Vertically adjustable backboard

Games using tangible projectile – Playing field or court game; game element or accessory... – Goal or target structure for projectile; element thereof

Reexamination Certificate

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Details

C473S479000

Reexamination Certificate

active

07628717

ABSTRACT:
A vertically adjustable backboard support includes a fixed position structure to which a shiftable backboard structure is sliding attached for vertical adjustment between several selectable elevations. A torsion spring counterbalance apparatus on the fixed position structure facilitates manual shifting of the adjustable backboard structure to any of its vertically adjusted positions. A vertically disposed outer tube of the fixed position structure includes vertically spaced openings in one of its side walls for receiving a cam secured to a vertical operating rod rotatably mounted to the shiftable backboard structure for selecting and maintaining desired vertical positions of backboard adjustment.

REFERENCES:
patent: 13435 (1855-08-01), Payne
patent: 2916288 (1959-12-01), Chervenka
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patent: 4465277 (1984-08-01), Dittrich
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patent: 5671500 (1997-09-01), Balk
patent: 5800296 (1998-09-01), Shaw
patent: 5947849 (1999-09-01), Ellenbaum
patent: 6056654 (2000-05-01), Schroeder
patent: 6537162 (2003-03-01), Schroeder
patent: RE39504 (2007-03-01), Scates et al.
patent: 7306530 (2007-12-01), Connerley

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