CA1285718C - Vane for underliquid cleaning device - Google Patents
Vane for underliquid cleaning deviceInfo
- Publication number
- CA1285718C CA1285718C CA000573368A CA573368A CA1285718C CA 1285718 C CA1285718 C CA 1285718C CA 000573368 A CA000573368 A CA 000573368A CA 573368 A CA573368 A CA 573368A CA 1285718 C CA1285718 C CA 1285718C
- Authority
- CA
- Canada
- Prior art keywords
- vane
- underliquid
- brush
- bracket
- cleaning device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Cleaning In General (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A swimming pool cleaning brush is disclosed having a pivotal vane that uses fluid dynamics for increasing contact pressure of the brush with the surfaces being cleaned during forward motion and then pivots to a nonimpeding position upon backward motion. The vane is designed to enable after market installation and is economically formed from two or threee pieces of flat metal or plastic with necessary fasteners.
A swimming pool cleaning brush is disclosed having a pivotal vane that uses fluid dynamics for increasing contact pressure of the brush with the surfaces being cleaned during forward motion and then pivots to a nonimpeding position upon backward motion. The vane is designed to enable after market installation and is economically formed from two or threee pieces of flat metal or plastic with necessary fasteners.
Description
i~ 8 3 VANR FOR UNDRRLIQUID CLEANING DEVICI.
4 BACKGROUND OF ~IIE INVFNTION-1. Field of the Invention 6 The present invention relQtes to l)ruslles Eor clcaning7 underwater surfaces and particularly to hydrodynQIllic flow vanes for increaslng contact pressure against a surface being cleaned 9 by motion of an abr~sive cleaning device.
4 BACKGROUND OF ~IIE INVFNTION-1. Field of the Invention 6 The present invention relQtes to l)ruslles Eor clcaning7 underwater surfaces and particularly to hydrodynQIllic flow vanes for increaslng contact pressure against a surface being cleaned 9 by motion of an abr~sive cleaning device.
2. Relation to the~Prior Art:
11 In brushing the sides Oe a swimming pool, it is uwkwQrd and 12 dificult to malntain any kind o forceful contact by tlle brusl 13 Qgainst the sides of the pool. This has led to a number of 14 innovative devices to utilize the dynamics of 1iquid flow to `- ` lS provide the deslred contact pressure. The flow vane of Otto, U.S.
16 Patent No. 2249576 was a slmple~ rectan~ular plate pivota11 17 ~ mounted at the ends of the brush. The~spacing between the plate 18 and the back of the brush limi~ted the pivotal movement~of the v~alle so that it provi~ded equQl ~pressure to the brush on both up io and down strokes. ~
21 Shou1dice in U.S. Patent No. 3003166 describes a simi1ar but ; ~22 more complex vane having a more balanced structure with b1ades 23 extending both~ways f~rom ~the pivotal axls. The blade nearer the 24 brush is captured in a housing and its movement is limited by tlle ;25 housing llps. Again ths limi.s are t~e same tor botl ùirections ' 1 .
' :
~`` I l~?S7~3 1 ¦ of motion.
¦ Gibellina in U.S. Patent No. 3402413, disclosa~ a nonpivotal 3 I vane that is shaped to produce greater contact pressure on a 4 ¦ forward stroke than on a reverse stroke.
11 In brushing the sides Oe a swimming pool, it is uwkwQrd and 12 dificult to malntain any kind o forceful contact by tlle brusl 13 Qgainst the sides of the pool. This has led to a number of 14 innovative devices to utilize the dynamics of 1iquid flow to `- ` lS provide the deslred contact pressure. The flow vane of Otto, U.S.
