Ball chair with a retaining device

Details Ball chair with a retaining device Ball chair with a retaining device

2006-05-16

2006-05-16

Cranmer, Laurie K. (Department: 3636)

Chairs and seats

Bottom or back

Having fluent material

C297SDIG010, C297S440100, C297S217100, C005S654000

Reexamination Certificate

active

07044558

ABSTRACT:
A ball chair with a retaining device has a seat (10), a spherical cushion (20) and two retaining pieces. The spherical cushion (20) rests on the seat (10). The two retaining pieces are selective retaining rods or retaining walls and are respectively attached to a rear end and a front end of the seat (10). Thus, the spherical cushion (20) is held between the two retaining pieces and firmly secured on the seat (10) to keep the spherical cushion (20) from falling off the ball chair.

REFERENCES:
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patent: 5690389 (1997-11-01), Ekman et al.
patent: 5833587 (1998-11-01), Strong et al.
patent: 6070943 (2000-06-01), Guery-Strahm
patent: 6146343 (2000-11-01), Stewart
patent: 6309331 (2001-10-01), Raymond
patent: 6461284 (2002-10-01), Francavilla
patent: 6477070 (2002-11-01), Schweitzer
patent: 6520578 (2003-02-01), Jospa et al.
patent: D471371 (2003-03-01), Chiu
patent: D476705 (2003-07-01), Dillard
patent: 6730005 (2004-05-01), Liao
patent: 6746372 (2004-06-01), Hsu
patent: 0563820 (1993-03-01), None

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