Patent ID: 9096365
Filing Date: 2015-08-04
Classification: B65D

Abstract:
1. A vacuum generating apparatus, comprising: a piston member linearly movably disposed in a receiving portion which is formed at a vacuum chamber and has a first outlet, and provided with a second outlet, an elastic member disposed inside of the piston member, a first valve plate disposed in the receiving portion and adapted to open or close the first outlet, a second valve plate disposed at the piston member and adapted to open or close the second outlet, a separation preventing plate mounted in the receiving portion such that the piston member penetrates through an inner hole of the separation preventing plate to prevent separation of the piston member, the piston member ascending and descending relative to the separation preventing plate to create a vacuum, wherein rotating the piston member at a descended position fixes the piston member relative to the separation preventing plate to prevent ascending of the piston member, and a unit for pressuring the first valve plate comprising: