Size adjustable in-line roller skate

A size adjustable in-line roller skate includes: a chassis having a plurality of wheels linearly rotatably mounted under the chassis, a toe box member for enclosing a wearer's toes slidably engageable with and adjustably secured on a front portion of the chassis, and a heel enclosing member for enclosing the wearer's heel slidably engageable with and adjustably secured on a rear portion of the chassis, whereby upon a forward or backward movement of either the toe box member or the heel enclosing member, or both member's along the chassis, different lengths of the skate can be adjusted for obtaining the desired size of the wearer's foot or footwear for a comfortable skating.

BACKGROUND OF THE INVENTION 
A conventional in-line roller skate is made as fixed type, which is not 
adjustable for meeting different sizes of a wearer especially a teenager 
who is growing up and gradually increasing his or her foot size. 
For manufacturing the skates of different sizes, it is necessary to provide 
diversified molds for different sizes of skates, thereby increasing 
investment and production cost. 
The present inventor has found the drawbacks of the conventional in-line 
roller skate and invented the present in-line roller skate for adjusting 
different sizes or length for the skate wearer. 
SUMMARY OF THE INVENTION 
The object of the present invention is to provide a size adjustable in-line 
roller skate including: a chassis having a plurality of wheels linearly 
rotatably mounted under the chassis, a toe box member for enclosing a 
wearer's toes slidably engageable with and adjustably secured on a front 
portion of the chassis, and a heel enclosing member for enclosing the 
wearer's heel slidably engageable with and adjustably secured on a rear 
portion of the chassis, whereby upon a forward or backward movement of 
either the toe box member or the heel enclosing member, or both members 
along the chassis, different lengths of the skate can be adjusted for 
obtaining the desired size of the wearer's foot or footwear for a 
comfortable skating.

