Fuse cutout with improved dropout performance

Details Fuse cutout with improved dropout performance Fuse cutout with improved dropout performance

2005-07-26

2005-07-26

Vortman, Anatoly (Department: 2835)

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

C337S171000, C337S172000

Reexamination Certificate

active

06922132

ABSTRACT:
An improved fuse cutout is provided of the type having a fuse tube assembly that moves to a dropout position upon operation in response to a fault current or other overcurrent. These types of fuse cutouts include the pivotal mounting of the fuse tube assembly with respect to a support hinge with the fuse tube assembly being released for pivotal movement to the dropout position when the fuse cutout has operated. The fuse tube assembly includes a collapsible toggle joint that collapses upon operation of the fuse cutout. The improved fuse cutout includes additional dropout assistance that is provided via a resilient member operating between the components of the collapsible toggle joint to apply a force to assist the collapse of the toggle joint.

REFERENCES:
patent: 4317099 (1982-02-01), Sabis
patent: 4326184 (1982-04-01), Murdock
patent: 4546341 (1985-10-01), McNaghten et al.
patent: 4768010 (1988-08-01), Brown et al.
patent: 5463366 (1995-10-01), Hassler et al.
patent: 5566423 (1996-10-01), Hassler et al.
patent: 593162 (1994-04-01), None
patent: 676788 (1995-10-01), None

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