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Electrical-cut-off-device

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Electrical cut-off device

Details

Inventors: MacDonald, Francis D.;
Assignee:
Primary Examiner: Broome; H.
Assistant Examiner:
Attorney, Agent or Firm: O'Rourke; Thomas A.

A horizontally mounted electrical cut-out device is provided. The device includes an insulator electrically isolating a pair of terminals and a fuse assembly comprising a fuse carrier housing a fuse element removably connected between the terminals. The fuse assembly is pivotally connected at one end to one of the terminals to allow the other end of the fuse assembly to engage the other terminal when the fuse assembly is pivoted. The pivotal connection is such so as to permit the fuse assembly to drop automatically to an open position following an interruption resulting from an overload or fault thereby establishing an open circuit condition. This increases safety and provides a visible indication of the open circuit condition. A latch is provided on the other terminal to engage releasably the other end of the fuse assembly to maintain the electrical connection between the two terminals.

DETAILED DESCRIPTION We claim: 1.
An electrical cut-out device for electrically connecting a pair of power lines interconnected by a substantially horizontally mounted insulator comprising: a pair of conductive terminals each for receiving one of said power lines, each of said terminals including securing means on one end thereof, said securing means securing each of said terminals to one end of said insulator so that said terminals extend downwardly therefrom to define outwardly and inwardly facing sides, one of said terminals having a passageway formed therein having an open end in the outwardly facing side thereof, said passageway extending steeply downwards from said open end when said one terminal is extending downwardly from said insulator, said passageway being shaped at the other end thereof to define a bearing surface; releasable latch means located on the other of said terminals; and a fusible link connectable in a substantially horizontal operative position between said one and other terminals to connect electrically said terminals, one end of said fusible link including means for slidably engaging in said passageway when said means is aligned with said open end, said fusible link being pivotal in said passageway when said means is positioned at the other end of said passageway to engage releasably the other end of said fusible link with said latch means.
2.
An electrical cut-out device as defined in claim 1 wherein said passageway terminates in a substantially vertical section to define an abutment surface to inhibit movement of said fusible link along its longitudinal axis when said fusible link is in said operative position.
3.
An electrical cut-out device as defined in claim 2 further comprising a resilient retainer mounted on said one terminal and wherein said means for slidably engaging in said passageway includes a cam surface having an abutment member, said abutment member contacting said resilient retainer when said fusible link is pivoted to assume said operative position to bias said fusible link along its longitudinal axis towards said latch means

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