U.S. patent number 3,790,115 [Application Number 05/217,020] was granted by the patent office on 1974-02-05 for base for air conditioning condenser apparatus.
This patent grant is currently assigned to SAID Easterday by said Fox. Invention is credited to Ralph E. Easterday, Charles S. Fox.
United States Patent |
3,790,115 |
Fox , et al. |
February 5, 1974 |
BASE FOR AIR CONDITIONING CONDENSER APPARATUS
Abstract
A base for restingly supporting an operative air conditioning
condenser apparatus. The base is intended to be restingly placed on
a level planar support surface and includes a main body member
having a canted upper surface which slopes downwardly and outwardly
in several directions from a centrally located high point. The base
also includes a plurality of elevated support pads which support
the condenser apparatus in a manner that allows for air circulation
subjacent the condenser apparatus. The upper surface of the support
pads are canted to slope inwardly and downwardly and include
self-lubricating structure to cause the condenser apparatus to
slidably gravitate to a substantially level position. An anchoring
and/or grounding rod is included which is received in a vertical
extending aperture in the base and may be driven into certain of
the support surfaces, e. g., the earth.
Inventors: |
Fox; Charles S. (Germantown,
TN), Easterday; Ralph E. (Memphis, TN) |
Assignee: |
SAID Easterday by said Fox
(N/A)
|
Family
ID: |
22809357 |
Appl.
No.: |
05/217,020 |
Filed: |
January 11, 1972 |
Current U.S.
Class: |
248/679; 248/678;
248/346.5; 52/295 |
Current CPC
Class: |
F16M
3/00 (20130101); F24F 13/20 (20130101); F25D
23/006 (20130101) |
Current International
Class: |
F24F
13/00 (20060101); F25D 23/00 (20060101); F24F
13/20 (20060101); F16M 3/00 (20060101); F16m
005/00 () |
Field of
Search: |
;248/19,20,21,22,23,346,350,346.1,146,152 ;52/295,714 ;62/295 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Foss; J. Franklin
Attorney, Agent or Firm: Walker, III; John R.
Claims
1. A base for restingly supporting an operative air conditioner
condenser apparatus, said base comprising a main body member having
upper and lower substantially horizontal surfaces thereto, said
upper surface having a common point disposed substantially
centrally of the area thereof, said lower surface including
structure for restingly engaging a level planar supporting surface,
a plurality of at least three support pad means attached to said
main body member for supporting the condenser apparatus a spaced
distance above said upper surface, said plurality of pad means
projecting upwardly from said upper surface a spaced apart distance
from the other and being disposed adjacent the perimeter of said
main body member, said plurality of pad means including
self-lubricating upper surfaces, and said upper surfaces of said
pad means being canted to slope inwardly and downwardly towards
said common point for causing the condenser apparatus to slidably
gravitate to a substantially level
2. The base of claim 1 in which is included drain means for
carrying fluid which may accumulate thereon outwardly to the
surrounding supporting
3. The base of claim 2 in which said drain means includes canting
said upper surface of said main body member to slope downwardly and
outwardly
4. The base of claim 3 in which is included reinforcing means for
structurally strengthening said main body member and for
distributing the
5. The base of claim 4 in which said reinforcing means includes
rib-like structure integrally attached to said main body member and
being symmetrically arranged thereof in a grid-like pattern, said
grid structure projecting downwardly from said lower surface of
said main body member and having the lower surfaces thereof passing
through a single plane for
6. The base of claim 1 in which is included means for anchoring
said base
7. The base of claim 6 in which is included means for
electrically
8. The base of claim 7 in which said anchoring means and said
grounding means includes metallic rod means which may be driven
into certain of the supporting surfaces, and said base being
provided with a vertical
9. The base of claim 1 in which said self-lubricating surfaces
consist of
10. The base of claim 5 in which said main body member, said
plurality of pad means, and said grid structure are integrally
molded from expanded high density polyethylene.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to base structure for supporting air
conditioning condenser apparatus.
