U.S. patent number 3,880,441 [Application Number 05/413,775] was granted by the patent office on 1975-04-29 for tandem roller hockey skate.
This patent grant is currently assigned to Super Skate Incorporated. Invention is credited to Morris L. Silver.
United States Patent |
3,880,441 |
Silver |
April 29, 1975 |
Tandem roller hockey skate
Abstract
A roller hockey skate includes a hockey boot, a pair of roller
support blades rigidly attached to the bottom of the boot, and a
set of four ground-engaging rollers mounted in tandem between the
blades. Each roller preferably is made of a stiff material, such as
hard rubber or plastic, and is about 23/4 inches in diameter with
good lateral stiffness, which enables the user of the skate to
achieve such maneuverability and high speeds that the skate
performs in a manner comparable to ice skates. The front and rear
rollers protrude beyond the front and rear, respectively, of the
boot, which provides good balance when the user travels at high
speeds over rough surfaces. The rollers are releasably attached to
the roller support blades, and the front and rear rollers are
adjustable vertically so that the degree of ground-engagement by
the rollers can be varied in accordance with the user's skating
style and experience.
Inventors: |
Silver; Morris L. (Los Angeles,
CA) |
Assignee: |
Super Skate Incorporated
(Marina Del Rey, CA)
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Family
ID: |
26956655 |
Appl.
No.: |
05/413,775 |
Filed: |
November 8, 1973 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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274191 |
Jul 24, 1972 |
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Current U.S.
Class: |
280/11.223;
280/11.231; 301/5.7 |
Current CPC
Class: |
A63C
17/22 (20130101); A63C 17/06 (20130101) |
Current International
Class: |
A63C
17/00 (20060101); A63C 17/06 (20060101); A63C
17/22 (20060101); A63C 17/04 (20060101); A63c
017/06 () |
Field of
Search: |
;280/11.22,11.23,11.2,7.13,11.19,11.1BT,11.1BR ;301/5.3,5.7 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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838,301 |
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Dec 1938 |
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FR |
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247,346 |
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Oct 1963 |
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AU |
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572,815 |
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Oct 1945 |
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GB |
|
816,753 |
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May 1937 |
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FR |
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812,169 |
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Aug 1951 |
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DT |
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Primary Examiner: Schonberg; David
Assistant Examiner: Smith; Milton L.
Attorney, Agent or Firm: Christie, Parker & Hale
Parent Case Text
CROSS-REFERENCE TO RELATED APPLICATION
This is a continuation-in-part of my application Ser. No. 274,191,
filed July 24, 1972, now abandoned.
Claims
I claim:
1. A tandem roller hockey skate comprising a boot for receiving a
foot of a user and adapted to provide support for the ankle of the
user's foot, the boot also having a foot-supporting base, rigid
roller supporting means extending down from the underside of the
foot-support base, means for rigidly attaching the roller support
means to the foot-support base, a set of four longitudinally spaced
apart rollers mounted in tandem on the roller support means, the
roller including a front roller, two intermediate rollers, and a
rear roller, each roller being at least about 23/4 inches in
diameter and having a ground-engaging portion made of a relatively
stiff material adapted to provide substantial lateral rigidity
during use, the rollers being mounted to the roller support means
so they are engageable with the ground in unison, the front roller
being mounted to the roller support means so its axis of rotation
is forward of the tip of the foot-support base, and in which the
rear roller is mounted to the roller support means so its axis of
rotation is behind the tail end of the foot-support base.
2. A tandem roller hockey skate according to claim 1 in which the
means for mounting the forward and rear rollers to the roller
support are adjustable vertically closer to the boot than the
intermediate rollers so that the bottoms of the rollers can be
aligned along a substantially arcuate path.
3. A tandem roller hockey skate according to claim 1 in which the
ground-engaging portions of the rollers are made of hard rubber or
hard plastic.
4. A tandem roller hockey skate according to claim 1 in which a
portion of each roller has a major portion thereof comprised of a
relatively stiff material, and including a separate rigid metal
plate on each side of the stiff material which comprises the
central portion of the roller and in direct contact therewith to
provide good lateral support for the roller during use.
5. A tandem roller hockey skate according to claim 4 in which each
plate extends at least about one-half the diameter of the
roller.
6. A tandem roller hockey skate according to claim 1 in which each
roller is releasably attached to the roller support means.
