Chairs and seats – Movable bottom – Movable independently of back
Reexamination Certificate
2009-08-13
2011-10-18
Brown, Peter R. (Department: 3636)
Chairs and seats
Movable bottom
Movable independently of back
C297S339000, C297S344170, C297SDIG010
Reexamination Certificate
active
08038216
ABSTRACT:
The portable seat is positioned on the two seat rail tubes of a standard wheelchair with brackets. The seat has a lower frame and an upper frame having four pivoted legs slidably mounted in channels. A horizontal arm connects the two front legs at the lower part thereof and has a pivoting and threaded drive nut. Another horizontal arm connects the two rear legs at the lower part thereof and has a pivoting and threaded drive nut, being oppositely threaded. A drive screw is mounted to both drive nuts and when rotated the legs are pushed together to raise the seat thereon. As an additional feature, a tilt seat section may be attached to the upper frame causing the seat to tilt forward allowing the user too more easily dismount. This feature may be activated when the seat is or is not elevated. Appropriate electronics operates the portable seat.
REFERENCES:
patent: 722166 (1903-03-01), Taft
patent: 2678087 (1954-05-01), McKinley
patent: 2821242 (1958-01-01), Manegold
patent: 3022037 (1962-02-01), Stallard
patent: 3250569 (1966-05-01), Gaffney
patent: 3807795 (1974-04-01), Weant et al.
patent: 5695248 (1997-12-01), Bell
patent: 7341310 (2008-03-01), Ross
patent: 2003/0011229 (2003-01-01), Bell
patent: 2006/0087166 (2006-04-01), Trippensee et al.
Brown Peter R.
Collier, Esq. Stan
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