U.S. patent application number 09/944585 was filed with the patent office on 2002-03-07 for method and apparatus for converting standard lumber into a grinding rail.
Invention is credited to Labelson, Ross.
Application Number | 20020027224 09/944585 |
Document ID | / |
Family ID | 26923388 |
Filed Date | 2002-03-07 |
United States Patent
Application |
20020027224 |
Kind Code |
A1 |
Labelson, Ross |
March 7, 2002 |
Method and apparatus for converting standard lumber into a grinding
rail
Abstract
A portable grinding rail assembly for use with skateboards,
in-line skates, and the like. The assembly includes a beam that is
preferably a piece of stock wood, such as a two-by-four, having
support legs attached to each end of the beam. The assembly also
includes a cover or cap that sits on top of the beam and provides
the riding surface for the skates. The cover and the support legs
are removable from the beam so that the assembly is easily
transported and to allow sale and shipment of the support legs and
cover separately from the beam. The cover can also be L-shaped for
use with existing, stationary supports, such as roadway curbs.
Inventors: |
Labelson, Ross; (Westbury,
NY) |
Correspondence
Address: |
PILLSBURY WINTHROP LLP
1600 TYSONS BOULEVARD
MCLEAN
VA
22102
US
|
Family ID: |
26923388 |
Appl. No.: |
09/944585 |
Filed: |
September 4, 2001 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
60229545 |
Sep 5, 2000 |
|
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Current U.S.
Class: |
256/65.06 |
Current CPC
Class: |
A63C 17/16 20130101;
A63C 19/10 20130101; A63C 2201/02 20130101 |
Class at
Publication: |
256/65 |
International
Class: |
E04H 017/14 |
Claims
What is claimed is:
1. A rail assembly for supporting a rider, comprising: a
non-metallic, elongated beam having a first end, a second end, a
top surface, and a bottom; a first support having an upper
receiving area coupled to said first end of said beam adjacent said
bottom of said beam, said first support having a lower portion for
contacting a supporting surface and for spacing said beam from the
supporting surface; and a cover positioned over said top surface of
said board and spaced from said first support, said cover having a
relatively smooth, upper exterior surface.
2. A beam assembly according to claim 1, wherein said first support
and said cover are metal.
3. A grinding rail assembly, comprising: an elongated non-metallic
beam having a first end, a second end, a top surface, and a bottom;
a first metal support having an upper receiving area coupled to
said first end of said beam adjacent said bottom of said beam, said
first support having a lower portion for contacting a supporting
surface and for spacing said beam from the supporting surface; a
second metal support having an upper receiving area coupled to said
second end of said beam adjacent said bottom of said beam, said
second support having a lower portion for contacting the supporting
surface and for spacing said beam from the supporting surface; and
a metal cover positioned over substantially the entire length of
said top surface of said beam and spaced from said first and second
supports, said cover having a relatively smooth, upper exterior
surface.
4. A method of using a rail, comprising the steps of: providing an
elongated member having an L-shaped transverse cross-section;
positioning the member on a rigid support in a nesting relationship
with the support, the support having a surface corresponding to the
L-shaped cross-section of the member; moving a vehicle along the
member; removing the member from the rigid support; and
repositioning the member on the rigid support.
Description
[0001] This application claims the benefit of U.S. Provisional
Patent Application Ser. No. 60/229,545, filed on Sep. 5, 2000, the
entire contents of which are hereby incorporated herein by
reference.
FIELD OF THE INVENTION
[0002] The invention relates generally to a grinding rail device
that an individual rides along. More specifically, the invention
relates to a portable grinding rail assembly for use with
skateboards, in-line skates, and the like.
BACKGROUND OF THE INVENTION
[0003] Typical, portable grind rails for skateboard, in-line skates
and the like are large, heavy assemblies made from metal and welded
together. As a result, the previous portable rails are in fact
difficult to move and to ship to a purchaser and are cumbersome to
keep in shops in which they could be sold. Also, the previous rails
often required welding and easily rust. Thus, prior art rails can
not easily be repaired as necessary. Further, due to the extensive
amount of material required for the fabrication of a sturdy metal
rail, prior rails are generally expensive.
[0004] An example of a prior art rail is illustrated in U.S. Pat.
No. 5,718,412 to Levanas, the entire disclosures of which is
incorporated herein by reference.
SUMMARY OF THE INVENTION
[0005] An object of the invention is to provide an improved rail
for riding.
[0006] Another object of the invention is to provide an improved
rail for skateboards, in-line skates, and the like.
