Improved safety device for vacuum preserving can

Improved safety device for vacuum preserving can

  • CN 2,412,861 Y
  • Filed: 02/24/2000
  • Issued: 01/03/2001
  • Est. Priority Date: 02/24/2000
  • Status: Active Grant
First Claim
Patent Images

1. , a kind of vacuum is preserved a jar Improvement type safety device, form by tank body, internal layer seal cover cap and outer the covering, seal cover cap is provided with bleed the purt pipe and the part of bleeding, be provided with a bleeder port and the valve member that loses heart in a side, be provided with a preformed hole at the covering correspondence position, it is characterized in that:

  • internal layer seal cover cap (30) appropriate location is provided with a pore post (35), be with a spring (37) and a telescopic gum cover (36) at pore post (35), another preformed hole (42) is established at the position that covers (40) corresponding pore posts (35) and gum cover (36) at skin.

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