U.S. patent number 3,567,020 [Application Number 04/828,594] was granted by the patent office on 1971-03-02 for pool skimmer.
This patent grant is currently assigned to N/A. Invention is credited to William O. Baker, Brackston T. Whitaker.
United States Patent |
3,567,020 |
Whitaker , et al. |
March 2, 1971 |
POOL SKIMMER
Abstract
A pool skimmer and the like including a skimmer assembly adapted
for use with residential and commercial installations with means
for selectively operatively connecting various lines and apparatus
in a system for liquid surface skimming, vacuuming and liquid
draining having means for cleaning and filtering pool liquid for
reuse thereof, wherein means are provided for simplifying
establishing all necessary conduit connections for main outlet
plumbing, skimmer plumbing and vacuum connections, the assembly
including selectively usable and operable control and vacuum plate
and float stopper to establish desired operating conditions.
Inventors: |
Whitaker; Brackston T. (Tucson,
AZ), Baker; William O. (Huntington Beach, CA) |
Assignee: |
N/A (N/A)
|
Family
ID: |
25252239 |
Appl.
No.: |
04/828,594 |
Filed: |
May 28, 1969 |
Current U.S.
Class: |
210/94;
210/167.12; 210/121 |
Current CPC
Class: |
E04H
4/1272 (20130101) |
Current International
Class: |
E04H
4/00 (20060101); E04H 4/12 (20060101); B01d
023/00 () |
Field of
Search: |
;210/85,94,169 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Adee; John
Claims
We claim:
1. A pool skimmer and the like comprising:
A. a skimmer body;
B. a surface liquid weir operably opening into said skimmer
body;
C. a removable strainer basket positioned in said body below said
wire;
D. a pump outlet port in said body adjacent said basket;
E. a skimmer inlet port in said body above said basket;
F. a control and vacuum plate rotatably supported above said inlet
port and having an opening therethrough;
F.sub.1. a trimmer valve shoe depending from said plate;
G. means for selectively closing said plate opening; and
said valve shoe, upon rotation of said plate, selectively partially
or completely opening or closing said skimmer inlet port.
2. A pool skimmer as claimed in claim 1, and including seal means
between said plate and said body for sealing off an upper portion
of said body into which said weir opens from a lower portion of
said body, in conjunction with closure of said plate opening by the
closure means therefor, and wherein upon rotation of said plate to
open said skimmer inlet all liquid flow will be drawn through said
skimmer inlet when brushing a pool, or lowering pool water level or
draining a pool, with all water passing through said strainer
basket.
3. A pool skimmer as claimed in claim 1, said plate opening closure
means comprising a buoyant float stopper floatingly attached to
said plate and operable during normal pool operation to permit flow
of surface waters traveling over said weir to flow through said
plate opening, through said strainer basket and through said pump
outlet port, and further being so operable when water level in a
pool drops below an effective skimming level whereby water level in
said body lowers drastically, that said float stopper is drawn into
said plate opening, thereby creating a sealed circuit from said
skimmer inlet port through said strainer basket and through said
pump outlet port.
4. A pool skimmer as claimed in claim 3, said plate opening being
tapered, and said buoyant float stopper being of a corresponding
configuration and size, facilitating positive sealing engagement
with said opening and being operable upon lowering of water level
in said body to automatically seat in said tapered opening.
5. A pool skimmer as claimed in claim 4 and further including a
float stopper holder in said plate in which said float stopper may
be securely wedged during pool vacuuming operations or when
otherwise not in use.
6. A pool skimmer as claimed in claim 2, and further including a
retaining ring in said body for coaction with said plate to lock
said plate in position, while permitting rotation thereof, and
serving to prevent plate dislodgment by air bubbles or plate
buoyancy during inoperable pump conditions.
7. A pool skimmer as claimed in claim 1, said plate opening being
adapted for establishing a vacuum hose connection therethrough, and
with said trimmer valve shoe closing said skimmer inlet port
creating a direct circuit from said plate opening through said
strainer basket and through said pump outlet port.
8. A pool skimmer as claimed in claim 1, said body having an
equalizer inlet in the lower end thereof, a spring loaded equalizer
valve in said equalizer inlet, a flow balance slide valve in said
body slidably juxtaposed over said pump suction outlet, said flow
balance slide valve being operable to meter and control flow from a
plurality of skimmers to establish a balanced flow from each
skimmer.
9. A pool skimmer as claimed in claim 8, said flow balance slide
valve being operable to regulate flow through said skimmer in
conjunction with controlled flow through said skimmer inlet.
10. A pool skimmer as claimed in claim 1 wherein said control and
vacuum plate is constructed of optically clear material for
permitting visual inspection therethrough of said strainer
basket.
11. A pool skimmer as claimed in claim 1, said control and vacuum
plate and said body having coactable indicia thereon to visually
indicate different operating positions of said plate and said
trimmer valve shoe.
