U.S. patent number 3,802,378 [Application Number 05/299,703] was granted by the patent office on 1974-04-09 for all-plastic driveway marker and the like.
Invention is credited to Milton Kessler.
United States Patent |
3,802,378 |
Kessler |
April 9, 1974 |
ALL-PLASTIC DRIVEWAY MARKER AND THE LIKE
Abstract
Reflective driveway markers currently in use have metal stakes
for driving them into the ground and metal trim to hold a
reflector. In use, the markers are often hit by cars and bent,
while the metal trim scratches the car fender. A driveway marker is
described herein which is all-plastic and soft so that it will not
scratch the automobile finish, and is sufficiently flexible so that
if brushed by a car it will bend and return to its original
position.
Inventors: |
Kessler; Milton (Youngstown,
OH) |
Family
ID: |
23155900 |
Appl.
No.: |
05/299,703 |
Filed: |
October 24, 1972 |
Current U.S.
Class: |
116/63P; 135/118;
359/547; 40/607.05; 40/611.12 |
Current CPC
Class: |
E01F
9/627 (20160201); E01F 9/619 (20160201) |
Current International
Class: |
E01F
9/015 (20060101); E01F 9/017 (20060101); E01F
9/011 (20060101); E01f 009/10 () |
Field of
Search: |
;116/63P,173,28
;350/97,99,100 ;40/1C,39 ;135/15 ;248/473,353,125 ;24/81,85,262
;211/119.01 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Capozi; Louis J.
Attorney, Agent or Firm: Libman; Max L.
Claims
I claim:
1. a. An all-plastic driveway marker comprising
b. a straight flexible plastic rod having a point at one end,
c. a plastic reflector integrally fixed to the other end of said
rod,
d. said rod being sufficiently rigid to be drivable into the
ground, but sufficiently flexible to return to its original
position when forcibly deflected at least 30.degree. from a
straight line,
e. said plastic reflector having at least its exterior surface of
soft plastic material incapable of scratching a car finish.
2. The invention according to claim 1,
f. said reflector being a smooth, soft plastic ball integrally
fixed to the other end of said plastic rod,
g. said ball having a shiny reflective surface.
3. The invention according to claim 2, said plastic ball having a
slot in its upper side, and a flat plastic identification plate
resiliently held in said slot.
4. The invention according to claim 1,
f. said reflector being a strip of reflective tape wrapped around
the rod near its said other end,
g. and a thick coating of soft clear plastic material surrounding
said reflective tape and the adjacent portion of the rod.
5. The invention according to claim 1,
f. said reflector being a flat reflector with its edges embedded in
soft plastic material,
g. said soft plastic material also extending around the end of said
rod to retain said reflector in place at the top of the rod.
Description
Driveway markers are commonly sold, in the form of reflective
elements fastened to the end of a metal rod, which are intended to
be thrust into the lawn at the edge of a driveway at stratigic
points so as to indicate, particularly to a person backing out of
or into the driveway, the location of the driveway edge. In
practice, sooner or later a car will brush against one or more of
these driveway markers, and bend them out of position, while at the
same time the metal trim of the marker usually scratches the car
fender. The present invention provides an all-plastic driveway
marker of simple and inexpensive construction, and comprises a
plastic reflective element mounted on a plastic pointed rod which
is sufficiently flexible to return to its original position when
brushed by the passing car so that it is distorted from a straight
line by up to 30.degree.; it is seldom distorted by even this much
in practice, since, after all, the car driver is trying to stay
within the bounds defined by the marker, and usually merely brushes
the marker slightly, although this is sufficient to both bend the
metal stem and to scratch the car fender.
In accordance with the invention, the reflective marker is either
made of soft plastic material having a shining reflective surface
or else is a conventional reflector such as sold under the name of
"Scotchlite" in strips or rolls of adhesive tape having a
reflective surface on one side and being adhered to a surface on
the back side. When used as thus intended, the reflective surface
being exposed usually does not last very long, and must be
frequently replaced. In the present case, when this material is
used, it is imbedded in clear plastic which protects it and renders
it much more durable.
