Centrifugal governor
AssigneePax Electro Products AB
InventorsOlov Thorn, Staffan Jonsson
Life of this patent
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Abstract
A centrifugal governor comprises a bar member pivotally mounted on a rotatable bearing member. The bar member is provided with an inclined ramp against which a follower bears which is connected to a device which is to be regulated. First and second resilient forces, which may be overcome by the centrifugal force generated by rotation of the bar member, urge the bar member into its rest position and the follower member into contact with the bar member. The governor is generally applicable, one of the preferred fields of application being the control of the flow through a channel associated with a ventilator.
Claims10
A centrifugal governor for generating a rectilinear control movement in dependence on the rotational velocity of a shaft defining an axis of rotation, said governor comprising a centrifugal body, a bearing member rotatable by said shaft and pivotally supporting said centrifugal body on a predetermined fixed axis spaced from the axis of rotation of the bearing member, said axis of said centrifugal body extending parallel to said axis of rotation, said centrifugal body comprising a bar member formed with a ramp sloping relative to said axis of rotation, the path of movement of said bar member intercepting said axis of rotation when said bar member is swung in a plane at right angles to said axis of rotation, first resilient means constantly urging said bar member in a direction towards said axis of rotation, follower means adapted to bear against said ramp at least in the initial position of said bar member and to be displaced by said ramp in dependence on the swinging movement of said bar member, said follower means being constantly urged by second resilient means in the direction towards said bar member and coupled to a device which is to be regulated in dependence on said rotational velocity, and the strengths of said first and second resilient means being selected such that said first resilient means is stronger than said second resilient means but weaker than the combined force of said second resilient means plus the centrifugal force generated upon rotation of said centrifugal body.
Dependencies are inferred from the claim text.