초록 ▼

A rectangular mounting frame of angle cross section encircling a case receivable at least partially within the opening of a wall includes an outer flange portion projecting perpendicularly from the case sidewalls closely overlying the margin of the wall opening and an inner flange portion slidable r

A rectangular mounting frame of angle cross section encircling a case receivable at least partially within the opening of a wall includes an outer flange portion projecting perpendicularly from the case sidewalls closely overlying the margin of the wall opening and an inner flange portion slidable relative to the case sidewalls interposed between such sidewalls and the wall structure within the wall opening. Screws extend from the inside of the case through the case sidewalls and the inner flange portion of the mounting frame and are screwed into the wall structure within the wall recess.

대표청구항 ▼

A device for installation in a wall structure recess comprising: a case having a substantially rectangular cross section of substantially constant area from front to back of said case, the outer periphery of said case being formed by flat sidewalls including top, bottom and sides for blocking acce

A device for installation in a wall structure recess comprising: a case having a substantially rectangular cross section of substantially constant area from front to back of said case, the outer periphery of said case being formed by flat sidewalls including top, bottom and sides for blocking access between the interior of said case and the wall recess, and said case top, bottom and sides having forward coplanar edges defining a planar front opening; a rectangular mounting frame separate from said case, including four border members arranged orthoginally, each border member being of angle cross section forming an outer flange portion and an inner flange portion, said inner flange portions of said four border members being parallel to and snugly encircling said case sidewalls and said outer flange portions of said four border members projecting outward from said border member inner flange portions transversely thereof and away from the case sidewalls respectively adjacent thereto for engagement with the outer face of the wall structure encircling the recess, said inner flange portion of each border member being substantially narrower than the width of said case sidewalls and projecting from the outer flange portion joined thereto away from said case frame opening for insertion into the wall structure recess, and said mounting frame and case being fitted for relative sliding for adjustment of said mounting frame toward and away from said case front opening between a position of said mounting frame in which its outer flange portions are closer than the width of said frame inner flange portions to the case front opening, a position of said mounting frame in which its outer flange portions are substantially even with the case front opening when the case front opening is substantially flush with the outer margin of the wall recess, and positions of said mounting frame in which its outer flange portions are farther than the width of said frame inner flange portions from the case front opening with said mounting frame border member outer flange portions in engagement with the outer margin of the wall structure recess when said inner flange portions project rearward into the wall structure recess and when said case is installed in such recess with its sidewalls extending inwardly beyond the inner edges of said mounting frame border member inner flange portions; and headed securing pins of a length much greater than the combined thicknesses of said case sidewalls and said mounting frame border member inner flange portions for extending from inside said case through said case sidewalls and through said mounting frame border member inner flange portions and penetrating into the wall structure forming the recess for forcing walls of said case and adjacent inner flange portions of mounting frame border members conjointly toward the wall structure within the wall structure recess whereby said case and said mounting frame are positively secured conjointly in the wall structure recess by said securing pins.