16 Patent No. 2249576 was a slmple~ rectan~ular plate pivota11 17 ~ mounted at the ends of the brush. The~spacing between the plate 18 and the back of the brush limi~ted the pivotal movement~of the v~alle so that it provi~ded equQl ~pressure to the brush on both up io and down strokes. ~
21 Shou1dice in U.S. Patent No. 3003166 describes a simi1ar but ; ~22 more complex vane having a more balanced structure with b1ades 23 extending both~ways f~rom ~the pivotal axls. The blade nearer the 24 brush is captured in a housing and its movement is limited by tlle ;25 housing llps. Again ths limi.s are t~e same tor botl ùirections ' 1 .
' :
~`` I l~?S7~3 1 ¦ of motion.
¦ Gibellina in U.S. Patent No. 3402413, disclosa~ a nonpivotal 3 I vane that is shaped to produce greater contact pressure on a 4 ¦ forward stroke than on a reverse stroke.
5 ¦ Feinberg in U.S. Patent No. 4637087 provides a fixed vane 6 ¦ with a plurality of apertures blocked by check valvcs so as to 7 ¦ reduce the contact pressure on thc return stroke.
a ¦ Both of the latter two patents recogni7,ed the value of 9 ¦ reducing flow impedance on the return stroke. ~oth also provided 10 ¦ devices that were adaptable to after marlcet use. They are readily 11 ¦ attachable to preexlsting bruslles.
12 ¦ The present invention returns to the pivotal ~implicity of 13 ¦ the Otto patent with n device that has lower return strolce 14 ¦ impedance than any of the references and is well adapted to after 15 ¦ market use.
16 ¦ SUMMARY OF TIIE INVENTION.
17 ¦ In accordance with the present invention, an underwater 18¦ abrasive cleaning device is provided with a vane that is 9¦ pivotally mounted on a bracket assembly. The bracket assembly is ; 201 mounted to hold the vane in spaced relation to the back of the ~ll device and carries vane stops assymetrically disposed relative to ~22¦ the pivotal points such that forward motion of the device in a 231 liquld mediùm causes the vane to pivot to a position producing ¦ fluid pressure pushing the device against the surface being 26 cleaned while reverse motion causes the vane to pivot to a : ., ,:
.
~ ;i'7~
1 ¦ nonimpeding position. Moth bracket and vanc mny be .stamped from 2 ¦ sl1eet metal.
4 I T~ s it i9 an ob~ect of the invention to provi(1e a11 S I economical vane for forcing an underwater cleaning t1evice ngainst 6 I a surface to be cleaned during a forward cleaning stroke, while 7 ¦ offering minimum resistnnce during a return stro1ce.
I Furt11er objects and features of the invention will becon1e 9 I ayparent upon readin8 the following description together with the 1 drawing.
ll I BRIEF nESCRIPTION 0~ TIIR DRAWING:
12 ¦ Fig. l is an assembly drawing of ~.he invention in perspec~ive 13 ¦ partinlly cut-away to show detail.
l4¦ Fig. 2 is a front elevation of the vane support bracket of the 15¦ invention.
16¦ Fig. 3 i~ a right side elevation of the bracket of Fig. 2 17¦ Fig. 4 is a bottom plan view of a vane accordi1lg to the invention 18¦ Fig. 5 is a right side elevatlon of~the vane of Fig. 4.
19¦ Fig. 6 is an alternative embodiment of a vane support ~racket shown in perspectlve with the right end cut-away.
21 DES~RIPTION OF TIIE PREFERRED EMBODIMENTS
22 The }nvention is intended for use with any abrasion device 23 for cleaning a surface underneath a liquid. Brushes, scrapers, 24 wlpers and related devices operated manually with a yole-type han(1le are all tncluded. The invention was developed in relation 26 CleaninB the suFfnces of an artificial swimming yool and will . .
' ,`"":'' ,' ' ~
. ' '.' ~ . - .
.
.
l be described in that connection with no llmitin~ intent.
