Pumps – Expansible chamber type – Elongated flexible chamber wall progressively deformed
Patent
1991-09-12
1993-12-28
Bertsch, Richard A.
Pumps
Expansible chamber type
Elongated flexible chamber wall progressively deformed
417479, F04B 4310
Patent
active
052734064
ABSTRACT:
A pneumatically actuated pumping device contains three or more tubular bladders enclosed in rigid jackets and interconnected through openings at both ends forming a common internal pumping channel. Every tubular bladder is enclosed in a separate coaxial jacket, equipped with a special pressure port to assure an access to the internal volume between the jacket and the bladder. Each combination of the bladder and the jacket represents one actuating segment of the pumping device. An independent pneumatic controller distributes a predetermined pattern of a pressure and vacuum pulses through the pressure port and into the enclosed volume between the jacket and the bladder of each individual segment, providing for a selective collapse of the bladders. Every actuating segment, while collapsing, produces either a bidirectional propelling or valving action. The properly selected sequence of distribution of the pressure and vacuum pulses assures a corresponding closing and opening of actuating segments, providing a desired pumping action in a chosen direction with a preselected speed and pressure. Restoration of the collapsed bladders is assured by the resilience of the bladder material, and can be additionally assisted by providing a pulse of negative pressure into the volume between the bladder and the jacket.
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American Dengi Co., Inc.
Bertsch Richard A.
Koryinyk Peter
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