The specific nature of the invention, as well as other objects and
advantages thereof, will clearly appear from a description of a
preferred embodiment as shown in the accompanying drawing in
which:
FIG. 1 is a side elevation of one form of plastic marker;
FIG. 2 shows the top end of the same plastic marker holding a flat
identity plate such as a name plate or one bearing a house
number;
FIG. 3 shows a front view of the marker holding a house number;
FIG. 4 is a front view of a modified form of the invention;
FIG. 5 is a similar view of a still different form of the
invention;
AND FIG. 6 is a side view of the invention shown in FIG. 4.
Referring to FIG. 1, a driveway marker is shown consisting of two
elements -- the first being a rod 2 of fairly rigid but flexible
plastic material such as vinyl. The rod should be sufficiently
rigid so that it can be driven into the ground of an ordinary lawn
under normal conditions, if necessary using a hammer or mallet to
drive it in, but should be sufficiently flexible so that it can be
bent approximately 30.degree. from a straight line and still return
to the straight line condition. A suitable plastic for this purpose
is vinyl. This plastic material can be extruded and therefore made
very inexpensively in very long strips which can be cut to the
desired length and pointed at one end in a device like an ordinary
pencil sharpener. The plastic rod 2 may be solid, but is preferably
in the form of a thick-walled tube as shown, in order to conserve
material, since the same amount of material has greater strength in
the form of a tube than a solid rod.
After the rod has been cut to length, at the unpointed end a
reflective ball 4 is molded so as to integrally surround a portion
of the end of the rod and thus form a single integral unit, using
well-known molding techniques. The ball 4 is made with a shiny
surface, and may be of a highly visible color for daylight driving
conditions, such as orange or red. Being integrally molded onto the
end of the rod 2, the ball thus forms a single strong unit with the
rod, which cannot be taken apart or readily broken. The ball is
preferably made of a softer plastic material such as plasticized
vinyl. At least some of the balls 4, or if desired all of them, may
be provided with a slot 6 having an enlarged bottom edge 8, in
order to receive a suitably dimensioned plastic marker plate 10,
which is usually put on the end marker or markers near the street
end of the driveway, for the purpose of identifying the dwelling to
which the driveway leads. Since the material of the ball 4 is
fairly soft and resilient, the marker plate 10 can be pressed down
into it until its rounded bottom edge 12 seats in the enlarged
bottom of the slot as shown at 8, to firmly hold it in place. The
numbers or letters used on the plate are, of course, individual to
the residents, and are separately furnished, being either in the
form of adhesive plastic letters or any other desired form. If
adhesive-backed plastic letters are used, the entire assembly is
quite weather-proof and permanent. As is well known, the ball
reflective surface will provide a point of light directed back to
the source, which would be the headlights or back-up lights of an
automobile using the driveway, and if a series of these markers are
used along the edge of the driveway, there will be a line of points
of light defining the edges of the driveway.
FIG. 4 shows another form of the invention, in which the rod is the
same as in FIG. 1, but in this case a flat reflecting surface 14 is
employed, which is somewhat more efficient as a reflector than the
ball shown in FIG. 1, and is preferably made of reflective tape
commonly available under the name "Scotchlite". However, in the
present case, this reflective surface which may and preferably is
formed by two such pieces back-to-back so that they will work in
either direction, is imbedded in a thick rounded, knob-like member
of molded clear soft plastic 16 which not only surrounds the
reflective material and protects it, but also extends down and over
the end of the rod 2' as shown at 18 so that a single unitary
marker is formed. Thus the soft resilient plastic 16 entirely
encases and protects the reflector marker, giving it the necessary
strength and durability for the purpose. If the proper grade of
plastic is used, it will be sufficiently strong so that if
necessary it can be driven into the ground by a hammer striking on
the plastic 16.
FIG. 5 shows still another form of the invention, in this case the
rod 2" is the same as before, and a strip of the adhesive flexible
"Scotchlite" tape 24 is wrapped around its end, after which a
rounded knob-like member of clear molded plastic 26 encases the
entire end of the rod for the same purpose as before. The
reflective tape is now in the form of a cylindrical surface at the
end of the rod, and is therefore effective in all directions,
without having to be oriented as does a flat surface.
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