2 Fig. 1 depicts a common type of swimming pool cleflning 3 brush, 10. Brush 10 cleans by means of bristles 12 and is 4 manipulated by pole 11 connected to brush back 14 which holds bristles 12. In accordance with the invention, bracket lS is 6 bolted to back 14 by two bolts 24. While Fig. 2 depicts bolts 24 7 as passin~ throuRh the central portion of back 14, a more 8 convenient connection is usually available. It is common for brushe~ 10 to have web 19 extending from back 14 to a handle portion for receiving pole 11. Bolts 24 can then mount bracket 15 11 to back 14 by passing throu~h apertures drilled in web 19.
12 Bracket 15 is shaped like an inverted "U" with lateral 13 member 18 humped at central portion Z7 to allow for a handle ;14 po~rtion Df back 14. Apertures 28 on either siae Oe central ; 15 portion 27 are bolt holes for bolts 24.
16 Looking at brush 10 in Fig. 1;, bracket; i5 hns two vertical 17 arms. Left arm 16 and right =rm 17~ hav~e apertures 25 and 26 18 respectively near thelr ~upper ends. Apertures 25 and 26 accept pivots 20 and 21 respectively for connecting vane ~22 to bracket 15. Pivots 20 and 21 are suitably pivot pins such as rivets. The 21 upper ends of arms 16 and 17 are finished off with forward motion 22 stops 31 and reverse motion stops 30. ~
23 Vane 22 is substantially rectangular with either rounded or 24 square corners.~The ar=a of vane 22 is ~desirably in the range of 25 50% to 100% of the bristle end surface of brush 10. While any .
. .
'~
`: ~
l amount of vane area aids surface contact, vane area le99 tl1al1 50%
2 of brush area produces noticeably less than optimum aefect and 3 vane area greater than tl1e brush area increases the bullc and 4 wieldability of the brush to an undesire(l extent.
A preferred means of adapting vane 22 for connection to 6 pivots 20 and 21 is depicted in Figs. 4 and 5. Tabs 32 ancl 34 are punched out of vane 22 which i9 suitably a sheet of aluminum.
8 Tabs 32 and 34 have pivot apertures 37 for receiving pivots 20 9 and 21. Punching out of tabs 32 and 34 leaves apertures 35 in vane 22. Tabs 32 and 34 are located behind the lateral axis of ll vane 22 toward the trailing edge of the vane as the brush is 12 pushed forward. The exrct location is not critical, but they have 13 been placed ~ust far enough from the trailing edge to leave 19 enough metal for good structural integrity.
lS Referring to fig.~3, return stops 30 are preferably 16 positioned to kerp vane 22 angled forward at 5 to 15 relative~
17 to pole ll. This provides a bias to ensure that forward motion of 18 the device in a liquid wilI cause vane 22 to rotate further until l9 it strikes stops~31. Stops 31 are positioned to stop vane 22 at : ~ ~ :
a forward angle of 45 relative to pole ll. The an~le of 45 is 21 not critical, but it is the prrferred de~lection angle when pole 22 il is prrallel wlth thr surface being cleaned.
23 The bracket and vane assembly may also be mounted on pole 11 24 instead of brush 1~0. Fig. 6 depicts one style of pole 11 thrt is hollow so thrt end 38 may ~it over a stub pole (not shown) : . .
:~
.
.. . .
l¦ integral with brush lO. Apertures 42 are for capturing detents 011 21 the stub pole. Bracket 15 i~ mounted to pole by cylindrical clamp 31 40 passlng under pole ll and secured to bracket 15 by two bolts 41 41.
sl While tlle invention has been described with respect to 61 specific embodiments, variations within the state of the art are 71 contemplated. The materials used can be various metals and/or 81 plastics and can be stamped, molded, cast or otherwise shaped.
9¦ The vane is preferably rectangular, but can also be oval or other 10¦ de~ired shape.
ll ¦ Thus it is intended to cover the invention as set forth in 12 ¦ the following claims.
~ 131 ~ 141 :
,, 151 ~ ~ 16 ~ 71 ~ ~ ~ 181 ; `20 ~: :
; ~6 6 :
. .
