U.S. patent number 3,888,336 [Application Number 05/458,115] was granted by the patent office on 1975-06-10 for sidewalk plug-in pole for car heaters, warmers and the like.
Invention is credited to James Zajic.
United States Patent |
3,888,336 |
Zajic |
June 10, 1975 |
Sidewalk plug-in pole for car heaters, warmers and the like
Abstract
A vertical standard is mounted on private property adjacent the
sidewalk edge and an overhanging portion spans the sidewalk well
above head level and terminates in a plug-in box or receptacle. The
vertical standard is connectable to a source of electrical power by
cable through the device extending between the receptacle and then
underground to the source of electrical energy at the residence or
the like. It enables cars parked at the curb to be plugged in, in
winter, in order to operate the engine immersion heater and/or an
interior car warmer and eliminates a loose cord crossing the
sidewalk, poles at the curb which can interfere with snow ploughs
and the like, and which also is out of reach of children, for
safety purposes.
Inventors: |
Zajic; James (Wainwright,
Alberta, CA) |
Family
ID: |
4096597 |
Appl.
No.: |
05/458,115 |
Filed: |
April 5, 1974 |
Foreign Application Priority Data
Current U.S.
Class: |
191/1R; 174/38;
191/12R; 219/523; 191/2; 219/202 |
Current CPC
Class: |
B60H
1/00257 (20130101); H02B 1/50 (20130101) |
Current International
Class: |
B60H
1/00 (20060101); H02B 1/00 (20060101); H02B
1/50 (20060101); B60l 009/00 () |
Field of
Search: |
;219/523 ;248/317
;191/1R,2,3,4,7,12 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Wood, Jr.; M. Henson
Assistant Examiner: Keen; D. W.
Attorney, Agent or Firm: Ade; Stanley G.
Claims
What I claim as my invention is:
1. A plug-in device for supplying a source of electrical energy for
car heaters and the like of cars parked at the curb at the edge of
a sidewalk; comprising in combination a vertical standard adjacent
the inner edge of the sidewalk, but spaced therefrom, an
over-spanning portion extending from the upper end of said vertical
standard, an electric plug receptacle on the distal end of said
over-spanning portion, connectable to a source of electrical energy
via said over-spanning portion and said vertical standard, said
over-spanning portion being spaced above said sidewalk by at least
six feet, and means to anchor said vertical standard within the
ground, said means including a pipe tee secured at the base of said
vertical standard, and relatively short lengths of pipe extending
outwardly at right angles from each side of said tee in a
substantially horizontal plane, to stabilize said vertical
standard.
2. The device according to claim 1 in which said over-spanning
portion terminates a relatively short down-turned portion at the
distal end thereof, said receptacle being at the lower end of said
down-turned portion.
3. A plug-in device for supplying a source of electrical energy for
car heaters and the like of cars parked at the curb at the edge of
a sidewalk; comprising in combination a vertical standard adjacent
the inner edge of the sidewalk, but spaced therefrom, an
over-spanning portion extending from the upper end of said vertical
standard, an electric plug receptacle on the distal end of said
over-spanning portion, connectable to a source of electrical energy
via said over-spanning portion and said vertical standard, said
over-spanning portion being spaced above said sidewalk by at least
6 feet, said vertical standard including an upper portion and a
lower portion, adaptor means screw-threadably connecting said
portions together in end to end relationship, and a detachable
electrical plug connector at the junction of said portions
electrically connectable on one side thereof to said source of
electrical energy, and on the other side thereof to said
receptacle.
4. The device according to claim 3 which includes means to anchor
said vertical standard within the ground, said means including a
pipe tee secured at the base of said vertical standard, and
relatively short lengths of pipe extending outwardly at right
angles from each side of said tee in a substantially horizontal
plane, to stabilize said vertical standard.
5. The device according to claim 4 in which said over-spanning
portion terminates a relatively short down-turned portion at the
distal end thereof, said receptacle being at the lower end of said
down-turned portion.
