Power-free automatic cycle lifesaving ladder

Power-free automatic cycle lifesaving ladder

  • CN 2,624,953 Y
  • Filed: 06/18/2003
  • Issued: 07/14/2004
  • Est. Priority Date: 06/18/2003
  • Status: Active Grant
First Claim
Patent Images

1. , a kind of unpowered automatic circulation safety ladder, it is characterized in that:

  • be provided with damping reducing gear and sprocket system on the body frame top of safety ladder and constitute transmission, circulation link chain mechanism is located at the body frame front, reciprocation cycle chain and pedal are installed on it, link chain mechanism and damping reducing gear constitute transmission by sprocket system, but chain drive-belt mechanism and the pedal rolling that moves in circles under the body weight effect.

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