Patent ID: 6095257
Filing Date: 2000-08-01
Classification: B25D

Abstract:
A hydraulic hammer comprising:a housing, having an upper portion;a top cover plate having a lower portion and connected to the upper portion of the housing;a hammer assembly having, an upper portion installed in the housing; anda buffer assembly for supporting the hammer assembly, installed between the top cover plate and the hammer assembly,wherein the buffer assembly comprises a top buffer, a sliding plate and a top buffer plate, and a connection member disposed in a central portion of each said top buffer, sliding plate, and top buffer plate, said top buffer contacts the upper portion of the hammer assembly and is manufactured from an elastic material for absorbing impact, said sliding plate has a top and a bottom surface, contacts the lower portion of the top cover plate and is manufactured from a non-elastic lubricated plastic material, said top surface of said sliding plate slides along said lower portion of the top cover plate, and said top buffer plate is disposed between the top buffer and the sliding plate, wherein said top buffer plate slides along the bottom surface of sliding plate.