2. Description of the Prior Art
Air conditioning condenser apparatus usually are supported on a
poured concrete slab. This practice has certain disadvantages, a
few of which are as follows:
1. Considerable manhours are expended in preparing the base site
which includes cutting and fitting form structure to hold the
concrete while it cures.
2. Additional manhours are expended in removing the form structure
subsequent to the concrete curing.
3. Ready-mixed concrete is not practical or usually available in
such small quantities as is needed for a condenser base. Therefore,
hand-mixing of concrete is usually the only recourse for the
contractor. This, too, is costly in manhours and is unwieldy since
a mixing container and other well known paraphernalia for mixing
the concrete must be readily available at the base site.
4. Subsequent to pouring and finishing the surface of the concrete,
the workman is unable to proceed with the task of installing the
air conditioning condensing apparatus until the concrete has cured,
i.e., a period of several days. This usually results in additional
lost manhours since the workman must gather together his tools and
equipment and proceed to a job usually at a different location.
The above problems and disadvantages have long been recognized and
a recent practice in rooftop installations is to fabricate a base
which may be carried to the base site and simply placed on the
roof. This portable base is constructed from wood which is covered
with sheet metal. Obviously, the metal must be made watertight,
therefore, the seams must be soldered or the like. This portable
base has certain disadvantages: First, the metal eventually is
overcome by rust which exposes the wood to insects and moisture
which quickly decomposes the wood. This results in a rather
expensive replacement procedure which includes resetting the
condenser apparatus. Secondly, construction costs of the portable
base are excessive, i.e., considerable manhours are expended in the
fabrication thereof.
Also, it has been a recent practice to fabricate concrete slabs
that can be manually carried to the job site. This type base has
certain disadvantages: First, there is the limitation as to the
maximum weight that can be handled with safety and/or excessive
breakage. Secondly, there is the problem relative to the formation
of condensate on the concrete. This moisture tends to aid in the
deterioration of the metal cabinet of the unit.
A preliminary patentability search revealed the following U. S.
patents: Tilson et al. U.S. Pat. No. 2,545,320; Ecker U.S. Pat. No.
2,916,233; and Smith et al. U.S. Pat. No. 3,524,329. None of the
above references show or suggest applicant's base structure.
SUMMARY OF THE INVENTION
The present invention is directed towards overcoming the
disadvantages and problems relative to previous bases for
supporting air conditioning condenser apparatus. The concept of the
present invention is to provide a portable base for supporting
operable air conditioning condenser apparatus which is
non-corrosive and relatively inexpensive. I have found that a
substance well suited for the construction of the base of the
present invention is expanded polyethylene resin presently being
offered by the Amoco Chemical Corporation under the tradename of
"Amoco High-Density Polyethylene." Typical properties of Amoco's
high-density polyethylene resins, etc., are available from the
Plastics Division, 130 East Randolph Drive, Chicago, Ill. 60601.
Therefore, no attempt will herein be made to fully describe the
Amoco 670 B-4 High-Density Polyethylene. However, it should be
stated that one inherent property of expanded polyethylene is that
it has a self-lubricating surface which is made use of in the base
of the present invention in a manner yet to be described.
Additionally, this substance is expanded under extremely high heat
and pressure which gives it optimum strength and durability for the
purpose herein described. In addition, it should be pointed out
that in place of expanded polyethylene, solid polyethylene with
self-lubricating properties may be used without departing from the
spirit and scope of the present invention.
The base of the present invention is intended to be restingly
placed on a level planar support surface, e.g., a level area of
earth or a rooftop, etc. The base includes a main body member
having a canted upper surface which slopes downwardly and outwardly
in several directions from a centrally located high point, thus
encompassing a means for carrying fluid, e.g., rainwater, which may
accumulate on the condenser apparatus outwardly to the surrounding
support surface. The base also includes a plurality of elevated
support pads which support the condenser apparatus in a manner that
allows for air circulation subjacent the condenser apparatus, thus
prolonging the life of the usual metal cabinet which houses the
apparatus.