6. The device according to claim 3 in which said over-spanning
portion terminates a relatively short down-turned portion at the
distal end thereof, said receptacle being at the lower end of said
down-turned portion.
Description
BACKGROUND OF THE INVENTION
In many Canadian and American town and villages, it is common
practice for cars to be parked at the curb overnight because of the
difficulty of obtaining access to the houses or grounds for various
reasons.
During the relatively cold winters experienced in many parts of
Canada and the United States, it is essential that such cars be
connected to a source of electrical energy particularly when they
are left overnight, such source of electrical energy operating
immersion heaters and/or interior car warmers and it is
conventional, although in most instances illegal, to have a long
extension cord extending from a convenient receptacle in the
residence to the car where the immersion heater and/or interior
warmer may be plugged in. This cord normally lies across the
sidewalk and is a constant hazard to pedestrians who may well trip
over the cord.
Furthermore, sidewalk ploughs cannot operate successfully to clear
snow from sidewalks if a plurality of electrical cords span the
sidewalk at intervals therealong.
While it is possible, although expensive to provide vertical
standards at the curb edge which may hold a receptacle,
nevertheless these are not satisfactory because they interfere not
only with snow ploughs on the sidewalks, but also road snow
ploughs. When a road or sidewalk plough operates, it is quite
normal for the snow to be piled at the curb or edge of the sidewalk
and such poles at the curb would readily become covered with snow
besides being readily accessible to children with the consequent
dangers of live voltage being present particularly where there are
snowy or slushy conditions.
SUMMARY OF THE INVENTION
The present invention overcomes all of the disadvantages mentioned
heretofore by providing a vertical standard normally situated upon
the edge of the owner's property and having an over-spanning
portion spanning the sidewalk well above the head level of
pedestrians and being provided with a plug-in receptacle at the
distal end thereof to which the motorist can readily attach an
extension cord when it is desired to plug-in the car standing at
the curb. Underground wiring or the like may extend from the base
of the standard to the residence and may be connected to a source
of electrical energy. This means that the entire sidewalk area is
clear so that snow ploughs can operate either on the sidewalk or
upon the roads and furthermore, pedestrians cannot trip over loose
extension cords.
The principal object and essence of the invention is therefore to
provide a device of the character herewithin described which
provides a plug-in receptacle for electrical apparatus on cars
parked at the curb by means of an over-spanning pole anchored by a
vertical section on private property adjacent the inner edge of the
sidewalk.
Another object of the invention is to provide a device of the
character herewithin described which is out of reach of children so
that accidents cannot occur.
Still another object of the invention is to provide a device of the
character herewithin described which eliminates the conventional
extension cords extending across sidewalks and the like from
private property to cars parked at the curb edge.
A still further object of the invention is to provide a device of
the character herewithin described which leaves a clear area on the
sidewalks and roads for snow clearing purposes.
Still another object of the invention is to provide a device of the
character herewithin described which is simple in construction,
economical in manufacture and otherwise well suited to the purpose
for which it is designed.
With the foregoing objects in view, and such other objects and
advantages as will become apparent to those skilled in the art to
which this invention relates as this specification proceeds, my
invention consists essentially in the arrangement and construction
of parts all as hereinafter more particularly described, reference
being had to the accompanying drawings in which:
DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side elevation of the device showing a sidewalk in
section.
FIG. 2 is a view of the receptacle taken at right angles to FIG.
1.
FIG. 3 is an enlarged fragmentary sectional view showing the
connection between adjacent lengths of vertical standard.
FIG. 4 is an enlarged fragmentary top plan view of one form of
anchoring system for vertical standard.
In the drawings like characters of reference indicate corresponding
parts in the different figures.
