| 摘要 |
A pneumatic apparatus includes a treadle bellows fluidically communicated with a follower bellows of which an upper bellows flange is secured with a toilet seat and a lower bellows flange secured on a toilet bowl, whereby depressing the treadle bellows compresses air into the follower bellows for expanding the follower bellows, the toilet seat and cover will be lifted, and upon a releasing of the treadle bellows the air in the follower bellowers will be sucked into the treadle bellows to contract the follower bellows to lower the seat and the cover for relevant uses.
|