[0007] Yet another object of the invention is to provide a rail
assembly that is lightweight and easy to ship, assemble, and
transport.
[0008] Another object of the invention is to provide an improved
rail for riding formed with a beam of commercially available lumber
that is easily obtained in local home supply stores to avoid the
need of shipping the beam.
[0009] Still another object of the invention is to provide a
grinding rail that can be assembled without cutting or welding and
requiring only the screwing of fasteners.
[0010] The above objects can be attained by providing a rail
assembly for supporting a rider, comprising a non-metallic,
elongated beam having a first end, a second end, a top surface, and
a bottom; a first support having an upper receiving area coupled to
the first end of the beam adjacent the bottom of the beam, the
first support having a lower portion for contacting a surface and
for spacing the beam from the surface; and a cover positioned over
the top surface of the board and spaced from the first support, the
cover having a relatively smooth, upper exterior surface.
[0011] The above objects can be further attained by providing a
grinding rail assembly, comprising an elongated wooden beam having
a first end, a second end, a top surface, and a bottom; a first
metal support having an upper receiving area coupled to the first
end of the beam adjacent the bottom of the beam, the first support
having a lower portion for contacting a surface and for spacing the
beam from the surface; a second metal support having an upper
receiving area coupled to the second end of the beam adjacent the
bottom of the beam, the second support having a lower portion for
contacting the surface and for spacing the beam from the surface;
and a metal cover positioned over substantially the entire length
of the top surface of the beam and spaced from the first support,
the cover having a relatively smooth, upper exterior surface.
[0012] The above objects can be further attained by providing a
method of using a rail, comprising the steps of: providing an
elongated member having a generally L-shaped transverse
cross-section; positioning the member on a rigid support in a
nesting relationship with the support, the support having a surface
corresponding to the L-shaped cross-section of the member; moving a
vehicle along the member; removing the member from the rigid
support; and repositioning the member on the rigid support.
[0013] Other objects, advantages and features of the invention will
become apparent to those skilled in the art from the following
detailed description which, taken in conjunction with the annexed
drawings, discloses preferred embodiments of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] FIG. 1 is a front view of a rail in accordance with a first
embodiment of the present invention;
[0015] FIG. 2 is a side view of the rail illustrated in FIG. 1;
[0016] FIG. 3 is an exploded, front view of the rail in accordance
with the first embodiment of the present invention;
[0017] FIG. 4 is an exploded, side view of the rail in accordance
with the first embodiment of the present invention;
[0018] FIG. 5 is a cross-sectional view of the beam transverse to
the longitudinal axis of the beam in accordance with the present
invention having a first alternative embodiment of the cover, which
forms a rounded riding surface;
[0019] FIG. 6 is a cross-sectional view of the beam transverse to
the longitudinal axis of the beam in accordance with the present
invention having a second alternative embodiment of the cover,
which forms a rounded riding surface;
[0020] FIG. 7 is a perspective view of a rail in accordance with a
second embodiment of the present invention positioned on a roadway
curb;
[0021] FIG. 8 is a side view of the rail in accordance with the
second embodiment of the present invention and illustrating a
skateboard sliding along the rail:
[0022] FIGS. 9-15 are schematic drawings illustrating various
cross-sectional shapes of covers or caps in accordance with the
present invention, the cross-sections are taken transverse to the
longitudinal axis of the cover;
[0023] FIGS. 16-18 illustrate additional, various cross-sectional
shapes of covers or caps in accordance with the present invention,
the cross-sections are taken transverse to the longitudinal axis of
the cover and a portion of the beam 12 is also illustrated in
cross-section;
[0024] FIG. 19 illustrates an additional embodiment of a beam in
accordance with the present invention;
[0025] FIGS. 20-25 illustrate various embodiments of a support for
the beam in accordance with the present invention, the
cross-sections are taken transverse to the longitudinal axis of the
rail assembly and are supported above the surface, which is also
illustrated; and
[0026] FIG. 26 illustrates a rail assembly in accordance with an
additional embodiment of the present invention.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
[0027] As seen in FIGS. 1-4, the preferred embodiment of the
invention is illustrated as a rail assembly or rail 10 for
supporting vehicles along its length. Although an array of vehicles
can be used with rail 10, it is preferably suited for use with
skate-type vehicles such as, skateboards, in-line skates,
snowboards, soap shoes, scooters, bicycles, and other similar
vehicles capable of traveling along a smooth surface. The user
typically jumps up onto the rail 10 and with the skating device on
the rail 10, the user travels along the rail until the user jumps
back off the rail. This is referred to as "grinding." The rail can
remain portable, that is, not fixed to any one location, and since
the rail 10 preferably includes only materials that cannot rust,
the invention can be left outdoors without special care for rain or
rust.
