Patent ID: 7590030

Claim:
A governor comprising: a rotor; a first wing being configured to extend perpendicularly to a rotational axis of said rotor and being outwardly movable in a radial direction by a centrifugal force of rotation of said rotor; a first wing returning unit being connected to said rotor and said first wing to move inwardly said first wing in the radial direction of said rotor; and an opposing object being arranged on a side outside the circumference of said rotor and in a place at a prescribed distance outside the outermost position of said first wing, said opposing object having a first opposing plate configured to extend in parallel to said first wing and a second opposing plate configured to extend in parallel to said first wing, at least a portion of said first wing being rotatable between in an axial direction and inside in the radial direction said first plate and said second plate at a prescribed distance away from said first plate and at a prescribed distance away from said second plate.