U.S. patent application number 15/142855 was filed with the patent office on 2017-01-26 for luminescent raised road marker.
The applicant listed for this patent is Andrew Lee, Gang Li, ZhiQiang Liu, Michael L. Milano. Invention is credited to Andrew Lee, Gang Li, ZhiQiang Liu, Michael L. Milano.
Application Number | 20170022676 15/142855 |
Document ID | / |
Family ID | 57836886 |
Filed Date | 2017-01-26 |
United States Patent
Application |
20170022676 |
Kind Code |
A1 |
Milano; Michael L. ; et
al. |
January 26, 2017 |
LUMINESCENT RAISED ROAD MARKER
Abstract
A raised road marker is sized and configured to comply with
Department of Transportation requirements and other government
regulations and includes a top surface, opposite angled side faces
and opposite ends and a bottom surface structured to be bonded to a
road surface. The raised road marker is partially or entirely
formed of rare earth materials to provide a luminescent property
that emits a highly visible glowing light in dark or near dark
conditions and environments. In a preferred embodiment, the raised
road marker is molded of a plastic composition or other suitable
composition and includes one or more inserts or coatings of the
rare earth materials on the top side as well as possibly the
opposite ends. The opposite angled sides may be fitted with light
reflector strips.
Inventors: |
Milano; Michael L.; (Boynton
Beach, FL) ; Lee; Andrew; (Fort Lauderdale, FL)
; Liu; ZhiQiang; (Shanghai, CN) ; Li; Gang;
(Shanghai, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Milano; Michael L.
Lee; Andrew
Liu; ZhiQiang
Li; Gang |
Boynton Beach
Fort Lauderdale
Shanghai
Shanghai |
FL
FL |
US
US
CN
CN |
|
|
Family ID: |
57836886 |
Appl. No.: |
15/142855 |
Filed: |
April 29, 2016 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
62154185 |
Apr 29, 2015 |
|
|
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
E01F 9/559 20160201 |
International
Class: |
E01F 9/559 20060101
E01F009/559 |
Claims
1. A raised road marker comprising: a main body having a top
surface, a front face, a rear face and a bottom side; and at least
a portion of the main body being formed of a luminescent material
including at least one rare earth material.
2. A raised road marker comprising: a main body having a top
portion with a top surface, a front face, a rear face, and a bottom
side; and at least one insert fitted within said main body and at
least partially exposed on an exterior of said main body, and said
at least one insert being formed of a luminescent material
including at least one rare earth material.
3. The raised road marker as recited in claim 2 wherein the at
least one insert is fitted within the top portion of the main body
to define the top surface.
4. The raised road marker as recited in claim 2 wherein the at
least one insert is fitted within the front face of the main
body.
5. The raised road marker as recited in claim 2 wherein the at
least one insert is fitted within the rear face of the main body.
Description
[0001] This non-provisional patent application is based on
provisional patent application Ser. No. 62/154,185 filed on Apr.
29, 2015.
BACKGROUND OF THE INVENTION
[0002] Field of the Invention
[0003] The present invention relates to raised road markers and,
more particularly, to a raised road marker that is at least
partially formed of one or more rare earth materials to provide
luminescent qualities in dark or near dark environments.
[0004] Discussion of the Related Art
[0005] Raised road markers, also referred to as raised pavement
markers, are used as safety devices on roads to indicate lanes
separation of opposing traffic lanes, location of fire hydrants,
access for emergency vehicles, closed traffic areas or wrong
direction of vehicle travel (i.e., "Do Not Enter" or "Wrong Way").
Other names for raised road markers include road studs, road cubes,
road turtles or simply reflectors. Raised road markers are
typically molded of a durable plastic material and commonly have
two angled edges facing drivers approaching from opposite
directions. These angled edges or angled side faces are commonly
fitted with reflector strips to enhance visibility of the raised
pavement markers, particularly and night. The reflectors may be of
various colors to indicate such things as proper direction of
travel or closed traffic areas. For instance, when used for lane
markings, the opposite angled faces of raised road markers may be
fitted with a white or yellow reflector on one side to indicate
proper direction of travel and a red reflector on the opposite
angled face to indicate "Wrong Way" direction of travel.
[0006] At night, visibility of raised road markers largely depends
on use of headlights from approaching vehicles. In some instances,
particularly for lane dividers, raised road markers may not always
be clearly visible at night. Accordingly, there is a definite need
for a raised road marker that is formed at least partially of a
luminescent material that enhances the visibility of the raised
road marker in dark conditions.
