Machine element or mechanism – Control lever and linkage systems – Hand operated
Patent
1975-03-07
1977-02-01
Wyche, Benjamin W.
Machine element or mechanism
Control lever and linkage systems
Hand operated
G05G 108
Patent
active
040056155
ABSTRACT:
An explosion proof threaded enclosure for motor starting devices, such as an overload relay having a reset button extending therefrom. The enclosure includes a mechanism for resetting the relay from a position external to the enclosure. The reset mechanism includes a handle mounted outside of the enclosure, a connecting rod having one end thereof mechanically coupled to the handle and mounted within the enclosure for reciprocal movement from an initial position to a reset position when the handle is moved in a first direction by an operator, and a rotatably mounted actuating member mechanically coupled to the other end of the rod and having a portion thereof positioned adjacent the reset button of the overload relay when the rod is in its initial position. When the rod is moved to the reset position, the actuating member is moved to depress the reset button of the overload relay to reset the relay. The other end of the rod has a hook section which is positioned in an elongated aperture in the actuating member. The depth of the bight of the hook section is shorter than the length of the elongated aperture. Also, when the rod is in the initial position and the actuating member is manually moved by the operator to depress the reset button, the major axis of the elongated aperture and the plane of the hook section of the rod are aligned, and the rod is readily detachable from the actuating member for facilitating the removal of the overload relay from the enclosure.
REFERENCES:
patent: 2970488 (1961-02-01), Skillings
patent: 3016431 (1962-01-01), Steigerwald
patent: 3137775 (1964-06-01), Delaney
patent: 3306696 (1967-02-01), Tann
Bernkopf Walter C.
Cahill Robert A.
General Electric Company
Ratliff, Jr. Wesley S.
Wyche Benjamin W.
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