Land vehicles – Skates – Wheeled skate
Reexamination Certificate
2000-04-17
2001-12-11
Swann, J. J. (Department: 3611)
Land vehicles
Skates
Wheeled skate
C280S011233, C280S011270, C036S115000
Reexamination Certificate
active
06328318
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to a roller skate, and more particularly to a dual-purpose roller skate which can be converted for use as an ordinary shoe.
BACKGROUND OF THE INVENTION
As shown in
FIG. 1
, a dual-purpose roller skate of the prior art comprises a bottom plate
1
which is attached to the underside of a main body (not shown in the drawing). The bottom plate
1
is provided in the underside thereof with two protrusions
2
corresponding in location to the toe portion and the heel portion of the bottom plate
1
. The bottom plate
1
is disposed in an outsole
3
which is provided therein with two receiving cells
4
for receiving the two protrusions
2
. Two roller sets
5
are fastened with the two protrusions
2
by a plurality of fastening screws. The roller sets
5
are formed of a fastening seat
6
, a pivoting seat
7
, and a wheel
8
which can be extracted from or retracted into the receiving cell
4
. The two wheels
8
are extracted to enable the dual-purpose roller skate to be used as a roller skate. The two wheels
8
are retracted into the receiving cells
4
of the outsole
3
at such time when the dual-purpose roller skate is to be used as an ordinary footwear.
Such a prior art dual-purpose roller skate as described above is defective in design in that the outsole
3
is so thick as to accommodate the two roller sets
5
at the expense of the pliability of the outsole
3
. In addition, the excessive thickness of the outsole
3
gives an added weight to the roller skate. Moreover, the extraction or retraction of the wheel
8
is done with finger which is apt to be soiled with dirt or even injured.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a dual-purpose roller skate free from the drawbacks of the dual-purpose roller skate of the prior art.
In keeping with the principle of the present invention, the foregoing objective of the present invention is attained by a dual-purpose roller skate comprising a boot, a sole plate provided in the underside thereof with two receiving compartments, and two wheel sets, with each comprising a wheel seat, a wheel frame, a wheel, an adjustment device, and a locating device. The wheel seat is mounted in the receiving compartment. The wheel frame is fastened pivotally with the wheel seat by the adjustment device. The wheel is pivoted to the wheel frame which can be actuated to swivel by an external force exerting on the adjustment device. The locating device is used to locate the wheel frame in the wheel seat.
REFERENCES:
patent: 3884485 (1975-05-01), Walle
patent: 3979842 (1976-09-01), Texidor
patent: 3983643 (1976-10-01), Schreyer et al.
patent: 5398970 (1995-03-01), Tucky
patent: 5785327 (1998-07-01), Gallant
patent: 5797609 (1998-08-01), Fichepain
patent: 5882018 (1999-03-01), Petrosino
patent: 6042125 (2000-03-01), Wu
patent: 6120039 (2000-09-01), Clementi
patent: 6247708 (2001-06-01), Hsu
Browdy and Neimark
Hsu Yi-Chuan
Shriver J. Allen
Swann J. J.
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