Pumps – Ambulant – body supported – or with carrying handle
Patent
1993-10-12
1994-12-06
Bertsch, Richard A.
Pumps
Ambulant, body supported, or with carrying handle
417523, 417540, 417567, 74 49, F04B 2104, F04B 1100
Patent
active
053705041
ABSTRACT:
A pair of oppositely directed pistons are reciprocatingly mounted in a cylinder. The cylinder is formed unilaterally with and encapsulated within a tank for receiving compressed air and has an exhaust port at each end and a valve for controlling the flow of air into the tank. Each piston has a head with an aperture and a unidirectional valve for controlling air flow into the cylinder. An air inlet to the cylinder is located between the piston heads. A motor has a drive shaft extending through the air inlet and a transmission connected to the pistons drives the pistons synchronously in opposing, reciprocating strokes.
REFERENCES:
patent: 591137 (1987-10-01), Miles
patent: 951529 (1910-03-01), Hemenway
patent: 1654893 (1928-01-01), Meyers et al.
patent: 2733664 (1956-02-01), Saalfrank
patent: 4842492 (1989-06-01), Gannaway
Bertsch Richard A.
Kioritz & Corporation
McAndrews, Jr. Roland G.
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