Patent ID: 7695786

Claim:
An inflatable pneumatic bag, comprising: two outer films stacked on each other; two inner films located between the two outer films; an interval line formed by a thermal-sealing means that couples said two outer films and said two inner films; a pneumatic passage, which located between an upper end of the two inner films and the interval line and formed by attaching the two inner films by said thermal-sealing means; at least one air tube as space for storing air, which is located between bottom portions of the two outer films and the interval line and formed by attaching to seal bottom ends of the two outer films by thermal-sealing means; at least one air ingress, connecting between the pneumatic passage and the air tube, which is formed by attaching to seal the two inner films at the interval line by said thermal-sealing means; and a buffer space as space for storing air, which is located between the upper end of each outer film and the interval line and is formed by using said thermal-sealing means to seal the two outer films and the two inner films; wherein, the air of the buffer space presses the two inner films and seals the pneumatic passage to prevent leakage from the air tube into the buffer space.