Hydraulic hole puncher

Hydraulic hole puncher

CN
  • CN 201,659,199 U
  • Filed: 03/22/2010
  • Issued: 12/01/2010
  • Est. Priority Date: 03/22/2010
  • Status: Active Grant
First Claim
Patent Images

1. hydraulic opener, it is characterized in that:

  • comprise oil pump, oil pipe, have the cavity that can hold rail body, be installed on oil cylinder in the body, be located at in-oil cylinder piston and piston rod, be positioned at cavity one side crowded hole formpiston, be positioned at crowded hole former, the discharge opening of cavity opposite side, described crowded hole formpiston is installed on the piston rod front end, and piston rod, crowded hole formpiston, crowded hole former three'"'"'s center line is on same straight line.

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