.~,,,.. :
a ¦ Both of the latter two patents recogni7,ed the value of 9 ¦ reducing flow impedance on the return stroke. ~oth also provided 10 ¦ devices that were adaptable to after marlcet use. They are readily 11 ¦ attachable to preexlsting bruslles.
12 ¦ The present invention returns to the pivotal ~implicity of 13 ¦ the Otto patent with n device that has lower return strolce 14 ¦ impedance than any of the references and is well adapted to after 15 ¦ market use.
16 ¦ SUMMARY OF TIIE INVENTION.
17 ¦ In accordance with the present invention, an underwater 18¦ abrasive cleaning device is provided with a vane that is 9¦ pivotally mounted on a bracket assembly. The bracket assembly is ; 201 mounted to hold the vane in spaced relation to the back of the ~ll device and carries vane stops assymetrically disposed relative to ~22¦ the pivotal points such that forward motion of the device in a 231 liquld mediùm causes the vane to pivot to a position producing ¦ fluid pressure pushing the device against the surface being 26 cleaned while reverse motion causes the vane to pivot to a : ., ,:
.
~ ;i'7~
1 ¦ nonimpeding position. Moth bracket and vanc mny be .stamped from 2 ¦ sl1eet metal.
4 I T~ s it i9 an ob~ect of the invention to provi(1e a11 S I economical vane for forcing an underwater cleaning t1evice ngainst 6 I a surface to be cleaned during a forward cleaning stroke, while 7 ¦ offering minimum resistnnce during a return stro1ce.
I Furt11er objects and features of the invention will becon1e 9 I ayparent upon readin8 the following description together with the 1 drawing.
ll I BRIEF nESCRIPTION 0~ TIIR DRAWING:
12 ¦ Fig. l is an assembly drawing of ~.he invention in perspec~ive 13 ¦ partinlly cut-away to show detail.
l4¦ Fig. 2 is a front elevation of the vane support bracket of the 15¦ invention.
16¦ Fig. 3 i~ a right side elevation of the bracket of Fig. 2 17¦ Fig. 4 is a bottom plan view of a vane accordi1lg to the invention 18¦ Fig. 5 is a right side elevatlon of~the vane of Fig. 4.
19¦ Fig. 6 is an alternative embodiment of a vane support ~racket shown in perspectlve with the right end cut-away.
21 DES~RIPTION OF TIIE PREFERRED EMBODIMENTS
22 The }nvention is intended for use with any abrasion device 23 for cleaning a surface underneath a liquid. Brushes, scrapers, 24 wlpers and related devices operated manually with a yole-type han(1le are all tncluded. The invention was developed in relation 26 CleaninB the suFfnces of an artificial swimming yool and will . .
' ,`"":'' ,' ' ~
. ' '.' ~ . - .
.
.
l be described in that connection with no llmitin~ intent.
2 Fig. 1 depicts a common type of swimming pool cleflning 3 brush, 10. Brush 10 cleans by means of bristles 12 and is 4 manipulated by pole 11 connected to brush back 14 which holds bristles 12. In accordance with the invention, bracket lS is 6 bolted to back 14 by two bolts 24. While Fig. 2 depicts bolts 24 7 as passin~ throuRh the central portion of back 14, a more 8 convenient connection is usually available. It is common for brushe~ 10 to have web 19 extending from back 14 to a handle portion for receiving pole 11. Bolts 24 can then mount bracket 15 11 to back 14 by passing throu~h apertures drilled in web 19.
12 Bracket 15 is shaped like an inverted "U" with lateral 13 member 18 humped at central portion Z7 to allow for a handle ;14 po~rtion Df back 14. Apertures 28 on either siae Oe central ; 15 portion 27 are bolt holes for bolts 24.
