Joint for collapsible structures

Joints and connections – Articulated members – Lockable at fixed position

Reexamination Certificate

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Details

C403S099000, C473S421000, C473S476000

Reexamination Certificate

active

06220776

ABSTRACT:

BACKGROUND OF THE INVENTION
The invention relates to joints for use with collapsible structures. The invention has particular application to collapsible game goals. Games such as soccer, hockey and lacrosse require a goal incorporating a net. These goals are often large and not easily transportable. It is therefore inconvenient to use the same game goal to support games occurring at different times and at different locations.
The lack of mobility of the goals is a function of their size and the fact that they cannot be collapsed, folded or disassembled. Similar difficulties occur with other devices and assemblies where transportability is desirable, but the requirements of physical size and strength prevent such assemblies from being collapsed.
SUMMARY OF THE INVENTION
It is therefore an object of the invention to provide a assembly, such as a game goal, which is easily collapsible.
It is another object of the invention to provide a link for joining members of such a assembly.
These and other objects of the invention are accomplished by a joint according to the invention which facilitates collapsible structures.


REFERENCES:
patent: 4806042 (1989-02-01), Swank et al.
patent: 5178583 (1993-01-01), Rankin
patent: 5217315 (1993-06-01), Rosane
patent: 5333434 (1994-08-01), Oberman et al.
patent: 5348414 (1994-09-01), Dziuk et al.
patent: 5372562 (1994-12-01), Chang
patent: 5539957 (1996-07-01), Schmidt
patent: 5566952 (1996-10-01), Mullin et al.
patent: 5577799 (1996-11-01), St. Germain
patent: 5681231 (1997-10-01), Reeves
patent: 5681238 (1997-10-01), Minowa et al.
patent: 5746533 (1998-05-01), Schmidt

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