SUSPENSION LIFT KIT FOR QUAD CYCLE

ENSEMBLE DE RELEVEMENT DE SUSPENSION POUR QUAD

English Abstract

A lift kit for the suspension strut of a Quad ATV cycle including an
upstanding sleeve with an upper edge with a collar of reduced diameter
defining an
upwardly facing annular shoulder at a bottom of the collar, a shock absorber
inserted
in the sleeve, a washer sitting on the annular shoulder and a coil spring
sitting on the
washer where the lift kit includes a sleeve member having a bottom collar and
an
upstanding portion therefrom where the bottom collar has an exterior surface
with a
diameter greater than that of the upstanding portion and a nut engaged onto
the
male screw thread on the and being movable to different set portions of a top
surface of the nut along the male screw thread on the upstanding portion, the
nut
having an upper face supporting a bottom of the spring.

Claims

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CLAIMS:
1. A lift kit apparatus for a suspension strut of a Quad ATV
cycle
where the suspension comprises:
a suspension strut including an upstanding sleeve having an exterior
cylindrical surface and an interior cylindrical surface;
the sleeve having an upper edge with a collar of reduced exterior
diameter on the exterior surface at the upper edge and defining an upwardly
facing
annular shoulder at a bottom of the collar;
a shock absorber having a cylindrical body inserted in the sleeve as a
sliding fit within the cylindrical interior surface and standing upwardly from
the upper
edge;
a washer for sitting on the annular shoulder;
and a coil spring having a bottom turn for sitting on the washer and
having an interior dimension arranged to surround the collar and the shock
absorber;
wherein the lift kit comprises:
a sleeve member having an interior surface, an exterior surface, a top
edge and a bottom edge;
the sleeve member having a bottom collar and an upstanding portion
therefrom;
wherein the bottom collar has an exterior surface with a diameter
greater than that of the upstanding portion;

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the interior surface of the upstanding portion being of a diameter
substantially equal to that of the cylindrical interior surface of the
suspension strut to
receive the shock absorber therein;
the interior surface of the bottom collar being of increased diameter
relative to the interior surface of the upstanding portion so as to engage
over the
collar portion of the suspension strut and so as to sit on the washer;
the upstanding portion having a male screw thread on the exterior
surface thereof;
the exterior surface of the upstanding portion having a diameter
arranged to receive the spring thereon;
a nut having a female screw thread for engaging onto the male screw
thread and being movable to different set portions of a top surface of the nut
along
the male screw thread;
the nut having an upper face arranged for engaging and supporting a
bottom of the spring so that the bottom turn of the spring can be lifted from
the
washer onto the top surface of the nut so as to lift the spring to provide a
lift of the
suspension.
2. The apparatus according to claim 1 an exterior surface of the
nut and the bottom collar is substantially equal.
3. The apparatus according to claim 1 an exterior surface of the
nut and the bottom collar each include notches for engaging a wrench for
rotation of
the nut relative to the bottom collar.

Description

CA 02833410 2013-11-15
SUSPENSION LIFT KIT FOR QUAD CYCLE
This invention relates to a lift kit for attachment to the suspension
system of a quad ATV cycle and particularly of a Polaris ATV.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a lift kit for attachment
to the suspension system of a quad ATV cycle and particularly of a Polaris ATV
According to the invention there is provided a lift kit apparatus for a
suspension strut of a Quad AN cycle where the suspension comprises:
a suspension strut including an upstanding sleeve having an exterior
cylindrical surface and an interior cylindrical surface;
the sleeve having an upper edge with a collar of reduced exterior
diameter on the exterior surface at the upper edge and defining an upwardly
facing
annular shoulder at a bottom of the collar;
a shock absorber having a cylindrical body inserted in the sleeve as a
sliding fit within the cylindrical interior surface and standing upwardly from
the upper
edge;
a washer for sitting on the annular shoulder;
and a coil spring having a bottom turn for sitting on the washer and
having an interior dimension arranged to surround the collar and the shock
absorber;
wherein the lift kit comprises:
a sleeve member having an interior surface, an exterior surface, a top
edge and a bottom edge;

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the sleeve member having a bottom collar and an upstanding portion
therefrom;
wherein the bottom collar has an exterior surface with a diameter
greater than that of the upstanding portion;
the interior surface of the upstanding portion being of a diameter
substantially equal to that of the cylindrical interior surface of the
suspension strut to
receive the shock absorber therein;
the interior surface of the bottom collar being of increased diameter
relative to the interior surface of the upstanding portion so as to engage
over the
collar portion of the suspension strut and so as to sit on the washer;
the upstanding portion having a male screw thread on the exterior
surface thereof;
the exterior surface of the upstanding portion having a diameter
arranged to receive the spring thereon;
a nut having a female screw thread for engaging onto the male screw
thread and being movable to different set portions of a top surface of the nut
along
the male screw thread;
the nut having an upper face arranged for engaging and supporting a
bottom of the spring so that the bottom turn of the spring can be lifted from
the
washer onto the top surface of the nut so as to lift the spring to provide a
lift of the
suspension.

