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US 4,778,959 AGranted
Fused disconnect switch
AssigneeGeneral Electric Company
InventorsRobert J. Sabatella, John A. Morby, Thomas A. Yazvac
Life of this patent
Estimating the term…
Abstract
A fused disconnect switch within a metal enclosure provides rapid connection line and load stabs with a minimum degree of arcing. The operating handle is arranged within the switch enclosure and is accessed by means of an operating handle extension. The operating handle mechanism is isolated from the electrical components within the enclosure.
Claims9
A fused disconnect switch comprising:
- a case and a cover;
- a molded plastic load terminal assembly and a molded plastic switch assembly interconnected by at least one fuse and assembled within said case;
- a rotary contact blade mechanism on said switch assembly arranged between line and load contact stabs and rotating a contact blade between line and load contact stabs to interrupt circuit current between corresponding line and load terminals on said switch assembly;
- an actuator assembly within said case including a drive mechanism connecting between an operating handle and said contact blade mechanism thereby driving a contact blade on said contact blade mechanism under the bias of a mechanism spring;
- and
- a contact delay spring connecting between said drive mechanism and said contact blade mechanism to refrain rotation of said drive mechanism until said contact mechanism has moved to an overcenter position.
3 more elements
Dependencies are inferred from the claim text.