Description
BACKGROUND OF THE INVENTION
Heretofore skimming apparatus and systems have been used in
connection with swimming pools and the like adapted to permit
varying operations with respect to operation and maintenance of a
pool. The apparatus and system are normally operable for filling or
draining a pool and additionally provide for liquid surface
skimming, pool brushing and pool vacuuming with means in the system
for cleaning and filtering pool liquid to permit reuse thereof.
Such systems and apparatus are well known in the art but in most
such installations have required complex conduit systems and
laborious and distasteful operations were required to switch from
one operating condition to another or for setting up the apparatus
for any given phase or type of operation. Such operations include
for example manually closing or opening of various conduit outlets
from a skimmer body by manipulation of removable closures, some of
which necessitated immersion of a hand into a skimmer assembly for
removal of a strainer basket and proper insertion of plugs and/or
removal thereof and interchanging from one conduit opening to
another.
SUMMARY OF THE INVENTION
It is accordingly a principal feature of the present invention to
provide a pool skimmer and the like including a skimmer assembly
having a plurality of conduit or line openings therein and which
includes a selectively operable and usable control and vacuum plate
which can be simply operated to selectively partially or completely
close one conduit opening from the skimmer assembly by a simple
operation of rotating a plate and a float stopper is coactable with
the plate and operable to open or close an inlet into the skimmer
assembly from a surface skimmer portion of the construction. Means
are also incorporated whereby the skimmer body can be incorporated
in either residential or commercial pool establishments or
installations with varying structures as required for operating
under these conditions. Utilization of the assembly and its
construction minimize required conduits in the system and the
various connections required for all functions of maintaining a
pool with respect to liquid filling or draining and cleaning
thereof for normal operations are incorporated in and through a
single fixture.
The present invention while overcoming undesirable features or
characteristics of heretofore known constructions also provides a
highly simplified and compact unit susceptible of easy and rapid
operation to place in condition for varying phases of operation as
normally required in connection with pools and systems therefore.
While a preferred embodiment of the invention will be specifically
described with reference to swimming pools including residential
and commercial types, the skimmer is adapted for wider usage in
connection with any form of contained liquid bodies such as ponds,
lakes, etc., where analogous operations are desirable.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view, parts being broken away, of a skimmer
assembly in accordance with the present invention;
FIG. 2 is top plan view of a control and vacuum plate as
incorporated in the invention;
FIG. 3 is a vertical sectional view taken on line 3-3 of FIG. 2;
and
FIG. 4 is a bottom plan view of the control and vacuum plate.
Referring now in more detail to the drawings, there is shown a
skimmer assembly generally designated 10 adapted for installation
in a normal manner in the concrete or the like surrounding a
swimming pool and/or connection with the various conduits
incorporated in such a system and leading to a pump and filter
assembly of a known type. The skimmer assembly 10 includes a
generally cylindrical skimmer body 12 of any desired material
preferably of plastic and having an open top 14 and a bottom 16
which can be formed, preferably, with an equalizer inlet, generally
designated 18 which is utilizable in connection with multiple
skimmer installations such as most normally found in public pool
installations, and which as will be hereinafter pointed out can be
rendered inoperable when the invention is used for residential pool
installations. A closure lid 20 of a standard removable type is
adapted to close open top 14. A skimmer throat 22 is formed as a
projecting extension on skimmer body 12, opening into the interior
of the assembly and having a surface skimming inlet opening 24
which, as in normal practice, is located in the pool construction
so as to open through a sidewall thereof and is so placed as to be
partially immersed in liquid in the pool under normal operating
conditions. A weir generally designated 26 includes a weir spring
hinge 28 consisting of metal or plastic, secured in skimmer throat
by securement means 30 in proximity to opening 24. The upper end 32
incorporates a weir block 34 with weir fill material 36 therein
which serves to weight the upper free end of the weir hinge to
facilitate operation in conjunction with water flow thereover.
Preferably the material of weir block 34 has a specific gravity
such that in conjunction with the tension of the weir spring 28
operates to permit surface liquid or water flow and is sufficient
to maintain a differential liquid level to insure substantially
continuous high velocity surface skimming irrespective of normal
variations of liquid level. It is to be understood that in lieu of
the shown and described type of weir, a floating weir of a known
type can be used or other forms of spring tension weir blocks can
be incorporated.
