Electricity: electrothermally or thermally actuated switches – With separate distinct diverse art-type switching device – Fusible element device with other
Patent
1975-04-01
1976-04-20
Miller, J. D.
Electricity: electrothermally or thermally actuated switches
With separate distinct diverse art-type switching device
Fusible element device with other
337 8, 337146, H01H 8500
Patent
active
039522733
ABSTRACT:
Disclosed is an interrupter switch mechanism for interrupting current flow in a high voltage electrical circuit. A tubular switch blade is mounted for linear movement to engage and disengage a stationary contact. A spring is positioned within the hollow interior of the tubular switch blade so that it can be biased in either direction by sliding plugs also positioned within the tubular switch blade. The sliding plugs include pins which engage a slot in a plate member so that movement of the plate member in either direction causes one or the other of the plugs to move to bias the spring in that direction. The plate member has gear teeth formed thereon for engaging mating teeth on a tool engaging disk. The tool engaging disk has an opening therein for engaging the end of an insulated tool which may be rotated to operate the mechanism. The plate member also has cam surfaces which engage first and second cam follower members to cause these cam follower members to pivot. The cam follower members also include stop arms which engage the tubular switch blade and prevent it from moving until the spring is fully biased and then releases the switch blade so that the switch blade will move rapidly to either engage or disengage the stationary contact. The invention may also include fuse contact members which are operated by the tool engaging disk to engage a fuse or other electrical component when the tool engaging disk is rotated in one direction and to disengage the fuse or component when the tool engaging disk is pivoted in the opposite direction.
REFERENCES:
patent: 3400353 (1968-09-01), Schockelt
patent: 3530418 (1970-09-01), Keogh et al.
patent: 3576509 (1971-04-01), Bernatt
patent: 3790861 (1974-02-01), Sakats
patent: 3842381 (1974-10-01), Bernatt
Bell Fred E.
Miller J. D.
S & C Electric Company
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