| 摘要 |
A dual diaphragm distributor actuator has a one piece ring member that separates the diaphragms and constitutes a stop to limit movement of one of the diaphragms in both spark advance and retard directions, and the other diaphragm in a spark retard direction, the stop having axially separate sets of radially depending abutments engaged alternately by a control part extending radially from the one diaphragm so as to be straddled by the abutments, the sets having circumferentially spaced arcuate parts alternating circumferentially with the parts of the other set to form a bayonet type assembly of the abutments and control part.
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