The skimmer body 12 is provided with an interior lower flange 38
adapted to removably support a strainer basket 40 in a usual
manner. A removable control and vacuum plate generally designated
42, the construction of which will be hereinafter set forth in
detail, is supported on interior upper flange 44. A pump suction
outlet 46 is provided on skimmer body 12 and a skimmer inlet 48
likewise opens into the skimmer body. The outlet 46 is in proximity
to the bottom of the skimmer body in a region within the
extremities of strainer basket 40 and is provided with a flow
balance slide valve 50 and which is installed for use in connection
with commercial pools or where multiple skimmers are installed
requiring an equalizer line. This slide valve can be used to
control flow from each of the plurality of skimmers to establish a
balanced flow from each skimmer. While this slide valve is normally
not required for residential pool installations it is incorporated
in the present construction so as to render the device operable for
both residential and commercial installations and can be used as
desired. Equalizer inlet 18 is adapted to be closed by a spring
loaded equalizer valve 52 when the invention is to be installed on
commercial pools or where multiple skimmers are installed requiring
an equalizer line. When using the device for residential pools,
this equalizer valve can be omitted and the opening closed by a
plug of any desired construction as will be obvious. Operation of
the equalizer valve will be obvious and when utilized in commercial
applications will permit adequate water to pump under limited flow
rates, such as for example, up to 25 gallons per minute. If higher
flow rates are required the control and vacuum plate, as will be
described hereinafter, is necessary to create a positive circuit
utilizing mechanism serving as a low water seal.
The control and vacuum plate 42 includes a rim 54 having in
proximity to its outer periphery sealing means such as an O-ring 56
engageable with the upper surface of flange 44. An inner portion of
the plate is preferably or desirably of truncated conical
configuration as indicated at 58 in the nature of a funnel. A
tapered opening 60 is provided opening into the strainer basket 40.
A float stopper 62 is secured to plate 42 by means of a cord or the
like as shown at 64, attached at its free end to a hand ear 66 on
the upper surface of the plate. The plate is also provided with a
float stopper holder 68, the operation of which will be described
hereinafter. The float can under differing conditions of operation
be free to float in liquid entering the skimmer assembly from the
pool and/or settle, when liquid is low, into opening 60 or
selectively be placed in holder 68. A retainer ring 70 is provided
in vertically spaced relationship to upper flange 44 in the skimmer
body and coacts with retainer lug 72 to hold the plate in the
installed position as shown in FIG. 1 and to effect a seal
therebetween and the body as will be obvious. An opening 74 is
provided in ring 70 to permit insertion or removal of the plate in
an obvious manner.
A trimmer valve shoe 76 is formed as a partial or segmental
depending flange on the plate adapted to partially or completely
close the skimmer inlet 48 upon rotation of the plate by means of
the hand gears 66 without an operator being required to deeply
immerse his hand into liquid in the skimmer assembly. The shape and
dimensions of the shoe 76 will be more readily apparent from the
showing thereof in FIGS. 3 and 4. The upper surface of the control
and vacuum plate 42 is provided with indicia as indicated at 78
which facilitates rotation of the plate for different phases of
operation in pool servicing and maintenance. The indicia are more
or less self-explanatory and will be more readily understood from
the following descriptive material. The control and vacuum plate is
preferably constructed of an optically clear material to permit
viewing the strainer basket. A vacuum hose connection is
establishable through tapered opening 60 with the trimmer valve
shoe 76 closing skimmer inlet 48 thereby creating a direct circuit
from the aperture through the strainer basket 15 and thence through
pump suction outlet 46. The valve shoe is made a part of the
control and vacuum plate in such a manner that flow from the main
outlet through inlet 48 can be metered or closed off entirely by a
simple rotation of the control and vacuum plate.
The control and vacuum plate can create a seal operating for
sealing off the upper throat section and upon insertion of float
stopper 62 and rotation of plate 42 will open skimmer inlet 48
whereupon all of the flow will be drawn from inlet 48 for brushing
the pool or for lowering the pool water level or for draining the
pool without the necessity or use of extra valves such as in known
installations and all of the water will pass through the basket
40.
The buoyant float stopper 62 during normal operation permits flow
of surface waters traveling over weir block 34 to enter the opening
60, through the strainer basket, through pump suction outlet 46,
and should water level in the pool drop below an effective skimming
level whereby water level in the throat section lowers drastically,
the float stopper will be drawn into the opening 60 creating a
sealed circuit from skimmer inlet 48 through strainer basket to
pump through suction outlet 46. In normal operation, water from the
pool surface is drawn through opening 60 while a lesser amount is
drawn through inlet 48.
The means providing retention of the control and vacuum plate
permits, by retaining ring 70, rotation while preventing the plate
from being dislodged by air bubbles or air buoyancy of the plate
when the pump is not in operation. The stopper holder 68, integral
with the plate, permits insertion of and securement therein of the
float stopper during vacuuming operation or when not in use for any
reason.
It is believed that operation of the present invention will be
obvious from foregoing description to permit the desired functions
of the skimmer assembly in a pool system for the various desired
maintenance and operating phases or operations.
Manifestly changes in details of construction can be effected in
the apparatus as shown and described without departing from the
spirit and scope of the invention as defined in and limited solely
by the appended claims.
* * * * *