Extension spring

Extension spring

CN
  • CN 210,565,929 U
  • Filed: 07/22/2019
  • Issued: 05/19/2020
  • Est. Priority Date: 07/22/2019
  • Status: Active Grant
First Claim
Patent Images

1. An extension spring, characterized in that:

  • including the spring body, the both ends of the spring body are connected with the connecting portion that are used for connecting the foreign object respectively, and the spring body overcoat has the anti-skidding sleeve pipe that is used for the extension spring body, and the at least one end of spring body is provided with spacing bellying, and spacing bellying is used for cooperating the anti-skidding sleeve pipe extension spring body and preventing the anti-skidding sleeve pipe roll-off spring body.

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