Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Fabric or lattice; e.g. – indeterminate grating
Reexamination Certificate
1999-10-05
2001-06-12
Friedman, Carl D. (Department: 3635)
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Fabric or lattice; e.g., indeterminate grating
C052S664000, C052S660000, C049S050000
Reexamination Certificate
active
06244013
ABSTRACT:
BACKGROUND OF THE INVENTION
The Present invention relates to a combination grille, and more particularly to a combination grille that can easily and quickly set up without the use of a tool.
Various grilles for window have been disclosed, and appeared on the market. Similar designs are shown in U.S. Pat. No. 5,813,187 and U.S. Ser. No. 09/165,497. These two designs are also invented by the present inventor, and can be conveniently set up without the use of a tool. However, these two designs still have minor drawbacks. The main drawback of these two designs is the complicated procedure of processing through holes or plugholes on the component parts, resulting in a high cost.
SUMMARY OF THE INVENTION
It is one object of the present invention to provide a combination grille, which can easily quickly be set up without the use of a tool. It is another object of the present invention to provide a combination grille, which is inexpensive to manufacture. According to one embodiment of the present invention, the combination grille for window comprises four hollow side frame bars arranged at four sides, and crossed hollow transverse frame bars and hollow longitudinal frame bars arranged within the side frame bars, and a plurality of sliding cover plates respectively covered on the side frame bars and the transverse frame bars, wherein the side frame bars and the transverse frame bars each comprise a longitudinal opening at one side, two sliding grooves longitudinally extended along two opposite sides of the longitudinal opening; the side frame bars each have a longitudinal series of coupling holes at one side adjacent to the respective longitudinal opening; the transverse frame bars each have a plurality of longitudinally spaced transverse through holes across the respective longitudinal opening for the passing of the longitudinal frame bars; the sliding cover plates are respectively covered on the longitudinal opening at each of the transverse frame bars and the side frame bars, each having two coupling flanges longitudinally disposed at two opposite lateral sides and respectively inserted into the sliding grooves at each of the side frame bars and the transverse frame bars. Because the side frame bars and the transverse frame bars are respectively shaped like a channel bar, it is easy to process through holes at the frame bars.
REFERENCES:
patent: 5406762 (1995-04-01), Buard
patent: 6085481 (2000-07-01), Lee
Chavez Pat J.
Friedman Carl D.
Rosenberg , Klein & Lee
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