Structure of scooter

Details Structure of scooter Structure of scooter

1999-12-27

2001-08-28

Swann, J. J. (Department: 3611)

Land vehicles

Wheeled

Coasters

C280S087041, C280S087043, C280S087010, C280S011270

Reexamination Certificate

active

06279930

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention herein relates to an improved structure scooter comprised of a footboard, a front wheel assembly, and a rear wheel assembly, wherein the front wheel assembly is disposed at the anterior aspect of the footboard and is equipped in the center with an extension plate of a front mounting block that, furthermore, has a support fixture mounted to each of its two sides that are each actively linked to a side connecting rod, and front wheels are installed at the lower ends of the side connecting rods, with a top connecting rod coupling their upper ends; the rear wheel assembly is disposed at the posterior aspect of the footboard and has installed at its center two rear mounting blocks with a support fixture of an actively linked side connecting rod installed to each of their two sides, and rear wheels are installed to the lower ends of the side connecting rods, the upper ends of which are coupled by a top connecting rod, and positional return springs are installed between the center of each connecting rod and support fixture.
2. Description of the Prior Art
Referring to FIG.
1
and
FIG. 2
, the conventional product is comprised of a spherical handle
41
, a topside stem
4
, a mounting device
46
, a splayed forward frame
40
, front wheels
42
, a footboard
44
, a rear wheel
43
, and springs
45
, of which the splayed forward frame
40
is disposed at the anterior aspect of the footboard
44
and mounted to each of its two sides is a wheel block
400
that provides for the installation of the front wheels
42
, and situated in the center area of the splayed frame
40
are compression springs
45
each positioned against the interior sides of a wheel block
400
; the topside stem
4
is disposed at the upper extent of the splayed forward frame
40
and a spherical handle
41
positioned at the upper end of the topside stem
4
, and a mounting device
46
is situated between the splayed forward frame
40
and the topside stem
4
; and a single rear wheel
43
is installed in the center posterior aspect of the footboard
44
; since the structural design of the conventional product is not sound, its operation involves the manual grasping of the spherical handle
41
of the topside stem
4
to control the scooter to the left or right such that when the topside stem
4
is leaned to one side, this results in the application of pressure against the wheel at one side of the front wheels
42
which causes the springs
45
on one side to compress and alter direction, but since the wheel on the other side of the front wheels
42
continues in a straight line, both of the two front wheels
42
are incapable of effectively deflecting synchronously, resulting in rough and unresponsive operating control which not only subjects the front wheels
42
to damaging wear and thus significantly diminishes their usable service life, but also increases the likelihood of hazardous accidental collisions with vehicles, walls, power line poles, people, and animals because immediate changes in direction cannot be executed; in addition, since swerving is manually accomplished by a single hand on the topside stem
4
to control the application of pressure onto the springs
45
, with virtually no assistive control provided for by the footboard
44
, the grip of a single hand for control and the exerted force thereof in combination with a three-wheel structure is inconvenient, unstable, time- and energy-wasting and, furthermore, easily results in an improperly biased application of force angle and consequent toppling; such shortcomings have always irritated and troubled consumers and, therefore, the necessity of the providing an improve structured scooter is the motive of the invention herein.
SUMMARY OF THE INVENTION
The primary objective of the invention herein is to provides an improved structure scooter capable of responsive and stable, time- and energy-saving, as well as safe and convenient operation and utilization.
To enable a further understanding of the technological content, innovative aspects, and functionality of the present invention, the brief description of the drawings below is followed by the detailed description of the preferred embodiments.


REFERENCES:
patent: 1499448 (1924-07-01), Crawford
patent: 3746118 (1973-07-01), Altorfer
patent: 4054297 (1977-10-01), Solimine
patent: 4659095 (1987-04-01), Halvorsen
patent: 5169166 (1992-12-01), Brooks
patent: 5330214 (1994-07-01), Brooks
patent: 5536029 (1996-07-01), Gramckow
patent: 5225320 (1977-02-01), None

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