Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – Venetian blind type
Patent
1999-01-21
2000-05-16
Purol, David M.
Flexible or portable closure, partition, or panel
Plural strip, slat, or panel type
Venetian blind type
160172R, E06B 928
Patent
active
060622911
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
Field of the Invention
This invention relates generally to window coverings and more particularly to a venetian blind for palladian-style windows.
For window coverings, some kinds of venetian blinds have been proposed for windows that do not have a straight horizontal header. Also, there are wood shutter assemblies for palladian-style windows. Some decorators and owners prefer venetian blinds for aesthetic compatability with other venetian blinds, and/or for light control different from what shutters provide. It is desirable to provide a venetian blind assembly that is durable, can be closed or opened with either a forward or backward tilt of the slats, and is comparatively easy to clean or service. The present invention is directed to achieving one or more of these features.
SUMMARY OF THE INVENTION
Described briefly, according to a typical embodiment of the present invention, a frame including a base rail and arch rail is provided with a set of horizontal slats which, when closed, obscure direct line of sight through the assembly and minimize light transmission through it. This assembly can be inserted in a window opening, but removable therefrom for service. It includes a set of horizontal slats mounted on ladder assemblies with notches in the slats to facilitate removal thereof for cleaning, but without disassembly of the entire blind assembly. The bottom rail is open at the bottom to accommodate a closure piece, but enable removal thereof to gain access to the mechanism, if needed for service. Guide plates are provided on the inner surface of the arch rail to accommodate sliding of the ladder cords forward and rearward to enable tilting the slats without mechanism external to the base rail or arch rail, other than the ladder cords themselves. The inside face of the arch rail is channeled to accommodate slat ends to obscure direct line of sight through the assembly when the slats are closed. Ends of slats are chamfered to facilitate tilting of the slats without interference with the inner surface of the arch rail when the slats are closed.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a venetian blind assembly for a palladian-style window with portions broken out to show some interior details.
DESCRIPTION OF THE PREFERRED EMBODIMENT
For the purposes of promoting an understanding of the principles of the invention, reference will now be made to the embodiment illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated device, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates.
Referring now to the drawing in detail, the assembly is made primarily of wood and includes a base rail 12 of downwardly-opening channel-shaped cross section. An arch rail 13 is secured to the ends of the base rail. There is a plurality of wood slats 14 supported on ladder rung strands 16 on each of the ladder assemblies 17. The ladder rung strands 16 are woven into the ladder cords at the front (room side) 18 and rear (window side) 19 of the assembly. The ladder cord is guided at the top of each ladder assembly by a guide plate 21 having a groove 22 between the plate and the underside of the arch rail 13 so the ladder cord can slide forward and rearward in the groove to permit tilting of the slats forward or rearward.
A control knob 24 is provided at the front of the base rail 12 and operates through a right-angle drive box 26 to operate the rocker shaft 27 which extends to the right from the drive box 26. Ladder operating drums 28 are non-rotatably mounted at spaced points along the length of the rocker shaft 27. The lower ends of the ladder cords are fastened to these drums so that, upon turning the knob 24, the slats can be opened or closed in eit
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Cleaver Jay R
Lamay Richard E
Morgan Joe N
Lafayette Venetian Blind, Inc.
Purol David M.
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