Surgery: kinesitherapy – Kinesitherapy – Device with applicator having specific movement
Reexamination Certificate
2002-04-30
2003-09-23
DeMille, Danton D. (Department: 3764)
Surgery: kinesitherapy
Kinesitherapy
Device with applicator having specific movement
C601S100000, C601S102000, C601S103000, C601S116000
Reexamination Certificate
active
06623438
ABSTRACT:
RELATED U.S. APPLICATIONS
Not applicable.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Not applicable.
REFERENCE TO MICROFICHE APPENDIX
Not applicable.
FIELD OF THE INVENTION
The present invention relates generally to a massaging device, and more particularly to a massaging device which is designed to knead the muscles in a stiff back, so as to make the muscles supple.
BACKGROUND OF THE INVENTION
As shown in
FIGS. 1 and 2
, a massaging device of the prior art is used to massage the muscles in a stiff back and is formed of a base
11
, a transmission rod
13
, a sliding seat
16
, and a plurality of massaging rollers
18
. The base
11
is provided with a pad
10
. The transmission rod
13
has outer threads
12
and is pivoted with the base
11
. The transmission rod
13
is driven by a motor
14
to actuate the sliding seat
16
to slide along a track
15
. The rollers
18
are pivotally fastened with two roller frames
17
which are mounted on the sliding seat
16
. As the sliding seat
16
is actuated by the transmission rod
13
to slide up and down, the massaging rollers
18
move along to rub back muscles of the human body.
Such a prior art massaging device as described above is defective in design because the roller frame
17
is balanced on a support at the middle such that when the massaging rollers
18
at one end go up, the massaging rollers
18
at the other end comes down. Such an up-and-down movement of the massaging rollers
18
does not bring about an effective action of massaging the back muscles. In addition, the massaging rollers
18
are driven to move along the curved surface of the back of the human body, without pressure and friction. As a result, the action of the massaging rollers
18
is not effective in making the stiff back muscles supple. Moreover, the moving path of the massaging rollers
18
does not conform to the curvature of the back.
BRIEF SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a device capable of massaging effectively the muscles in a stiff back.
In keeping with the principle of the present invention, the foregoing objective of the present invention is attained by a massaging device comprising a base, a transmission member, a driving member, a slide seat, and a plurality of roller sets. The slide seat is actuated by the transmission member to move up and down along a track of the base. The slide seat is provided in two opposite sides thereof with a swivel rod pivoted therewith. The roller sets are pivotally mounted on two longitudinal ends of the swivel rod. The swivel rod is provided at the middle with a movable joint and is divided into a front swing rod and a rear swing rod, which are capable of swiveling independently. As the front swing rod and the rear swing rod move along a curved surface of the track, the rollers move over the back muscles with pressure and friction.
REFERENCES:
patent: 5755677 (1998-05-01), Masuda et al.
patent: 6039705 (2000-03-01), Wu
patent: 6071252 (2000-06-01), Marcantoni
patent: 6196983 (2001-03-01), Wu
patent: 6551259 (2003-04-01), Wu
DeMille Danton D.
Harrison & Egbert
Thanh Quang D
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