DETAILED DESCRIPTION
Proceeding therefore to describe the invention in detail, reference
character 10 shows the cross section of a sidewalk with 11
indicating the curb edge thereof adjacent the street area 12, and
13 indicating the inner edge of the sidewalk which normally is
adjacent private property belonging to residences bordering the
sidewalk.
The device collectively designated 14 consists of a vertical
standard 15 of hollow pipe or tubing which extends upwardly from
the ground adjacent to but spaced from the inner edge 13 of the
sidewalk.
The upper end curves at right angles to the vertical as indicated
by reference character 16 and an adaptor 16 connects an
over-spanning portion 18 to this curved portion 16. This
over-spanning portion spans the sidewalk 10, but is spaced
thereabove and terminates in a down-turned portion 19 formed on the
distal end of the over-spanning portion 18.
A plug-in receptacle box 20 is secured to the distal end 21 on the
down-turned portion 19 which extends through the upper side 22 of
the receptacle and is secured by means of nuts 23 upon either side
of the upperside 22 as clearly shown in FIG. 2.
The over-spanning portion 18 and the down-turned portion 19 are
also made of hollow pipe or tubing and form a continuous channel
from the receptacle 20 downwardly to the base 24 of the vertical
standard 15.
This base is normally anchored below ground level and preferably
includes stabilizing means taking the form of a pipe tee 25 with
the lower end 24 of the vertical standard being screwed within the
upper aperture 26 of the pipe tee.
Relatively short lengths of pipe 27 are screw threadably secured to
the sides of the pipe tee and are extended upwardly at right angles
therefrom in a horizontal plane thus acting as a stabilizing anchor
and may be embedded in concrete if desired.
A further pipe 28 is screw threadably secured to the rear side 29
of the pipe tee and may extend underground to a source of
electrical energy in the nearby residence in the usual way.
Electrical conductors 30 extend through pipe 28 to the tee and then
upwardly through the standard 15, through the over-spanning portion
18 and terminate in the receptacle box 20 to which they are
connected in the conventional manner, thus supplying a source of
electrical energy to the receptacle 32 within the box 20.
It is sometimes desirable to remove the device during the summer
months under which circumstances, the vertical standard and
over-spanning portion may be removed either at a hedge level
indicated by dotted line 33 or at ground level or adjacent thereto
indicated by reference character 34.
In either case, one form of such connection is shown in FIG. 3.
The vertical standard includes a lower portion 35 and an upper
portion 36 connected together by means of a threaded adaptor 37
screw threadably engaging over the screw threaded ends of the
portions 35 and 36 thus connecting together in adjacent
relationship one with the other.
An electrical connector consisting of upper portion 38 and a lower
portion 39 is secured within the adjacent ends of the sections or
portions 36 and 35 respectively and the electrical conductors are
connected to the portions of this connector in the usual way.
When it is desired to connect or disconnect at point 33 or 34, the
adaptor is rotated so that it clears the lower section 35 thus
enabling the connector sections to be pulled apart.
To re-install, the connectors are plugged in one with the other and
the adaptor rotated in the opposite direction thus causing same to
screw threadably engage the upper end of the lower portion 35 thus
connecting the portions 35 and 36 together.
In operation, a conventional extension cord 40 may be plugged into
the receptacle 32 whereupon it hangs vertically downward as clearly
shown in FIG. 1. It may then be connected to the conventional
connector normally provided at the front of the car which is
standing at the curb edge 11 so that the extension cord does not
interfere with pedestrians and/or snow ploughs being used.
The vertical standard being on private property is also clear of
the sidewalk and of course it will be appreciated that the height
of the over-spanning portion 18 should be at least 6 feet above the
sidewalk level in order to not interfere with pedestrians passing
therebelow.
Since various modifications can be made in my invention as
hereinabove described, and many apparently widely different
embodiments of same made within the spirit and scope of the claims
without departing from such spirit and scope, it is intended that
all matter contained in the accompanying specification shall be
interpreted as illustrative only and not in a limiting sense.
* * * * *