Land vehicles: wheels and axles – Wheel – Device for attaching wheel to axle
Reexamination Certificate
2000-06-21
2001-11-13
Morano, S. Joseph (Department: 3617)
Land vehicles: wheels and axles
Wheel
Device for attaching wheel to axle
C301S125000, C190S01800A
Reexamination Certificate
active
06315368
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a replaceable shock-proof corner wheel of a trunk, and especially to corner wheels installed at the corners of the bottom of a trunk, thereby, the trunk can be pulled conveniently. Further, by a special design, not only the shock-proof effect is provided to a trunk, but also it can be maintained conveniently.
BACKGROUND OF THE INVENTION
In general, the corners at bottom of a trunk are mounted with corner wheels for pulling the trunk by pull a telescopic pull rod. However, the installation of the corner wheels has many various variations for meeting the requirement of the users. For example, the corner wheel can rotate freely, telescopically move according to the terrain; be hidden; roll in ladder; be enhanced in stability. However, in these design, the corner wheels are retained in the trunk body fixedly and thus is lack of flexibility. Therefore, as the trunk rolls in an uneven ground, it is often large vibrations occurs. Not only the hand holds the telescopic pull rod feels uncomfortable and even the hand leaves from the pull rod so that the trunk lose of control. Moreover, the objects in the trunk will vibrate and collide with each other. Therefore, the objects unendurable to vibration will be harmed, for example, electronic products and glass products. Furthermore, the stability of the corner wheels will be destroyed and thus, noise is induced. In simply, the conventional corner wheels are poor in shock-proof. Even some corner wheels adapts spring or other elastic elements as a buffering means. However, these designs require more components and are difficult in design. In the other hand, as a trunk is used for a long time, the corner wheel is possible destroyed due to too large friction or too large vibration. But the conventional corner wheel is fixedly secured to the trunk, it is difficult to detach, maintain, and update, the normal use of the trunk will be affect so as to induce a great trouble to the user.
Therefore, there is an eager demand for a novel replaceable shock-proof corner wheel of a trunk which can improve the defects in the prior art. Not only the shock-proof effect is provided to a trunk, but also it can be maintained conveniently.
SUMMARY OF THE INVENTION
Accordingly, the primary object of the present invention is to provide a replaceable shock-proof corner wheel of a trunk, thereby, the trunk can be pulled steadier and comfortably without any noise. The safety of the contents in the trunk will not be affected and the corner wheels are retained in a steady condition.
In order to achieve the aforesaid object, the present invention provide a replaceable shock-proof corner wheel of a trunk comprises a base, a frame seat, and an elastomer. The base is fixed at corners of a bottom of a trunk body and has a receiving groove. The frame seat is externally combined to the base and has a wheel hole communicated with the receiving groove. The wheel seat comprises a wheel cover, a roller, and an elastomer and is received in the receiving groove of the base. The wheel cover is combined to the base by the covering of the frame seat and thus is confined therein. The roller is pivotally installed in the wheel cover and part of the roller protrudes out from the wheel hole of the frame seat. The elastomer is installed at a top surface of the wheel cover and is clamped between the wheel cover and the wall of the receiving groove so that the wheel seat has a buffer shock-proof elasticity with respect to the base.
Another object of the present invention is to provide a replaceable shock-proof corner wheel of a trunk, wherein the present invention can be detached and assembled rapidly so that the destroyed corner wheels can be maintained and updated rapidly.
In order to achieve the aforesaid object, the present invention provides a replaceable shock-proof corner wheel of a trunk comprising a base, a frame seat, and an elastomer. The base is fixed at corners of a bottom of a trunk body and has a receiving groove. The wheel seat comprises a wheel cover, a roller, and an elastomer and is received in the receiving groove of the base for tightly positioned. Therefore, in assembly, it is only necessary to put the wheel seat in the receiving groove and then fix the frame seat. The assembly work is easy and rapidly. On the contrary, when the roller is worn or destroyed because of using for a long time, it is only necessary to detach the frame seat, then the whole wheel seat can be maintained or updated properly.
The various objects and advantages of the present invention will be more readily understood from the following detailed description when reading in conjunction with the appended drawing.
REFERENCES:
patent: 5498010 (1996-03-01), Stube
patent: 5873145 (1999-02-01), Chou
patent: 5875519 (1999-03-01), Chou
patent: 6116196 (2000-09-01), Kuo
patent: 6167994 (2001-01-01), Kuo et al.
patent: 6193324 (2001-02-01), Chang
patent: 6231130 (2001-05-01), Chang
patent: 6253891 (2001-07-01), Miller
Chaw Khong Technology Co. Ltd.
Morano S. Joseph
Nguyen Long Bao
Rosenberg , Klein & Lee
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