| 摘要 |
A seamless inflatable bag (13) is made with two layers, namely an outer layer (17) made of a woven material such as from p-aramid and an inner gas proof layer (19) . The outer edges of the layers are brought together around a tube (21) and secured in place by a sleeve (29) that is crimped in place such that the outer edges are interposed between the sleeve and the tube. A second sleeve (22) can be crimped on to the first sleeve for further strength. This arrangement provides an airtight seal, wherein fluids such as gas or liquid can be provided to the interior of the bag to inflate the bag upon command. The bag can be used to lift objects (31) such as in place of a vehicle jack or can be used to plug a pipe (123). To inflate the bag, an air compressor (33) provides compressed air to the interior of the bag. To deflate the bag, the compressed air is bled away from the bag.
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