The upper surface of the support pads are canted to slope inwardly
and downwardly to cause the condenser apparatus to slidably
gravitate to a substantially level position. The inherent
self-lubricating property of the above-mentioned expanded
polyethylene is made use of in achieving this level position. In
other words, the cabinet structure of the condenser apparatus
merely rests upon the support pads requiring no anchoring bolts or
the like.
An anchoring and/or grounding metallic rod is included which is
received in a vertical extending aperture in the base and may be
driven into the earth to receive an electrical grounding strap to
facilitate grounding of the condenser apparatus.
The base of the present invention preferably includes integral
riblike structure symmetrically arranged in an optimum pattern for
structurally strengthening the base with a minimum quantity of
polyethylene and for distributing the load of the condenser
apparatus over the area of the base.
The advantages of the base of the present invention over the
above-mentioned poured concrete slab are: First, elimination of the
manhours in preparing the base site, particularly the time and
materials spent in setting the forms irrespective of the weather.
Secondly, the savings in manhours in removing the forms. Thirdly,
the aggravation of mixing the concrete is obviated. Fourthly, the
workman can pick up a portable base of the present invention and
proceed to the installation site and after quickly leveling an area
for resting the base of the present invention thereon, he can
immediately proceed with the task of installing the air
conditioning system including the condenser apparatus. Fifthly, the
homeowner, with the use of the present invention, can readily
change the location of the condenser, if he desires, whereas, with
a poured concrete slab this is not possible.
The advantages of the base of the present invention over the
above-described metal clad wood base are: First, the cost of
manhours is greatly reduced, i.e., particularly the cost of
manually soldering the seams of the metal cladding. Secondly, the
base of the present invention is practically indestructible, e.g.,
not subject to rust and/or decomposure. In other words, the base of
the present invention does not break down from extreme temperature
changes nor is it adversely affected by solar radiation. Stated
another way, problems common to most prior plastics are
non-existent in the substance from which the base of the present
invention is constructed.
An additional advantage of the base of the present invention is
that it should be sound-absorbing so that the noise generated by
the compressor or other associated components within the condenser
apparatus should be absorbed or reduced rather than amplified. In
other words, the base of the present invention can be thought of as
a cushion for restingly supporting the operating air conditioning
condenser apparatus.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a top or plan view looking down on the base of the
present invention.
FIG. 2 is a sectional view taken as on the line II--II of FIG.
1.
FIG. 3 is a sectional view taken as on the line III--III of FIG.
1.
FIG. 4 is a bottom view of the base of the present invention
showing the riblike reinforcing structure thereof.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The base 11 of the present invention is intended for restingly
supporting an operative air conditioning condenser apparatus 13,
i.e., precluding the use of anchoring bolts or the like. The base
11 is intended to be restingly placed on a level planar support
surface 15, e.g., a leveled area of earth or a rooftop, etc. The
base 11 includes a main body member 17 having upper and lower
substantially horizontal surfaces 19, 21 thereto. A plurality of
support pads 23, 25, 27, 29 are included and preferably are
integrally attached to the main body member 17 for supporting the
condenser apparatus 13 a spaced distance above the surface 15. From
FIG. 1 of the drawings, it may clearly be seen that the support
pads 23, 25, 27, 29 are arranged a spaced apart distance one from
the other and are disposed adjacent the perimeter of the main body
member 17. From FIGS. 2 and 3 of the drawings, it may be seen that
the support pads 23, 25, 27, 29 project upwardly from the upper
horizontal surface 19, thus defining perpendicularly disposed
channels 31, 33 which allow for air circulation subjacent the
condenser apparatus 13. The support pads 23, 25, 27, 29
respectively include canted upper surfaces 35, 37, 39, 41 arranged
to slope inwardly and downwardly in the direction of arrows 43
towards a common point 45 for reasons yet to be disclosed. The
inherent self-lubricating property of the expanded polyethylene
and/or solid polyethylene above disclosed under the "Summary of the
Invention" and the cooperating canted surfaces 35, 37, 39, 41 cause
the condenser apparatus 13 to slidably gravitate to a substantially
level position as depicted in FIG. 2 of the drawings. An important
feature of the present invention is that the condenser apparatus 13
will remain in place during the operation thereof without the usual
anchoring bolts or the like.