SUMMARY OF THE INVENTION
[0007] The present invention is directed to a raised road marker
that is formed at least partially of a luminescent material that
emits a glowing light during dark and dim light conditions. In a
preferred embodiment, the luminescent material is comprised of one
or more rare earth materials that are adapted to be quickly charged
with light energy from the sun or headlights of approaching
vehicles and to emit a luminescent glowing light for an extended
period of time. In particular, the present invention proposes to
provide one or more inserts formed of rare earth materials within
raised road markers to enhance visibility at night. This may
include an insert that fits to the top of the raised road marker
and forms the top surface of the raised road marker, which may be
either flat or rounded, such as a dome shape. The one or more
inserts may also be provided on opposite front and rear faces of
the raised road markers. Alternatively, the rare earth materials
may be applied by coating surfaces of the molded raised road
marker. In another embodiment, the entire raised road marker may be
molded of one or more rare earth materials.
[0008] The rare earth elements and composite materials used in the
raised road marker of the present invention include, but are not
limited to, photoluminescent materials such as aluminate
photoluminescent pigment, silicate photoluminescent pigment and
nitrides photoluminescent pigment.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Referring to the several views of the drawings:
[0010] FIG. 1 is a side elevational view of a raised road marker,
shown in cross-sectional, illustrating one embodiment of the
present invention;
[0011] FIG. 2 is a top perspective view showing the raised road
marker of the present invention, in accordance with one embodiment
thereof; and
[0012] FIG. 3 is a cross sectional view of another embodiment of
the raised road marker of the present invention, wherein an insert
is formed for receipt within a dove tail shaped transverse slot so
that the insert, formed of one or more rare earth materials, is
held within the road stud and forms a rounded or dome shaped top
surface that is visible at night from all directions of
approach.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0013] The raised road marker of the present invention is shown
throughout the several views of the drawings and is generally
indicated as 10. In each of the embodiments, the raised road marker
10 includes a main body 12 having a top surface 14, a front face
16, and opposite rear face 18 and a bottom side 20 that is
structured and disposed to be secured to a ground surface, such as
a road surface, with appropriate adhesives that are commonly used
for securing raised road markers to ground surfaces, such as
asphalt, pavement, cement and the like.
[0014] In one embodiment, not shown in the drawings, the entire
main body 12 of the raised road marker 10 may be formed of a
luminescent material comprising one or more rare earth materials
that are adapted to be quickly charged with light energy from the
sun or headlights of approaching vehicles and to emit a luminescent
glowing light for an extended period of time.
[0015] In the several embodiments shown in FIGS. 1-3, the raised
road marker 10 of the present invention comprises a main body 12
formed of a molded plastic material or other suitable composition
that is durable and can withstand the harsh environment of an
outdoor road surface, is exposed to extreme weather conditions,
sunlight and heat, and heavy vehicle traffic. The embodiments of
the raised road marker shown in FIGS. 1-3 further include at least
one insert formed at least partially of a luminescent material. In
a preferred embodiment, the luminescent material is comprised of
one or more rare earth materials that are adapted to be quickly
charged with light energy from the sun or headlights of approaching
vehicles and to emit a luminescent glowing light for an extended
period of time.
[0016] In the embodiment shown in FIGS. 1 and 2, the main body 12
of the raised road marker 10 includes a first insert 30 fitted to a
top portion of the main body to provide the top surface of the
raised road marker 10. The main body 12 is further fitted with
inserts 32 on both the front face 16 and the rear face 18. The
inserts 30 and 32 are all formed of a luminescent material which,
in a preferred embodiment, comprises one or more rare earth
materials.
[0017] The embodiment of the raised road marker shown in FIG. 3
includes a single insert that includes at least one insert 30 that
is fitted within a dove tail shaped transverse slot formed in the
top portion of the main body 12 of the raised road marker 10. The
insert 30 is congruently configured to fit within the dove tail
shaped transverse slot so that the insert, formed of one or more
rare earth materials, is held within the raised road marker and
forms a rounded or dome shaped top surface of the raised road
marker that is visible at night from all directions of
approach.
[0018] While the present invention has been shown and described in
accordance with several preferred and practical embodiments, it is
recognized that departures from the instant disclosure are fully
contemplated within the spirit and scope of the present invention
which is not to be limited except as defined in the following
claims, as interpreted under the Doctrine of Equivalence.
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