초록 ▼

Blind (8) is constructed with a tubular frame structure (10) and a tubular, automatic, bidirectionally opening top (12). The tubular elements of frame structure (10) are interconnected by upper and lower corner connectors (19) and (20). Top (12) is composed of a plurality of generally U-shaped rafte

Blind (8) is constructed with a tubular frame structure (10) and a tubular, automatic, bidirectionally opening top (12). The tubular elements of frame structure (10) are interconnected by upper and lower corner connectors (19) and (20). Top (12) is composed of a plurality of generally U-shaped rafter assemblies (40F, 40I and 40R) pivotally mounted on frame structure (10) to rotate about a common axis of rotation (48). A resilient cord (72) transversely spans the rafter assemblies and is connected to the forward rafter assembly (40F) and rearward rafter assembly (40R). Quick release latches interconnect the forward and rearward rafter assemblies to the upper portions of frame structure (10). When a particular latch assembly is released, the resilient cord (72), being in stretched condition, causes the rafter assemblies to automatically pivot in concert about common pivot axis (48) in the direction away from the released latch thereby to shift top (12) into open position.

대표청구항 ▼

A portable, automatically and bidirectionally opening top for mounting a fabric or other type of covering material to overlie the opening of a pit, blind or similar structure, comprising: (a) a frame extending along at least a portion of the perimeter of the top, said frame including a plurality of

A portable, automatically and bidirectionally opening top for mounting a fabric or other type of covering material to overlie the opening of a pit, blind or similar structure, comprising: (a) a frame extending along at least a portion of the perimeter of the top, said frame including a plurality of disassembleable, tubular, elongated members; (b) a plurality of generally U-shaped, tubular rafter assemblies; (c) means for pivotally connecting said rafter assemblies to said frame about a common axis of rotation; and, (d) means for in concert automatically pivoting said rafter assemblies about their common axis of rotation in the same selected rotational direction from a closed position of the top wherein said rafter assemblies are spaced apart relative to each other across the opening covered by the top, to an open position of the top whereby said rafter assemblies are positioned along one side of said frame, said automatic pivoting means comprising: elongate, extendible, resilient means transversely spanning said rafter assemblies, said resilient means interconnected with the two furthermost spaced rafter assemblies and being in extended, biased condition when said top is in closed position; and, quick release means rotatably connecting said two furthermost spaced rafter assemblies to adjacent portions of said frame to nominally maintain said rafter assemblies in spaced-apart relationship across the opening being covered by the top when said top is in closed position, whereby upon release of said quick release means, said biased resilient means contracting to automatically pivot said rafter assemblies about their common pivot axis under the influence of said contracting resilient means in the direction away from said released quick release means to automatically shift said top into open position.