstract:
1. A hammer device in a form of a needle gun, comprising: a cylinder housing in which a movable cylinder is slidably mounted between two compression springs, wherein a floating piston is moved to and from in the cylinder by compressed air, and delivers a hammer impulse onto an anvil; a plurality of needles mounted in an axially sliding manner in a needle carrier and under operating pressure needle heads of the needles move off the needle carrier and into a position of contact with the anvil; the needle carrier disposed between the anvil and one of the two springs, the needle carrier comprising a guide plate adjacent the one of the two springs and a separately manufactured support ring disposed between the guide plate and the anvil; the guide plate manufactured of at least two layers arranged perpendicularly to a running direction of the needles, wherein a material layer of the guide plate that is closest to the anvil having at least one of a harder material or a more wear-resistant material than a material layer which follows in the axial direction of the needles.