Expansible chamber device having rotating piston braking and...

Rotary expansible chamber devices – Intermittently accelerated and receding members rotate in... – Each a working member

Reexamination Certificate

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Details

C418S033000, C123S245000

Reexamination Certificate

active

06991441

ABSTRACT:
An expansible chamber device includes a braking system with a set of cam surfaces on the piston assemblies and a set of movable members adapted to alternately engage first and second sets of cam surfaces to stop the rotation of first piston assembly while permitting second piston assembly to rotate freely. A pair of elongate pivotable members engage the piston assemblies on one end and engage a slidable member having an adjustable length on the other end. The slidable member and the pivotable members alternate between first and second positions in response to engagement with ramp and stop surfaces provided on the piston assemblies. The rotating piston synchronizing system includes a set of biasing springs to urge the pivotable members into a suitable position to permit the device to be started from an at rest condition. The adjustable length slidable member enables a variable compression ratio.

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