[0028] Rail 10 includes an elongated beam 12 having a cover 14 to
provide the riding surface. The beam is supported at both ends
above supporting surface 16 by supports 18.
[0029] Beam 12 can be formed of any appropriate material but is
preferably made from lightweight material such as wood or plastic.
If a plastic beam 12 is used, a lightweight plastic material and/or
a plastic honeycomb configuration can be used to decrease weight. A
suitable beam 12 can be a piece of stock wood in a common size such
as 2.times.2, 2.times.4, 2.times.6, 2.times.8, 2.times.10,
2.times.12 or even 4.times.4 through 4.times.16, although any
appropriate shape or size of beam can be used. For example, the
beam 12 can be round in cross-section. The beam has a first end 40,
a second end 42, a top 44, and a bottom 46. If the beam 12 is wood,
it can be pressure treated to preserve the durability of the beam
12.
[0030] The beam 12 can be elevated above surface 16 by a pair of
supports 18. For ease of manufacturing, the supports, as
illustrated in the drawings, can be substantially identical.
Although numerous suitable configurations are possible, it is
advantageous to form supports from readily obtainable material as
in channel with square or rounded cross-sections that are widely
available. Support 18 can have a tubular elbow 50 with grips 52 at
each end of the elbow 50 for traction with the supporting surface
16. The grips 52 are preferably a rubber or plastic material and
aid in frictionally engaging the surface 16 to stabilize the rail
10. At the apex of the elbow 50, two substantially identical plates
or flanges 54 extend from the elbow 50 to form a receiving area 56,
which is shaped to mate with the beam 12. The beam 12 fits snugly
within the receiving area 56 and can then be further secured within
the area 56 by any appropriate fastening mechanism such as
fasteners 20, for example, as with screws or bolts that extend into
the beam 12. The beam 12 can be predrilled by the manufacturer or
the fastener holes can be drilled during installation.
[0031] Although supports 18 are illustrated as being substantially
identical, they can be otherwise formed to create varying
characteristics of the rail 10. For example, one support 18 could
raise the beam 12 higher from the surface 16 to create an inclined
rail 10. Also, the beam 12 and cover 14 assembly could be used
without any supports 18 and instead be positioned on fixed supports
or other temporary supports supplying the desired orientation of
the beam 12.
[0032] Cover or channel or cap 14 provides a hard, smooth surface
for contacting with the skate-like vehicles while they travel along
the rail 10 and cover 14 fits snugly on top of the beam 12. In the
preferred embodiment the cover 14 is sized to fit snugly on the
narrow dimension of stock sizes of lumber, such as 2.times.4,
2.times.8, 2.times.10, 2.times.12 boards, and can be provided in
any desired length, including standard stock lumber lengths of 6,
8, and 10 feet. The cover can be also be provided in two shorter
pieces that can be butted together to cover a longer beam. For
instance, the cover 14 could be provided in two 5 foot lengths
which could then be used with a 10 foot board to provide a 10 foot
rail. The two cover pieces need only be attached to the longer
board so that the adjacent ends butt together.
[0033] Cover 14 can take many forms but preferably matches the
shape of beam 12. In the figures, since beam 12 is rectangular in
cross-section, the cover is generally U-shaped in cross-section.
Alternatively, the cover 14 can have a cross-section different than
that of the beam 12 depending on the desired rail 10
characteristics. For instance, the user may prefer to ride on a
rounded cover 10 as illustrated in FIGS. 5 and 6 instead of a sharp
edge formed by the cover 14 illustrated in FIGS. 1-4.
[0034] Cover 14 includes a top, exterior surface or riding surface
60 that is supported on top of the beam 12 by two sides 62. Cover
14 is preferably formed of a smooth, hard, rust-resistant material
such as stainless steel, aluminum, or durable plastic material. If
desired, cover 14 can be attached to beam 12 using fasteners. Some
fasteners that can supply the necessary connection include
adhesives on the surfaces connecting cover 14 to beam 12 and
counter-sunk screws positioned in the sides 62 of the cover 14.
Other coupling options include tape, spikes under the cover 14,
metal tabs that dig into the wood, a pressure fit, a soft wedge of
rubber or cork.
