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The origin is debated, but the earliest patents related with plugging the pipes date back to the 1890s. The first patent for a pipe plug as we know today is by Oscar F. Anderson, published in 1952., [3] and the first patent for inflatable plugs was published in 1965 [4]
Contains Inflatable Rubber tube inside also called Lug shafts. Which contains bladder multiple outside also called Multi-tube Shaft . In Lugs type Air shaft, shaft consist of air bladder inside it. It is manufactured using Aluminium or Iron pipe as outer pipe in which there are u-shaped slot are there in which lugs are fitted manually.
Pneumatic bladders, known as dunnage bags, are used to stabilize cargo within a container.. Pneumatic bladders are used in medical research. [2]Leading edge inflatable kites use pneumatic bladders restrained by a fabric case; the bladder is selected slightly larger than the case, so that at operational inflation the bladder is not stressed while the case defines the final shape of the leading ...
Spill containment is where spills of chemicals, oils, sewage etc. are contained within a barrier or drainage system rather than being absorbed at the surface. One method is to use an inflatable stopper or pneumatic bladder which is inserted into the outflow of a drainage system to create a containment vessel.
A balloon is an inflatable flexible filled with air and also gas, such as helium, hydrogen, nitrous oxide or oxygen. Modern balloons can be made from materials such as latex rubber, polychloroprene, or a nylon fabric, while some early balloons were made of dried animal bladders [citation needed].
The common theme among currently available designs is a mechanical constriction mechanism – an inflatable cuff filled with sterile saline solution and placed around the urethra which keeps the urethral lumen closed; this is due to the pressure produced inside the device and an externally accessible control pump mechanism placed between two ...
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Line stopping or line plugging is a means of isolating a piping system to provide a shut off where none exists. This process serves as a control, or temporary valve , that can be removed after permanent alterations or valve replacements/additions have been made.