Chairs and seats – Bottom or back with means to alter contour – Providing support for lower back region
Patent
1999-03-02
2000-02-29
Nelson, Jr., Milton
Chairs and seats
Bottom or back with means to alter contour
Providing support for lower back region
2972841, A47C 3025
Patent
active
060300418
ABSTRACT:
A back pad adjusting structure comprises a back pad, a U shape frame and a guide wire; characterized in that: the back pad is a flexible plate, two sides of the back pad have protrusions, connection portions with screw holes are formed on the two sides of the lower end thereof, a supporting plate extending upwards is mounted on the center portion of the back pad and the top end thereof has an L shape, and slit is formed on the center of the supporting plate; and the U shape frame is formed by an U shape rod penetrating through the two ends of the inverse shape plate, the inverse U shape has holes respective screw holes; and a back pad adjusting structure. By the aforementioned structure, the U shape rod of the U shape frame is penetrated through the long holes on the upper and lower sides of the back pad so that the connection portion of the back pad with the frame plate through screws forms a back pad structure. Thereby, the convex portion of another end of the guide wire passes through the pillar hole below the supporting plate, and then further passes through the slit so as to be buckled within the receiving groove, so that the arc of the back pad can be adjusted, thus the user may adjust the back pad as desired.
REFERENCES:
patent: 5335965 (1994-08-01), Sessini
patent: 5567011 (1996-10-01), Sessini
patent: 5651583 (1997-07-01), Klingler et al.
patent: 5704687 (1998-01-01), Klingler
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