7. A tandem roller hockey skate according to claim 1 in which the
means for mounting the forward and rear rollers to the roller
support are adjustable vertically closer to the boot than the
intermediate rollers so that the bottoms of the rollers can be
aligned along a substantially arcuate path, and in which a separate
rigid metal plate is mounted on each side of each roller to provide
lateral support for the rollers during use.
8. A tandem roller hockey skate according to claim 7 in which each
rigid plate extends at least about one-half the diameter of the
roller.
9. A tandem roller hockey skate according to claim 8 in which each
roller is releasably attached to the roller support means.
Description
BACKGROUND OF THE INVENTION
This invention relates to tandem roller skates, i.e., skates in
which a single row of rollers are attached to the botton of the
skake. More particularly, the invention relates to a tandem roller
hockey skate which achieves the speed, maneuverability, and balance
normally associated with ice skates.
In the past, a variety of roller skates have veen devised in which
a series of rollers are arranged in tandem on the skate. The
purpose of such skates generally has been to simulate the
performance of ice skates, especially so that the skate will be
suitable for use in figure-skating. However, the prior art tandem
roller skates have not been designed in such a way that they can
simulate the speed, maneuverability, balance, and fast-start
capability of ice skates.
SUMMARY OF THE INVENTION
Briefly, this invention provides a tandem roller hockey skate which
includes a boot having an elongated foot-supporting base, rigid
roller support means extending down from the underside of the
foot-supporting base, and a set of four longitudinally spaced apart
rollers mounted in tandem on the roller support means. The rollers
are arranged to provide a front roller, a pair of intermediate
rollers, and a rear roller, all of which are engageable with the
ground in unison. Each roller is at least about 23/4inches in
diameter. The rollers also have ground-engaging portions made of a
stiff material, such as hard rubber or plastic, and are adapted to
provide good lateral stiffness as well as stiffness in
compression.
I have discovered that the use of four hard rollers mounted in
tandem and of a size at least about 23/4 inches in diameter (which
is larger than the rollers used in most conventional roller skates
having three or more rollers in tandem) makes it possible for the
user of the skate to obtain the speed, maneuverability, balance,
and fast-start capability normally obtained with ice skates. The
small size of prior art rollers, or the use of a resilient material
in such rollers, limits the speed, fast-start capability, and
maneuverability of the prior art skates to such an extent that the
user is unable to simulate the performance of ice skates.
The rollers are arranged so that the front roller protrudes forward
of the tip of the foot-supporting base, and the rear roller
protrudes rearward of the tail end of the foot-supporting base.
This arrangement of rollers aids the user in fast-starting and
achieving good balance, especially when travelling at high speeds
over rough surfaces.
Since the roller skate is capable of simulating the performance of
ice skates, it is especially suitable for use indoors on gymnasium
floors, or outdoors on hard surfaces such as streets, playgrounds,
and parking lots, by hockey players or those who are learning the
game and who do not have a nearby ice skaking rink at their
disposal.
These and other aspects of the invention will be more fully
understood by referring to the following detailed description and
the accompanying drawing.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is an elevation view showing a tandem roller hockey skate
embodying the present invention;
FIG. 2 is a sectional elevation view taken on line 2--2 of FIG. 1;
and
FIG. 3 is a plan elevation view taken on line 3--3 of FIG. 1.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to the drawing, a tandem roller hockey skate 10 includes
an ankle-supporting boot 12 and a pair of longitudinally aligned
rollers 14 mounted in tandem below the underside of the boot.
Preferably, boot 12 is a hockey boot, because the skate is
especially useful in practicing and playing hockey on hard
surfaces.
Preferably, there are four rollers attached to the underside of the
boot in a ground-engageable position. The rollers are attached to
the boot by a pair of longitudinally extending and parallel roller
support members, each of which includes a downwardly projecting
elongated blade 16, and a pair of longitudinally spaced apart,
horizontally disposed front and rear supports 18, 19 extending at
right angles with respect to the blades. The blades are rigidly
secured to the foot-supporting base 20 of the boot by bolts 22, and
nuts 24 are threaded onto the shank of each bolt and tightened
against the underside of base 20.
