Back to results
US 4,359,617 AGranted
Weighted trigger device
AssigneeSociete Nationale d'Etude et de Construction de Moteurs d'Aviation "S.N.E.C.M.A."
InventorJean-Max M. Silhouette
Life of this patent
Estimating the term…
Abstract
A weighted trigger device in which the centrifugal force of weights revolving in conjunction with an input shaft is used to displace a movable element axially and in opposition to the force of a spring in order to trigger a control system. The resistance of the weight system is positive and greater at all points to the resistance of the spring.
Claims6
A weighted trigger device, comprising:
- a control system;
- a spring
- a movable element operatively associated with said spring;
- a plurality of rotatable weights;
- an input shaft for driving said rotatable weights, transforming centrifugal force to which said weights are submitted into an effort which tends to displace said movable element along the axis of said device against the force exerted by said spring so as to trigger said control system as soon as the speed of rotation of said input shaft exceeds a preset level, such that the resistance of said weights is positive and greater than the resistance of said spring in the position occupied by said movable element near the triggering of the control system.
2 more elements
A weighted trigger device, comprising:
- a housing;
- a control system disposed within said housing;
- a spring operatively associated with said control system and having a predetermined spring rate;
- a plurality of rotatable and translatable weights operatively associated with said control system for producing a variable and predetermined centrifugal force;
- a movable element operatively associated with said rotatable weights and operatively associated with said spring;
- an input shaft for rotating said rotatable weights and for generating said variable and predetermined centrifugal force;
- and means for applying said centrifugal force to said spring at a positive rate greater than said predetermined spring rate.
4 more elements
Dependencies are inferred from the claim text.