Compressed air-operated motor employing an air distributor
OwnerJohn R. Murphyinventor
Life of this patent
Estimating the term…
Abstract
A compressed air-operated motor driven from a rechargeable compressed air supply tank. The motor has sets of symmetrically opposing cylinders having spring-biased air admission valves and containing drive pistons connected to a crankshaft. The supply tank is connected to the admission valves through respective pilot valves of a pair controlled by relay poppet valves alternately opened by a rotating cam driven by the crankshaft. The pilot valves control the delivery of compressed air alternately to two cylinder groups comprising alternately oppositely located cylinders, so that their pistons act to drive the crankshaft in a common direction by alternate power pulsations.
Claims6
In a compressed air engine system, a compressed air storage tank, an engine provided with opposed cylinders containing pistons and a crankshaft having crank elements connected to said pistons, and compressed air supply conduit means connecting said storage tank to said cylinders and including distributing valve means to alternately admit compressed air to the respective cylinders responsive to rotation of the crankshaft, said cylinders comprising two groups, each being arranged to act simultaneously as a group on the crankshaft, with the cylinders of one group opposing the cylinders of the other group, and wherein said distributing valve means comprises respective pressure-responsive pilot valves connected between the air storage tank and the groups of cylinders and controlling the admission of compressed air to the two groups, respective relay valves connected between the air storage tank and the pilot valves and controlling the opening of the pilot valves, and cam means on the crankshaft alternately operatively engageable with said relay valves responsive to the rotation of the crankshaft.
Dependencies are inferred from the claim text.