[0035] In FIGS. 5 and 6, a cover with rounded skating surfaces is
illustrated. This provides a different, more rounded surface on
which the skater will ride along the beam 12. In FIG. 5, cover 74
is generally U-shaped and attached to beam 12 only at the sides of
beam 12 while cover 84 in FIG. 6 has a cross-section shaped to
receive the beam 12 and abuts beam 12 on three surfaces of the beam
12. Preferably, covers 74 and 84 are substantially identical to
cover 14 except for their cross-section shape.
[0036] The rail 10 is portable due to its light size and its
construction. Since a lightweight beam 12 is used, the rail is easy
to manipulate and move. One advantage of the modular design of the
rail 10 is that it is easy to ship and repair. For example, a user
can purchase only a cover 14 and a pair of supports 18 and then
assemble the rail 10 using a piece of stock lumber obtained
separately in the user's locale and at a low price. Thus, shipping
costs are minimized since only the lightweight cover 14 and
supports 18 are shipped to the user. Further, since the cover can
be provided in two pieces of shorter length for use with a longer
board, as described above, the length of the shipping package can
be reduced for easier handling. Thus, two foot cover pieces can be
shipped in a generally 5 foot long package but an be used with a 10
foot board to make a 10 foot rail. All of this reduces the end
price of the rail to the user.
[0037] Further, since the cover 14 is sized to fit on standard
sized lumber available from the local lumber yard, the rail can be
assembled without need for saws to cut the wood. Rather, only a
wrench or screwdriver need be used to attach the legs to the beam.
This has several advantages. First, the user need not have
expensive saws or other equipment available to assemble the rail.
Only commonly available hand tools need be used. Second, since a
saw is not necessary the danger to the user is reduced, which is
especially important when the user may be a teenager, as here.
Also, if a piece of the rail 10 breaks, the broken piece can simply
be removed without damaging the other elements of the rail and a
new piece can be inserted. In addition, since the rectangular or
rounded configuration cover 14 can be easily interchanged, the
configuration of the rail 10 can be quickly changed. Thus, the user
can have two rail configurations for only the cost of the second
cover 14.
[0038] A second embodiment of the invention is illustrated in FIGS.
5-6. More specifically, a rail 100 is illustrated that is
substantially L-shaped and capable of being positioned on a mating,
rigid surface such as a roadway curb 106 or stair step so that a
riding surface can be established on the previous surface that was
not as suitable for riding as the rail 100 as well as to protect
the surface from damage due to the skateboard, etc. Rail 100
preferably has only two sides 102 and 104 so that it is easily
positioned on to and easily removed from the rigid surface 16.
Although the rail is shown as generally L-shaped, it can also have
a more rounded angle to better conform to more rounded curbs. In an
alternative embodiment, a layer of relatively soft material 120
such as rubber, foam or cork can be attached on the curb facing
side of the rail 100 to provide a more conforming fit between the
rail 100 and the curb, as well as to help keep the rail in place on
the curb. Additionally, a non-permanent, removable, tacky adhesive
may also be used between the rail and the curb to temporarily
attach the rail to the curb. Alternative temporary fasteners can
also be used, such as straps and clips to help temporarily maintain
the rail in place on the curb. As seen in FIG. 6, a skateboard is
riding along the exterior surface 110 of the rail 100. Although
this embodiment is illustrated on a curb 106, rail 100 could be
used on any appropriate surface, including a bench and a sawhorse.
The rail 100 can be made of any smooth, hard, rust-resistant
material, such as metal or hard plastic.
[0039] FIGS. 9-18 illustrate various embodiments of the cover 14 in
addition to those illustrated in FIGS. 1-4 and in FIGS. 5 and 6.
The embodiments illustrated in FIGS. 9-18 represent cross-sectional
views of various covers and are shown to illustrate some of the
many forms the cover can take to provide rails having different
characteristics for the rider.
[0040] FIG. 9 shows the cover 14, which is discussed above and is
perfect for skateboarding. FIG. 10 shows the cover 74, which is
discussed above and is preferred for bicycles and in-line skates.
FIG. 11 shows a cover 206 that is similar to cover 14, but is
slanted to form an incline. FIG. 12 shows a cover 208 that is
substantially identical to cover 206, but includes an additional
stabilizing flange 210 for attaching to the top of the beam 12.
