http://216.239.59.104/search?q=cache:She1dEwURfwJ:www.torre....

reference to “balones pneumáticos”…


Doble balonamiento
El procedimiento de obturación mediante balones neumáti-
cos prescrito por la norma NT-520-D consiste en la intro-
ducción y posterior inflado de dos balones contrapuestos en
la zona donde se desea interrumpir el paso de gas

http://www.patentstorm.us/patents/5477886/description.html

he invention relates to a method for manufacturing an inflatable closing
plug for pipes, which plug comprises a balloon-like element of elastic
material.

Such plugs are used for closing pipes, for instance gas pipes, and are
inserted beforehand in an opening of the gas pipe, whereafter the
balloon-like element is placed under pressure by means of compressed air
or the like so that the balloon widens and closes the passage of the pipe.
In order that the balloon is able to exert any pressure on the inner wall
of the gas pipe, the balloon must have limited freedom of movement,

Sensors and Actuators A: Physical : Thin flexible end-effector ...
A pneumatic balloon is applied to actuate a thin flexible end-effector. .... deflate the balloon (τfall) are fixed and limited by the resistance of the pipe ...
linkinghub.elsevier.com/retrieve/pii/S0924424700005331 - Similar pages
by S Konishi - 2001 - Cited by 13 - Related articles - All 3 versions