Rotary expansible chamber devices – Intermittently accelerated and receding members rotate in... – Each a working member
Patent
1989-06-01
1991-12-03
Vrablik, John J.
Rotary expansible chamber devices
Intermittently accelerated and receding members rotate in...
Each a working member
123245, 74435, 74436, F01C 1077
Patent
active
050696041
ABSTRACT:
A radial piston rotary device is disclosed having a gear drive mechanism to convert the varying speed of rotating piston shafts into uniform rotational motion of a power shaft. The rotary device has a pair of radial pistons, each having diametrically opposed piston portions and each connected to concentric piston shafts. Each of the pistons is mounted within a housing so as to rotate about the longitudinal axis of the piston shafts. The drive system to convert the motion of the piston shafts to uniform rotational motion includes irregular gear sets operatively connected to each of the piston shafts. Each of the irregular gear sets has gear wheels with gear teeth segments extending over only a portion of their peripheries and also having different pitch diameters. The gear wheels are connected so as to rotate together, along with one of the radial pistons, as a unit. The other radial piston is connected to a separate irregular gear set having an identical construction. The drive ratios between the gear sets are alternated such that a "leading" piston drives the power shaft at a relatively constant speed.
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Cavanaugh David L.
Vrablik John J.
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