DETAILED DESCRIPTION 
As shown in FIGS. 1-5, the present invention comprises: a chassis 1 having 
a plurality of wheels 5 linearly rotatably mounted under the chassis 1; a 
toe box member 2 slidably engageable with and adjustably secured on a 
front portion of the chassis 1 for wearing a wearer's toes within the toe 
box member 2; and a heel enclosing member 3 slidably engageable with and 
adjustably secured on a rear portion of the chassis 1. Upon a sliding 
movement of the toe box member 2 and the heel enclosing member 3 on the 
chassis 1, a suitable length between the toe box member 2 and the heel 
enclosing member 3 is obtained to meet a size of a wearer's foot or 
footwear for his or her comfortable wearing. 
A rear shield or cuff 4 is pivotally secured to the heel enclosing member 3 
by a pair of pivots 41 for protecting the wearer's heel portion. 
A plurality of buckle means 6 may be provided on the present invention for 
firmly fastening the toe box member 2, a central portion of the chassis 1, 
the heel enclosing member 3, and the rear shield 4 on a wearer's foot or 
sporting footwear 8 (FIG. 7) as worn on the wearer's foot. An inner lining 
7 may be inserted in the skate of the present invention (as shown in FIG. 
6) for protecting a wearer's foot not worn with the sporting footwear 8. 
The chassis 1 includes: a front groove 11 longitudinally recessed in a 
front portion of the chassis 1 having a plurality of screw holes 101 
linearly formed in the front groove 11 each screw hole 101 inserted 
therein by a screw 10 for fixing the toe box member 2 on the front portion 
of the chassis 1, a rear groove 12 longitudinally recessed in a rear 
portion of the chassis 1 having a plurality of screw holes 101 linearly 
formed in the rear groove 12 each screw hole 101 insertable therein by a 
screw 10 for fixing the heel enclosing member 3 on the rear portion of the 
chassis, a bracket 13 protruding downwardly from the chassis 1 for 
rotatably mounting the wheels 5 on the bracket 13 by axles 51, a pair of 
side flaps 14 disposed on two opposite side portions of the chassis 1 each 
side flap 14 formed with a fastening slot 141 therein for securing a strap 
fastener 15 of the buckle means 6 in the slot 141 for fastening the buckle 
means 6 across the central portion of the chassis of the roller skate. 
The toe box member 2 includes: a front extension 20 longitudinally formed 
on a rear bottom portion of the toe box member 2 and slidably engageable 
with the front groove 11 in the chassis 1, a plurality of screw holes 22 
linearly formed in the toe box member 2 and formed through the front 
extension 20 for fixing each screw 10 through the screw hole 22 in the toe 
box member 2 and through the screw hole 101 formed in the chassis 1 for 
fixing the toe box member 2 on the chassis 1 as locked by a nut 102 
embedded or "planted" in the chassis (FIG. 4) or retained on a bottom of 
chassis 1 (FIG. 3), at least a side expansion slot 24 and a central 
expansion slot 25 notched in the toe box member 2 and expansible for 
enclosing a sporting footwear 8 as shown in FIG. 7, a plurality of strap 
fastening slots 26 formed in the toe box member 2 for securing a strap of 
the buckle means 6 therein, and a plurality of strap fasteners 27 formed 
on the toe box member 2 for firmly fastening the buckle means 6 on the toe 
box member 2. 
The heel enclosing member 3 includes: a rear extension 30 longitudinally 
formed on a front bottom portion of the heel enclosing member 3 and 
slidably engageable with the rear groove 12 in the chassis 1, a plurality 
of screw holes 32 linearly formed in the heel enclosing member 3 and 
formed through the rear extension 30 for fixing each screw 10 through the 
screw hole 32 in the heel enclosing member 3 and through the screw hole 
101 formed in the chassis i for fixing the heel enclosing member 3 on the 
chassis 1 as locked by a nut 102 embedded or "planted" in the chassis or 
retained on a bottom of chassis 1 (FIG. 3), a plurality of strap fastening 
slots 34 formed in the heel enclosing member 3 for securing a strap of the 
buckle means 6 therein for firmly fastening the buckle means 6 on the heel 
enclosing member 3, and a pair of pivot holes 35 formed in the heel 
enclosing member 3 for pivotally securing the rear shield 4. 
The toe box member 3 further includes: an elongated recess 21 
longitudinally recessed in the toe box member 2 to communicate with the 
plurality of screw holes 22 formed through the front extension 20 of the 
toe box member 2 and a plurality of enlarged recesses 23 each communicated 
with and positioned above each screw hole 22 for holding a screw head 
portion of the screw 10 when inserted in the screw holes 22, 101 for 
fixing the toe box member 2 on the chassis 1 as shown in FIGS. 2, 3, 4. 
The elongated recess 21 is provided for eliminating a stress when the 
skate of the present invention is worn by a skate player's foot or his 
(her) footwear. 
The numbers of the screws 10 and of the screw holes 22, 32 in the present 
invention are not limited. The buckle means 6 may also be provided on the 
rear shield 4 for fastening the rear shield 4 for protecting a wearer's 
ankle portion. The material for making the toe box member 2 and the heel 
enclosing member 3 is preferably same as that of the chassis for obtaining 
a harmonic mechanical strength of the skate. 
The heel enclosing member 3 also includes: an elongated recess 31 
longitudinally recessed in the heel enclosing member 3 to communicate with 
the plurality of screw holes 33 formed through the rear extension 30 of 
the heel enclosing member 3 and a plurality of enlarged recesses 33 each 
communicated with and positioned above each screw hole 32 for holding a 
screw head portion of the screw 10 when inserted in the screw holes 32, 
101 for fixing the heel enclosing member 3 on the chassis 1 as shown in 
FIGS. 3, 4. The elongated recess 31 is also provided for eliminating a 
stress as worn by a skate player. 
The present invention may be modified without departing from the spirit and 
scope as claimed hereinafter. 
The present invention is superior to the conventional fixed type in-line 
roller skate because it can be adjustable for obtaining a suitable size 
for a comfortable wearing on a player's foot or sporting footwear already 
worn on the foot of the player. Also, the mold cost can be saved for 
reducing the investment and production cost for a manufacturer.