Trim clamp assembly

Details Trim clamp assembly Trim clamp assembly

1984-01-05

1984-12-11

Hall, George T.

Receptacles

Closures

Having means for securing or retaining closure in its closed...

220 38, 361356, 361360, B65D 4516

Patent

active

044873301

ABSTRACT:
A compact and economical clamp assembly for securing a cover plate to an open front electrical panelboard box having mounting flanges. The assembly includes an insulating sleeve surrounding a screw, both of which extend through a hole in the cover plate. The screw has a slotted head, a reduced diameter tip and an intermediate threaded portion. The sleeve has a recess to receive the screw head and a pair of diametrically opposed slots extending from a mid portion of the sleeve to one end. The screw is positioned so that the slots of the sleeve overlap a substantial portion of the threaded portion of the screw. A nut, threadingly engaged with the screw, has two wings which protrude through the respective slots of the sleeve. A clamp member, having a camming end and a clamping end, is pivotally connected to the wings. A torsional spring biases the camming end of the clamp member into contact with the cover. As the screw is turned in a predetermined direction, the nut advances toward the cover, drawing the clamping end to the cover to secure the cover plate against the mounting flange of the box.

REFERENCES:
patent: 3339124 (1967-08-01), Jorgensen
patent: 3946283 (1976-03-01), Meacham et al.
patent: 4131932 (1978-12-01), Brumfield et al.

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