Land vehicles – Skates – Wheeled skate
Reexamination Certificate
2001-03-01
2002-04-02
Mar, Michael (Department: 3619)
Land vehicles
Skates
Wheeled skate
C036S115000, C280S007130
Reexamination Certificate
active
06364322
ABSTRACT:
BACKGROUND OF THE PRESENT INVENTION
1. Field of Invention
The present invention relates to a roller skate shoe, and more particularly to a wheel lock releaser arrangement for roller skate shoe, wherein the wheel lock releaser arrangement normally locks up a wheel frame of the roller skate shoe in a rotatably manner so as to prevent the wheel frame from being slid unintentionally and accidentally.
2. Description of Related Arts
Nowadays, roller skates are well known and have been considered as a formed of transportation, recreation, and exercise. Conventional roller skates each comprises a roller device permanently installed thereunder such that a player must carry an extra pair of shoe for interchange purpose, which is a hassle for the player.
As shown in
FIG. 1
, an improved pair of roller skate shoes is adapted for solving the above problem. Each roller skate shoe comprises a base
1
A having two chambers
10
A provided thereon and two roller devices
2
A foldably received in the chambers
10
A respectively in such a manner that the roller device
2
A is folded into the chamber
10
A for storage and unfolded out of the chamber
10
A for usage. So, the player does not have to carry an extra pair of shoes everywhere. Each roller device
2
A comprises an U-shaped supporting frame
21
A under the base
1
A of the roller skate shoe within the chamber
10
A comprising a shaft
211
A transversely mounted on the supporting frame
21
A, and an U-shaped wheel frame
22
A rotatably mounted on the shaft
211
A comprising a wheel axle
221
A transversely mounted on the wheel frame
22
A wherein a wheel
222
A is rotatably supported on the wheel axle
221
A in such a manner that the wheel frame
22
A is adapted for rotatably folding in the chamber
10
A for storage purpose and rotatably folding out of the chamber
10
A for use.
Such roller skate shoe further comprises locking means
23
A mounted on the shaft
211
A of the supporting frame
21
A for locking the wheel frame
22
A in position. The locking means
23
A comprises a locker arm
231
A slidably mounted on the shaft
211
A of the supporting frame
21
A wherein the locker arm
231
A has a locking tip
2311
A for blocking a rotational movement of the wheel frame
22
A by the supporting frame
21
A, and a compression spring
24
A, which is coaxially mounted on the shaft
211
A, having two ends biasing against the locker arm
231
A and the wheel frame
22
A for urging and retain the locker arm
231
A in a locking position. In order to use the roller skate shoe, the player must use his or hand to pull the wheel frame
22
A out of the chamber
10
A in a rotatably movable manner until the locking tip
2311
A of the locker arm
231
A slid out of the supporting frame
21
A so as to lock up the wheel frame
22
A in position. For unlocking the wheel frame
22
A, the player must use his or her hand again to push the locker arm
231
A aside until the locking tip
2311
A is moved away from the supporting frame
21
A and then push the wheel frame
22
A back into the chamber
10
A.
While the foregoing disclosure of the conventional roller skate shoes, the shoes have several drawbacks. Each roller device
2
A must have a relative larger size in order to rigidly support a downward force which is the weight of the player. In other words, the roller device
2
A requires a bigger chamber
10
A, especially the depth thereof, to fittedly store the roller device
2
A therein such that the shoe must be increase its size and weight, which is an unreasonable afford for the player especially for a young child.
Thus, since the contacting area of the shoe is between the wheel
222
A and the ground, the size of the wheel
222
A is a main factor for stable manner. However, the wheel frame
22
A can only carry one wheel
222
A such that when a bigger wheel
222
A is used, the size of the wheel frame
22
A must be bigger than the size of the wheel
222
A, which will create the storage drawback as mentioned above. When a smaller wheel
222
A is used, the young player may easily lose his or her balance so as to cause an unwanted injury to the young player. In fact, the U-shaped wheel frame
22
A cannot provide a rigid structure for the wheel
222
A supporting thereon so that the wheel frame
22
A may be easily broken when an external force, such as a collusion force, exerted on the wheel frame
22
A and cause major injury to the young player.
Moreover, the locking means
23
A cannot securely hold the wheel frame
22
A in order to prevent an unwanted rotational movement thereof. Since a coil spring
25
A is used for retaining the wheel frame
22
A rotatably sliding out of the chamber
10
A, the locker arm
231
A is also forced to push of the supporting frame
21
A to lock up the wheel frame
22
A as well. So, the wheel frame
22
A may only be blocked to slide back to the chamber
10
A until the locker arm
231
A hits the supporting frame
21
A such that an unwanted rotational movement of the wheel frame
22
A will cause an unbalance of the roller skate shoe. Also, in the locked position, the locker arm
231
A must be strong enough to bias against the rotating force of the wheel frame
22
A. It is worth to mention that the rotating force will proportionally increase when the radially distance from the center is increased. In other words, the longer length of the locker arm
231
A is, the greater rotational force of the locker arm
231
A must be afforded. So, the locker arm
231
A must be rigid enough to lock up the rotation of the wheel frame
22
A.
Furthermore, the player must use his or her hand to pull out the wheel frame
22
A and unlock the wheel frame
22
A every time for use and storage respectively. It is a hassle for the player because the player must touch the wheel
222
A even though the wheel
222
A is dirty. Also, some players may have difficulties to bend down their body to fold and unfold the roller device
2
A due to their physical abilities. They may merely take off their shoes to operate the folding and unfolding process. It is unreasonable that they have to take off their shoes every time, which is the same as the conventional roller skates.
SUMMARY OF THE PRESENT INVENTION
A main object of the present invention is to provide a wheel lock releaser arrangement for roller skate shoe for normally locking up a wheel frame of the roller skate shoe so as to prevent the wheel frame from being slid unintentionally and accidentally.
Another object of the present invention is to provide a wheel lock releaser arrangement for roller skate shoe which comprises a locking means for locking up a wheel frame in position wherein an operation button is provided on an outer surface of the shoe for unlocking the wheel frame. In other words, the player does not require his or her hands to touch the wheels in order to unlock the wheel frame.
Another object of the present invention is to provide a wheel lock releaser arrangement for roller skate shoe wherein the locking means locks up the wheel axle by means of engagement so as to minimize the rotational force exerted on the locking means. In other words, the locking means can securely lock up the roller device in position.
Another object of the present invention is to provide a wheel lock releaser arrangement for roller skate shoe wherein each roller arrangement of the roller skate shoes comprises a pair of wheels rigidly supported on a wheel axle for increasing a contacting area between the wheels and the ground so as to provide a stable manner for a player.
Another object of the present invention is to provide a wheel lock releaser arrangement for roller skate shoe wherein each roller arrangement has relative small size and shape so as to reduce the size and weight of the shoe, which can also minimize the cost of the shoe as well.
Accordingly, in order to accomplish the above objects, the present invention provides a wheel lock releaser arrangement for roller skate shoe, which comprises:
a shoe base having two receiving cavities provided thereunder at a front portion and a rear portion of the shoe base respectively whe
Chan Raymond Y.
David and Raymond Patent Group
Mar Michael
LandOfFree
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