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Preferably an exterior surface of the nut and the bottom collar is
substantially equal.
Preferably an exterior surface of the nut and the bottom collar each
include notches for engaging a wrench for rotation of the nut relative to the
bottom
collar.
BRIEF DESCRIPTION OF THE DRAWINGS
One embodiment of the invention will now be described in conjunction
with the accompanying drawings in which:
Figure 1 is an exploded view of the lower suspension components of a
suspension of a Polaris Quad ATV cycle for supporting the frame from the wheel

with the lift of the present invention omitted.
Figure 2 is a cross-sectional view of the lift apparatus of the present
invention in place on the suspension of Figure 1.
Figure 3 is a side elevational view of the sleeve member of the lift
apparatus of the present invention.
Figure 4 is a top plan view of the sleeve member of the lift apparatus of
the present invention.
Figure 5 is a side elevational view of the nut of the lift apparatus of the
present invention.
Figure 6 is a top plan view of the nut of the lift apparatus of the present
invention.

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In the drawings like characters of reference indicate corresponding
parts in the different figures.
DETAILED DESCRIPTION
A suspension of a Quad ATV cycle is shown in Figure 1 in exploded
form and comprises a suspension strut 10 including an upstanding sleeve 11.
The
strut 10 is connected to the wheel (not shown) at a mounting 12 shown
schematically in Figure 2 and the suspension is connected at the upper end 20
the
frame again shown schematically in Figure 2 at 13.
The sleeve 11 has an exterior cylindrical surface 14 and an interior
cylindrical surface 15 with an upper edge 16 having a collar 17 of reduced
exterior
diameter on the exterior surface at the upper edge and defining an upwardly
facing
annular shoulder 18 at a bottom of the collar 17.
A shock absorber 19 having a cylindrical body 20 is inserted in the
sleeve as a sliding fit within the cylindrical interior surface 15 and
standing upwardly
from the upper edge 16 to provide a piston 21 engageable with the frame in a
shock
absorbing action.
A washer 22 sits on the annular shoulder and a coil spring 23 has a
bottom turn 24 for sitting, in the conventional arrangement of Figure 1, on
the
washer 22 and has an interior dimension of the spring arranged to surround the
collar 17 and the shock absorber cylindrical body 20.;
The lift kit 30 comprises a sleeve member 31 and a nut 40. The sleeve
member has an interior surface 32, an exterior surface 38, a top edge 33 and a

CA 02833410 2013-11-15
bottom edge 36. The sleeve member has a bottom collar 35 and an upstanding
portion 39 extending from the top of the collar 35. The bottom collar 35 has
an
exterior surface 40 with a diameter greater than that of the upstanding
portion 39.
The interior surface 32 of the upstanding portion 39 is of a diameter
substantially
5 equal to that of the cylindrical interior surface 15 of the suspension
strut sleeve 14 to
receive the shock absorber therein.
The interior surface 41 of the bottom collar 35 is of increased diameter
relative to the interior surface 32 of the upstanding portion 39 so as to
engage over
the collar portion 17 of the suspension strut and so as to sit on the washer
22.
The upstanding portion 39 has a male screw thread 37 on the exterior
surface 39 thereof and the exterior surface of the upstanding portion 39 has a

diameter arranged to receive the spring 23 thereon.
The nut 40 has a female screw thread 41 for engaging onto the male
screw thread 37 and is movable to different set portions of a top surface 42
of the
nut along the male screw thread;
The nut having the top face 42 arranged for engaging and supporting a
bottom turn 24 of the spring 23 so that the bottom turn of the spring can be
lifted
from the washer 22 onto the top surface 42 of the nut so as to lift the spring
to
provide a lift of the suspension.
The diameter of the exterior surface of the nut and of the bottom collar
is substantially equal and each includes notches 43, 44 for engaging a wrench
for
rotation of the nut relative to the bottom collar to adjust the height of the
lift.

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The use of the machined lift apparatus allows it to fit effectively in place
o the collar 17 and to hold the lift at a required lift level for the intended
suspension
lift.
Since various modifications can be made in my invention as herein
above described, and many apparently widely different embodiments of same made
within the spirit and scope of the claims without department from such spirit
and
scope, it is intended that all matter contained in the accompanying
specification shall
be interpreted as illustrative only and not in a limiting sense.

Representative Drawing