Patent ID: 9624841
Date: 2017-04-18
CPC Classifications: F02D,G05G,Y10T

Claim:
1. A device for controlling rotational speed of an internal combustion engine, the device comprising: a control lever movably coupled to a support element; a detent element associated with one of the control lever or the support element; a first seat and a second seat associated with the other one of the control lever or the support element; the control lever actuatable between: a first position in which the detent element engages the first seat and the internal combustion engine operates at a first rotational speed: and a second position in which the detent element engages the second seat and the internal combustion engine operates at a second rotational speed; wherein when the control lever is at any position between the first and second positions, a biasing force forces the detent element into engagement with either the first seat or the second seat to cause the control lever to automatically assume either the first or second position respectively; a wall separating the first seat and the second seat, at least one of the wall or the detent element comprising a convex surface, the biasing force forcing the convex surface of the wall or the detent element into contact with a surface of the other one of the wall or the detent element when the control lever is at any position between the first and second positions to cause the control lever to automatically assume either the first or second position respectively.