FIGS. 13 and 14 show covers 212 and 216, respectively having
grooves 214 and 218, respectively. The grooves 214 and 218 reduce
friction and provide for easier grinds with skateboard trucks. The
bolt in the trucks fits in the grooves 214 and 218 and does not
scrape on the grinding surface. FIG. 15 shows a cover 220 having a
wide grinding surface for correspondence with a beam having a wider
width than beam 12 for users needing more stability than that
provided by a more narrow beam 12. FIG. 16 shows the cover 74
including a spacer 232 to reinforce cover 74 to avoid crushing of
cover 74 from the weight of the user while grinding. FIG. 17
illustrates cover 206 having a reinforcing spacer 236. FIG. 18
shows a cover formed of two substantially identical pieces 238
positioned on opposite edges of the beam 12. The pieces 238 are
preferably right angles that can also be secured to grinding
members other than a beam 12, such as, a bench or a curb.
[0041] All covers can be fastened to their corresponding beam in
any appropriate manner. For example, the covers can be attached to
the beam by double-sided tape, glue, epoxy, rubber, cork, spikes,
screws and bolts. Also, the covers can be adapted to facilitate the
attachment to the beam by the appropriate fastener. For instance to
facilitate the attachment of the covers to the beam 12 by screws or
bolts, the covers can include holes though which the screws or
bolts can extend.
[0042] FIG. 19 shows an alternative embodiment of the cover.
Although FIGS. 1 and 3 illustrate a substantially straight upper
surface 80 of the cover 14, covers and beams can have different
longitudinal shapes to provide grinding surfaces having different
characteristics. For example, cover 250 has an upper surface 251
that is concave to provide a grinding surface that enables the user
to launch off one of the inclined ends 253 and 254 of the cover
250.
[0043] FIGS. 20-25 show various embodiments of supports for the
beams and covers in accordance with the subject invention. FIG. 20
shows a support having two substantially identical right angles 260
fastened to beam 12 by fasteners 264 such as screws. Also, a layer
of frictional material 262, such as rubber, is preferably provided
on the side 263 of each right angle 260 engaging supporting surface
16. FIG. 21 shows a support having two substantially identical
angular members 270 fastened to beam 12 by fasteners 264 such as
screws. Also, a boot of frictional material 272, such as rubber, is
provided on the end of each member 270 engaging supporting surface
16. FIGS. 22 and 23 show cast or welded supports 280 and 290,
respectively, that are cast, molded, or welded to correspond to the
bottom shape of beam 12. Support 280 can also have reinforcing
members 283 spaced along the length of the beam 12 to reinforce the
support 280 and, thus, the stability of the rail. It should be
understood that any of the supports can have reinforcing members to
further stabilize and strengthen not only the supports but also the
entire rail. These reinforcing members are optional depending on
the desired characteristics of the subject rail. In FIG. 22,
reinforcing members 283 are generally triangular members that are
welded to the main portion 285 of support 280. FIG. 23 is a
two-piece version of that shown in FIG. 22. FIGS. 24 and 25
correspond to FIGS. 22 and 23, respectively, except the supports
281 and 290 are bent from a single piece of material such as metal
instead of being cast, molded, or welded.
[0044] The supports of the invention raising the beam 12 above
supporting surface 16 are preferably portable so that the rail 10
can be picked up and moved to various locations. Alternatively, the
supports described above can be rigidly and permanently mounted to
a fixed structure or supporting surface 16 so that the rails are
permanent structures. Such permanent structures may be
advantageously mounted in skate parks, the user's home, or other
places where skating will regularly occur.
[0045] FIG. 26 illustrates yet another embodiment of a rail in
accordance with the invention. Rail assembly 310 illustrated in
FIG. 26 has a beam 312 supported by support 318 and has a cover 314
with a reinforcing spacer 315. Beam 312 can be a wide beam with
shallow thickness, such as a 2.times.12 board, while support 318
can be a 2.times.6 board that is fastened to the beam 312 by an
appropriate fastener 320, such as a screw. To provide a grinding
surface that is generally level, beam 312 has a cover 314 similar
to cover 206 and a reinforcing spacer 236 similar to spacer 236.
This embodiment requires even fewer specialty items in that only
the cover 314 and the spacer 315 are specifically made for the
grinding rail 310. The user purchases the beam 312 and the support
318 locally from a home supply or lumber store as stock items,
along with the fasteners 320. Thus, the cost of manufacturing and
shipping the rail 310 is even further reduced.
[0046] While advantageous embodiments have been chosen to
illustrate the invention, it will be understood by those skilled in
the art that various changes and modifications can be made therein
without departing from the scope of the invention as defined in the
appended claims.
* * * * *