Chairs and seats – Movable back – Tiltable
Reexamination Certificate
2007-03-13
2007-03-13
Nelson, Jr., Milton (Department: 3636)
Chairs and seats
Movable back
Tiltable
C297S383000, C297SDIG010
Reexamination Certificate
active
11103522
ABSTRACT:
A backupholstery adjustment device for a wheelchair includes a wheelchair having a horizontally and/or obliquely adjusted backupholstery which has a pair of upper positioning rods and a pair of lower positioning rods spacedly secured to a plurality of V-shaped linking plates on inward arcuate lateral sides thereof, a pair of upper and a pair of lower adjustment pieces respectively secured to the upper and lower portions of a pair of L-shaped handles through a plurality of clamping plates. The upper adjustment pieces each has a slit abutting a stopping portion in the top insertable by the pair of upper positioning rods and a plurality of grooves formed inside for selectively engaging the upper positioning rods. The lower adjustment pieces each has a slit abutting a stopping portion, too, insertable by the pair of lower positioning rods and a single groove engageable within the lower positioning rods. In an alternate arrangement, both the upper and lower adjustment pieces having a plurality of positioning grooves.
REFERENCES:
patent: 5593211 (1997-01-01), Jay et al.
patent: 5603682 (1997-02-01), Grider
patent: 5848824 (1998-12-01), Mocur
patent: 5906416 (1999-05-01), Rasmussen
patent: 5944385 (1999-08-01), Pearce
patent: 6095612 (2000-08-01), Man
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