Chairs and seats – Movable bottom – Tiltable
Reexamination Certificate
2008-05-12
2010-11-16
Barfield, Anthony D (Department: 3636)
Chairs and seats
Movable bottom
Tiltable
C297S327000, C297S329000
Reexamination Certificate
active
07832800
ABSTRACT:
The present invention is related to one massage chair with slant angle adjustable chair frame, primarily comprising one basic frame, one chair frame, two first connecting members, two second connecting members and one linearly retractable actuator. The basic frame comprises one base frame and two support frames arranged in parallel and stretching up from said base frame. Every support frame has one first pivot portion and one second pivot portion. The chair frame has at least one set of massage chair, comprising one seat frame with two side frames. Every said side frame has one third pivot portion and one fourth pivot portion. Every first connecting member has one top end and one bottom end. The top end is pivotally connected to the first pivot portion of the corresponding support frame. The bottom end is pivotally connected to the third pivot portion of one corresponding side frame. Every second connecting member has one top end and one bottom end. The top end is pivotally connected to the second pivot portion of one corresponding support frame. The bottom end is pivotally connected to the fourth pivot portion of one corresponding side frame. The actuator has a first end and a second end. Both ends can make relatively liner retraction. The first end is pivotally connected to the basic frame. The second end is pivotally connected to the chair frame. The basic frame, the first connecting member, the second connecting member and the chair frame are pivotally connected into a four-linkage mechanism. By means of above structural designing, the adjustment of angle slanting speed can be slowed down, and a comfortable feeling can be enhanced for the user who lies down on, or leans against the massage chair.
REFERENCES:
patent: 1941901 (1934-01-01), Knabusch et al.
patent: 3191990 (1965-06-01), Rugg et al.
patent: 6213554 (2001-04-01), Marcoux et al.
patent: 6244658 (2001-06-01), Parent et al.
patent: 7334840 (2008-02-01), Deans et al.
Barfield Anthony D
King Anthony
WPAT, P.C.
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