U.S. patent number 3,618,556 [Application Number 05/028,384] was granted by the patent office on 1971-11-09 for traffic cones as safety devices in road traffic.
This patent grant is currently assigned to Titan Plastics Corporation. Invention is credited to Erich Dittrich.
United States Patent |
3,618,556 |
Dittrich |
November 9, 1971 |
TRAFFIC CONES AS SAFETY DEVICES IN ROAD TRAFFIC
Abstract
A traffic cone is made up of a base piece and an inflatable
flexible toppiece which is attached to the base and can be inflated
to the shape of a cone, the toppiece being made of luminescent or
reflective material for use as a safety device in road traffic.
Inventors: |
Dittrich; Erich (Bremen,
DT) |
Assignee: |
Titan Plastics Corporation (New
York, NY)
|
Family
ID: |
6601772 |
Appl.
No.: |
05/028,384 |
Filed: |
April 14, 1970 |
Foreign Application Priority Data
|
|
|
|
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Apr 24, 1969 [DT] |
|
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G 69 17 029.2 |
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Current U.S.
Class: |
116/63C;
D10/113.2; D10/109.1; 404/9; 40/612 |
Current CPC
Class: |
E01F
9/688 (20160201); E01F 9/654 (20160201) |
Current International
Class: |
E01F
9/012 (20060101); E01F 9/011 (20060101); E01f
009/10 () |
Field of
Search: |
;116/63,63P ;40/125N
;94/1.5 ;340/114,115 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Capozi; Louis J.
Claims
What is claimed is:
1. A traffic cone for warning and safety purposes in road and
highway traffic comprising a relatively heavy base piece adapted to
rest on a flat surface, said base piece having a central opening
therein defined by an inwardly facing peripheral groove, and a
separate attachable member comprising an inflatable cone portion of
relatively light weight made of a pliable material and a bottom
disc portion adhesively attached to said lightweight cone portion,
said disc portion having a diameter at least as great as the
diameter of said peripheral groove, said disc portion being adapted
to be detachably supported in said peripheral groove of the opening
in said base.
2. A traffic cone according to claim 1 wherein said cone portion
has an air valve therein for inflation thereof.
3. A traffic cone according to claim 1 wherein said cone portion is
made of luminescent material.
4. A traffic cone according to claim 1 wherein said cone portion is
made of fluorescent material.
5. A traffic cone according to claim 1 wherein said cone portion is
made of reflecting material.
6. A traffic cone according to claim 1 wherein said disc portion
has a diameter slightly greater than the diameter of said inwardly
facing peripheral groove of said base piece.
7. A traffic cone according to claim 1 wherein said bottom disc
portion is heavily reinforced in the shape of a downwardly facing
hemisphere.
Description
The present invention relates to a traffic cone to be used as a
warning and safety device in road and highway traffic.
Heretofore various devices have been proposed to warn oncoming road
traffic of obstructions or accidents ahead. These safety devices
are frequently painted with fluorescent red and white colors. The
most popular warning signs carried in private cars for emergency
use are triangular in shape, white with red edges. They must be
lightweight and easily folded so as to take up as little space as
possible in the storage area of a private car. The warning
triangles are light in weight and can easily be toppled by wind or
by turbulence caused by passing vehicles. However, in a traffic
cone, very little surface area is exposed-- much less than in a
triangle. The collapsible traffic cones, as they are known today,
utilize metal springs to form the rigid shape of the traffic cone.
The heavy weight of the springs, however, negatively affect the
stability of the cone.
An object of the present invention is to provide an improved
traffic cone of improved stability which will take up very little
storage space in the stored condition.
The invention will now be described in detail and with reference to
the following drawings, in which:
FIG. 1 is a cross-sectional view of one form of the device in its
inflated condition.
FIG. 2 is a top plan perspective view thereof;
FIG. 3 is a perspective view showing the device in the deflated
condition;
FIG. 4 is a partial cross-sectional view of a modified form of the
invention; and
FIG. 5 is a partial cross-sectional view of still another modified
form of the invention.
Referring to the drawings, a base 2 is provided which may be
circular, square or any other convenient outside configuration and
is provided with a large opening 4 of circular configuration
extending therethru. Preferably the base is made of rubber or
plastic and is preferably a fluorescent color, such as red.
The base 2 has a flat-bottomed portion 6 extending around the
periphery thereof which is adapted to rest on the ground and to
support the device. On the inside the base extends upwardly and
inwardly to the opening 4 leaving a space 8 for a purpose to be
described hereafter. The center opening 4 of the base extends
inwardly and upwardly along a straight line.
The base is adapted to receive an inflatable cone shaped piece 10
made of a relatively thin pliable material such as plastic or
rubber which may be folded easily into a relatively small space
when deflated. At the top of the cone-shaped piece 10 is an air
valve 12 which is used for inflating the cone. Once the cone-shaped
piece is inflated it assumes the shape of a cone from which the
apex has been removed.
As shown in FIGS. 1 and 3, the cone-shaped piece 10 is adhesively
attached to the opening flat surface 4 with the lower portion of
the cone extending below the opening 4 into the space 8. The
diameter of the bottom of the cone 10 is larger than the diameter
of the opening 4. For better visibility the cone is colored with
luminescent and reflecting materials preferred. Preferably the
colors are dyed into the material from which the cone is made prior
to manufacture of the cone. The cone can be colored with
alternating red and white rings.
The moment the cone is inflated, it will stand up firmly supported
by the base. The cone can be attached to the base either by
adhesive or a welding process. When the cone is deflated, as shown
in FIG. 3, the deflated cone will fit into the opening 4 of the
base for easy storage.
In a modified form of the invention as shown in FIG. 4, a flat
plate 16, having an outer diameter greater than the opening 4 is
pressed into a groove 18 in the base 2. The cone can be adhesively
attached either to the top surface of the plate 16 as shown in FIG.
4, or it could be attached to the bottom surface thereof. As shown,
the plate 16 forms the bottom surface of the cone, however it is
also possible to utilize a complete cone which is attached along
its bottom to the plate 16. In this form of the invention, the
plate 16 can be removed from the base.
If desired, the plate 16 can be provided with an opening for
receipt of an air valve in addition to the upper one 12 or in place
thereof.
In the form of the invention shown in FIG. 5, the lower plate 20 is
heavily reinforced in the shape of a hemisphere. This cone can be
removed from the base and used without the base. This has the
advantage of being self-righting in the event it is toppled over by
wind, a car or the like.
The device in accordance with the present invention is collapsible,
of great stability, and takes up very little storage space in the
car since the inflatable part of the cone fits into the central
hole in the base and accordingly the entire cone assembly can
easily fit into the rim of a spare tire. The inflatable cone
portion weighs very little with almost the total weight of the
device in the base part. Thus, the stability is far superior to any
other similar warning device. The air valve may be readily inflated
by mouth or by some air from a tire.
The cone portion may be manufactured of a luminescent, fluorescent
or reflecting material.
There are certain advantages to having the cone portion completely
detachable from the base. Damaged cone portions can be easily
replaced, and cone portions of different colors can be used on the
same base. Further, the cone portion can be folded up and stored in
the center hole of the base.
It is to be understood that the invention is not limited to the
embodiment disclosed which is illustratively offered and that
modifications may be made without departing from the invention; and
that the phraseology or terminology employed herein is for the
purpose of description and not of limitation.
* * * * *