It should be pointed out that the cabinet structure for a typical
condenser apparatus 13 includes support members (not shown) for
packing and shipping purposes which usually are constructed of
teflon or the like. Accordingly, the support members preferably are
left attached to the cabinet and, in fact, become the only
structure of the condenser apparatus 13 to engage the base 11.
However, it should be understood that the support members are
optional since the corners of the cabinet structure for the
condenser apparatus 13 may restingly engage the base 11. In this
regard, it should be pointed out that the angular slope of the
surfaces 35, 37, 39, 41 preferably is very slight, e.g.,
approximately 5.degree. .
It should also be understood that the overall shape of the base 11,
as depicted in the drawings, is a preferred embodiment for
illustrative purposes only. In other words, the top view of the
base 11 may resemble a geometric figure other than a square, e.g.,
circular, semi-circular, or rectangular, etc.
The upper surface 19 of the main body member 17 preferably is
canted to slope downwardly and outwardly in a plurality of
directions from the common point 45, i.e., the common point 45
being the centralmost high point of the surface 19. More
specifically, the lower surface of the channel 31 slopes outwardly
from the common point 45 in opposite directions and the lower
surface of the channel 33 slopes outwardly from the common point 45
in opposite directions for carrying fluid, e.g., water, which may
flow thereon outwardly to the surrounding supporting surface
15.
The base 11 also includes riblike structure 47 integrally attached
to the main body member 17 and preferably being arranged thereon in
a square configuration substantially as depicted in FIG. 4 of the
drawings. The riblike structure 47 projects downwardly from the
lower surface 21 of the main body member 17, thus establishing
lower surfaces 49 thereof which pass through a single plane for
restingly engaging the supporting surface 15. It should be
understood that the grid structure 47 may be arranged in other
geometric figures without departing from the spirit and scope of
the present invention. Also, diagonal ribs 50 are preferably
integrally provided respectively on the lower surfaces of support
pads 23, 25, 27, 29 for adding structural strength thereto.
Additionally, the base 11 preferably includes perimeter support
structure 51 having a cross section similar in shape to that
depicted in FIGS. 2 and 3 of the drawings. The perimeter support
structure 51 has a lower surface 53 thereof which passes through
the single plane alluded to above in which the lower surfaces 49
pass through. In other words, the lower surfaces 53 also restingly
engage the planar supporting surface 15.
The base 11 also includes a plurality of retaining edge ridges 55,
57, 59, 61 which project upwardly from the respective upper
surfaces 35, 37, 39, 41 of the support pads 23, 25, 27, 29.
The base 11 preferably is provided with a vertical extending
aperture 63 for receiving a metallic rod 65. The rod 65 preferably
includes a double headed portion 67 adjacent the one end thereof
and a pointed portion 69 at the opposite end. The lower of the two
heads adjacent the end 67 is intended to contiguously engage the
surface 35 when the rod 65 extends through the aperture 63. The
pointed end 69 thereof is intended to be driven into the earth or
the support surface 15. Accordingly, the space between the two
heads is provided for attaching a grounding strap (not shown) for
suitably electrically grounding the cabinet structure associated
with the condenser apparatus. Thus, the rod 65 serves a dual
function, i.e., electrically grounding the condenser apparatus 13
and provides a means for anchoring the base 11 to the supporting
surface 15.
Although the invention has been described and illustrated with
respect to a preferred embodiment thereof, it is not to be so
limited since changes and modifications may be made therein which
are within the full intended scope of the invention.
* * * * *