| http://www.w3.org/ns/prov#value | - id inflated state, a means for increasing the air pressure in said reservoir, a means for decreasing the air pressure in said reservoir, and an air communication means, coupling said bladder to said reservoir, for allowing communication therebetween, including a concentrating means, located at a point between its ends, for concentrating said pulse pressure components in said bladder. 6.
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