Land vehicles – Wheeled – Coasters
Reexamination Certificate
2000-03-24
2001-06-12
Swann, J. J. (Department: 3611)
Land vehicles
Wheeled
Coasters
C280S655100, C280S087050, C403S083000
Reexamination Certificate
active
06244605
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a skate cart which has a board and a handlebar stem pivotably connected to a front end of the board by a pivotal mechanism. The pivotal mechanism has a rod movably inserted through the board and the stem so as to control a folding feature of the skate cart.
BACKGROUND OF THE INVENTION
A conventional skate cart generally includes a board for a user standing thereon, a handlebar stem connected to a front end of the board, a front wheel connected to a lower end of the handlebar stem, and a rear wheel connected to a bottom of a rear end of the board. The user may step one foot on the board and kick the ground by the other foot to gain a forward force to let the skate cart move. In order to have a convenient storage feature for the skate cart, a pivotal mechanism is used to connect the board and the handlebar stem so that the handlebar stem may be collapsed toward the board to let the skate cart have a compact size which is convenient to be carried and stored. Nevertheless, the conventional pivotal mechanism is experienced to include too many parts that consist a complex structure and therefore need frequent maintenance. Furthermore, in the conventional pivotal mechanism, many parts are frictionally moved with each other when operating the pivotal mechanism so that wearing problems limit the term of use.
The present invention intends to provide a pivotal mechanism that employs a rod movably inserted between the handlebar stem and the connection port of the board so that the user simply pulls the rod to collapse the skate cart.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided a skate cart and comprises a board
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with a rear wheel on a rear end of the board and a connection port extending from a front end of the board. The connection port has two lugs and one of the lugs has an aperture defined therethrough. A cap extends from an outside of the one of the lugs and encloses the aperture. The cap has a retaining hole defined through an end of the cap. A handlebar stem is pivotably engaged between the two lugs at a lower end of the handlebar stem and a passage is defined through the lower end of the handlebar stem. A rod has a flange extending radially outward therefrom and a threaded recess is defined in one of two ends of the rod. The rod is movably inserted through the cap and disengagably engaged with the passage of the second end of the handlebar stem. A spring is mounted to the rod and biased between the flange and the cap. A bolt is threadedly engaged with the threaded recess of the rod so that when pulling the bolt, the rod is disengaged from the second passage.
The object of the present invention is to provide an easily operating pivotal mechanism for connecting the handlebar stem and the board of a skate board. The user pulls a rod to allow the handlebar stem to be pivoted relative to the board.
REFERENCES:
patent: 704321 (1902-07-01), Greenwood
patent: 1227888 (1917-05-01), Converse
patent: 4310166 (1982-01-01), Eicher
patent: 5277427 (1994-01-01), Bryan et al.
patent: 5927733 (1999-07-01), Banda
patent: 6120044 (2000-09-01), Tsai
patent: 6158751 (2000-12-01), Wu et al.
Kalloy Industrial Co., Ltd.
McClellan James S.
Rosenberg , Klein & Lee
Swann J. J.
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