Easily replaceable wall panel structure

Claim 2

An improved wall panel structure, comprising: a plurality of stays screwed to a wall and in parallel relationship; a plurality of rectangular shafts positioned transversely to said stays and coupled thereto, said shafts being in parallel relationship, each said shaft having a groove therein, said groove extending longitudinally of said shaft and having U-and T-shaped cross-sections at alternating intervals longitudinally of said shaft; and a panel having four sides, opposite sides thereof being in parallel relationship, a plurality of engaging hooks extending from two opposite sides of said panel and adapted to be inserted into the grooves of two rectangular shafts in the region of the U-shaped cross-sections thereof, said panel thereafter being slidably shifted along said grooves until said engaging hooks are in regions of the grooves having T-shaped cross-sections, whereby said panel may be firmly retained by two rectangular shafts.

Claim 3

The improved wall panel structure of claim 1 wherein two engaging hooks are provided on each of said two opposite sides of said panel.

Claim 4

An improved wall panel structure comprising: a plurality of stays screwed to a wall and in parallel relationship; a plurality of rectangular shafts positioned transversely to said stays and coupled thereto, said shafts being in parallel relationship, each said shafT having a groove therein, said groove extending longitudinally of said shaft and having a U-shaped cross-section, a pair of plates being positioned within said groove and spaced apart, said plates having grooves centrally located therein and extending parallel to said shaft groove, said plate grooves extending from a side of said plates and terminating centrally thereof, said plates being spaced apart a distance equal to approximately one-fourth the width of the panel; and a panel having four sides, opposite side thereof being in parallel relationship, a plurality of engaging hooks extending from two opposite sides of said panel engaging hooks on each side of said opposite sides and adapted to be inserted into grooves of said rectangular shafts, said panel thereafter being slidably shifted along said grooves until said engaging hooks are coupled to said plates in said grooves, whereby said panel may be firmly retained.

Claim 5

An improved wall panel structure comprising: a plurality of stays screwed to a wall and in parallel relationship; a plurality of rectangular shafts positioned transversely to said stays and coupled thereto, said shafts being in parallel relationship, each said shafT having a groove therein, said groove extending longitudinally of said shaft and having a U-shaped cross-section, a pair of plates being positioned within said groove and spaced apart, said plates having grooves centrally located therein and extending parallel to said shaft groove, said plate grooves extending from a side of said plates and terminating centrally thereof, said plates being spaced apart a distance equal to approximately one-fourth the width of the panel; and a panel having four sides, opposite side thereof being in parallel relationship, a plurality of engaging hooks extending from two opposite sides of said panel engaging hooks on each side of said opposite sides and adapted to be inserted into grooves of said rectangular shafts, said panel thereafter being slidably shifted along said grooves until said engaging hooks are coupled to said plates in said grooves, whereby said panel may be firmly retained.

Claim 6

An improved wall panel structure, comprising: a plurality of stays screwed to a wall and in parallel relationship; a plurality of round shafts positioned transversely of said stays and coupled thereto, said shafts being in parallel relation, said shafts each having first sections having a first diameter and second sections interposed between said first sections and having a diameter smaller than the diameter of said first sections; a panel having a front surface and a back surface and having four sides, opposite sides thereof being in parallel relationship, and having four engagement portions on the back surface, said engagement portion being aligned in two rows for engagement with two of said round shafts, said panel sliding freely over the sections of said shafts having a smaller diameter and being firmly retained by said sections having a larger diameter.

Claim 7

An improved wall panel structure, comprising: a plurality of stays screwed to a wall and in parallel relationship; a plurality of round shafts positioned transversely of said stays and coupled thereto, said shafts being in parallel relation, said shafts each having first sections having a first diameter and second sections interposed between said first sections and having a diameter smaller than the diameter of said first sections; a panel having a front surface and a back surface and having four sides, opposite sides thereof being in parallel relationship, and having four engagement portions on the back surface, said engagement portion being aligned in two rows for engagement with two of said round shafts, said panel sliding freely over the sections of said shafts having a smaller diameter and being firmly retained by said sections having a larger diameter.