Without the vacuum extractor that lock is self-styled

Without the vacuum extractor that lock is self-styled

  • CN 204,197,378 U
  • Filed: 11/03/2014
  • Issued: 03/11/2015
  • Est. Priority Date: 11/03/2014
  • Status: Active Grant
First Claim
Patent Images

1. the vacuum extractor that a nothing lock is self-styled, comprise the seal box for vacuumizing or seal casing (20), it is characterized in that seal box or seal casing (20) are provided with vacuum extractor, vacuum pumping pump (5) is provided with in this vacuum extractor, be provided with elastic sealing element (7) between vacuum extractor and seal box or seal casing (20), the communication port of vacuum pumping pump (5) is positioned at elastic sealing element (7).

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