| 摘要 |
A speed responsive device including a pair of rotary members, a mass movable outwardly under the action of centrifugal force such outward movement of the mass imparting relative angular movement of the members and spring means for restraining outward movement of the mass. The spring means comprises a pair of coiled tension springs which are connected to a leaf spring engaging with an outer curved surface of the mass. The initial radius of curvature of the leaf spring is greater than that of the aforesaid surface and means is provided to limit the extension of the tension springs.
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