Electricity: conductors and insulators – Boxes and housings
Reexamination Certificate
2006-02-28
2006-02-28
Estrada, Angel R. (Department: 2831)
Electricity: conductors and insulators
Boxes and housings
C174S066000, C174S067000, C220S003200, C220S241000, C220S242000, C439S535000, C439S536000
Reexamination Certificate
active
07005576
ABSTRACT:
An assembly includes a structural member or frame that supports a load. The frame has a rectangular opening therein to a cavity within the frame that is adapted to house electrical components therein. There are a plurality of opening screw holes in the frame and spaced apart completely around and outside of the opening. The mining apparatus also includes a cover for the opening, the cover including a plate with an area larger than the opening, the plate having a first surface and an opposite second surface. The cover also includes a lip protruding from the second surface, the lip extending over and around and enclosing an area of the second surface and defining a protrusion that, when the cover is laid over the opening, fits closely within the opening.
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Aaron, Jr. Robert P.
Niederriter Edward F.
Earl Lowe, Jr. James
Estrada Angel R.
Joy MM Delaware Inc.
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