As shown best in FIG. 2, each roller 14 includes a sealed roller
bearing 26 having a transverse opening 28 extending through it. A
pair of opposed nylon sleeves 30 are inserted in the ends of each
opening 28. The sleeves provide a fixed shaft about which the
rollers rotate, and also act as spacers between the outer edges of
the rollers and the inner edges of the blades. The side of each
roller is recessed in its center, and a pair of opposed rigid metal
support plates 29 are sealed in the opposite recessed portions of
each roller. The metal plates of each roller are held in place by
suitable fasteners (not shown) such as screws which extend
transversely through the roller from one side thereof and are
tightened by nuts on the opposite side of the roller. Metal support
plates 29 provide good lateral stiffness for the rollers which is
especially necessary when the skater is travelling at high speeds
which his skates held on a cant angle relative to the vertical
plane.
Sleeves 30 of each roller are aligned with collinear holes 32 in
the blades, and an elongated externally threaded bolt 34 extends
through sleeves 30 and holes 32. A separate nut 36 is threaded onto
the shank of each bolt and is tightened against the outer wall of
the blade.
As shown best in FIG. 1, the roller support blades 16 comprise a
pair of opposed, vertically extending, elongated slotted openings
38 for mounting the axle shaft of the front roller, and a second
pair of opposed vertically extending elongated slotted openings 40
for mounting the axle shaft of the rear roller. These slotted
openings provide means for adjusting the type of contact between
the ground and the rollers. For example, all four rollers may be
mounted to the support blades so that they contact the ground in
unison. This provides good ice skate-simulating performance,
because of the large amount of rolling contact between the four
large rollers and the ground. Alternatively, the four and rear
rollers can be moved to a position slightly higher than the
intermediate rollers, so the user of the skate can obtain a "rocker
effect" from the rollers, which is desirable to some skaters. A
horizontally extending, elongated slotted opening 42 allows
longitudinal adjustment in the position of an intermediate roller
so the spacing on both sides of it can be varied. Thus, the skater
is allowed to adjust the type of ground contact of his skate to
suit his particular skating style and experience.
Moreover, since the rollers are releasably attached to the roller
mounting blades, each of the rollers can be removed and reversed to
obtain an even amount of wear on each side of each roller.
Preferably, rollers 14 are at least about 23/4 inches in diameter
and are made of a stiff, substantially non-resilient material, such
as hard rubber or plastic. The traction surfaces of the rollers are
rounded (when the roller is viewed on end as in FIG. 2) which
improves the maneuverability of the skate when compared with a
skate having rollers with flat traction surfaces.
In use, roller skate 10 performs in a manner akin to ice skates
because of a combination of factors. The rollers are larger than
those of known conventional roller skates having four rollers in
tandem. For example, rollers 16 provide a relatively long stroke
length (since they protrude beyond and behind the tip and tail end,
respectively, of the skate), and because of the large size of the
rollers (the combined spacing between the rollers is not greater
than the diameter of any one roller) combined with the long stroke
length, the skate provides a large amount of rolling contact with
the ground which enables the skater to simulate the performance of
ice skates. Tests conducted with my skate have shown that it is
possible to travel at substantially higher speeds, and with better
fast-start capability and high-speed maneuverability than on tandem
skates having smaller rollers or rollers made of a resilient
material such as soft rubber. If the rollers are made of soft
rubber, or if the rollers have lateral flexibility, for example,
the fast-starting capability and maximum speed of the skate is too
limited to simulate the behavior of ice skates. Moreover, the
rollers are carried on roller support blades which are rigidly
attached to the ankle-supporting boot worm by the user. This
provides better performance than skates which are releasably
attached to the user's shoe, because the rigid connection between
the support blades and the boot avoids lost motion which tends to
be present with skates which are releasably clamped to the user's
shoe.
The front and rear rollers protrude in front of and to the rear of
the tip and tail ends, respectively, of the boot base member 20.
The two intermediate rollers support and properly balance the
weight of the user. The rotational axes of the front and rear
rollers preferably are in front of and to the rear of the top and
tail ends, respectively, of base member 20. This long stroke
provided by the roller arrangement gives the skate good stability
and adds to its fast-start action during use. The stability of the
skate is improved by the rollers protruding beyond the front of and
rear of the skate, because in instances where the front roller, or
maybe another roller, comes into contact with an impediment, such
as a crack in a playground surface, the long track provided by the
remaining three rollers helps the skater to maintain good balance
until he recovers from contact with the impediment.
Thus, my skate is especially suitable for use by hockey players
either in practice or in games played on hard surfaces other than
ice. This is especially useful because the skate can be used on
gymnasium floors, other suitable hard surfaces, such as streets and
playgrounds, which are generally more available to such athletes
than ice skating rinks.
* * * * *