16 Looking at brush 10 in Fig. 1;, bracket; i5 hns two vertical 17 arms. Left arm 16 and right =rm 17~ hav~e apertures 25 and 26 18 respectively near thelr ~upper ends. Apertures 25 and 26 accept pivots 20 and 21 respectively for connecting vane ~22 to bracket 15. Pivots 20 and 21 are suitably pivot pins such as rivets. The 21 upper ends of arms 16 and 17 are finished off with forward motion 22 stops 31 and reverse motion stops 30. ~
23 Vane 22 is substantially rectangular with either rounded or 24 square corners.~The ar=a of vane 22 is ~desirably in the range of 25 50% to 100% of the bristle end surface of brush 10. While any .
. .
'~
`: ~
l amount of vane area aids surface contact, vane area le99 tl1al1 50%
2 of brush area produces noticeably less than optimum aefect and 3 vane area greater than tl1e brush area increases the bullc and 4 wieldability of the brush to an undesire(l extent.
A preferred means of adapting vane 22 for connection to 6 pivots 20 and 21 is depicted in Figs. 4 and 5. Tabs 32 ancl 34 are punched out of vane 22 which i9 suitably a sheet of aluminum.
8 Tabs 32 and 34 have pivot apertures 37 for receiving pivots 20 9 and 21. Punching out of tabs 32 and 34 leaves apertures 35 in vane 22. Tabs 32 and 34 are located behind the lateral axis of ll vane 22 toward the trailing edge of the vane as the brush is 12 pushed forward. The exrct location is not critical, but they have 13 been placed ~ust far enough from the trailing edge to leave 19 enough metal for good structural integrity.
lS Referring to fig.~3, return stops 30 are preferably 16 positioned to kerp vane 22 angled forward at 5 to 15 relative~
17 to pole ll. This provides a bias to ensure that forward motion of 18 the device in a liquid wilI cause vane 22 to rotate further until l9 it strikes stops~31. Stops 31 are positioned to stop vane 22 at : ~ ~ :
a forward angle of 45 relative to pole ll. The an~le of 45 is 21 not critical, but it is the prrferred de~lection angle when pole 22 il is prrallel wlth thr surface being cleaned.
23 The bracket and vane assembly may also be mounted on pole 11 24 instead of brush 1~0. Fig. 6 depicts one style of pole 11 thrt is hollow so thrt end 38 may ~it over a stub pole (not shown) : . .
:~
.
.. . .
l¦ integral with brush lO. Apertures 42 are for capturing detents 011 21 the stub pole. Bracket 15 i~ mounted to pole by cylindrical clamp 31 40 passlng under pole ll and secured to bracket 15 by two bolts 41 41.
sl While tlle invention has been described with respect to 61 specific embodiments, variations within the state of the art are 71 contemplated. The materials used can be various metals and/or 81 plastics and can be stamped, molded, cast or otherwise shaped.
9¦ The vane is preferably rectangular, but can also be oval or other 10¦ de~ired shape.
ll ¦ Thus it is intended to cover the invention as set forth in 12 ¦ the following claims.
~ 131 ~ 141 :
,, 151 ~ ~ 16 ~ 71 ~ ~ ~ 181 ; `20 ~: :
; ~6 6 :
. .
.~,,,.. :
Claims (12)
1. An underliquid-brush vane assembly comprising:
(a). A bracket assembly securable to an underliquid brush device for holding a vane plate in spaced relation to the back of said brush device;
(b). a vane plate pivotally secured to said bracket assembly at pivot points on said bracket assembly; and, (c). stops on said bracket assembly positioned assymetrically relative to said pivot points and limiting the rotational movement of said plate, whereby forward motion of a brush device, to which said bracket assembly is secured, in a liquid causes said plate to pivot to a position producing fluid pressure aiding contact of said brush with an adjacent surface while reverse motion of said brush causes said plate to pivot to a position of minimum impedance to movement.
(a). A bracket assembly securable to an underliquid brush device for holding a vane plate in spaced relation to the back of said brush device;
(b). a vane plate pivotally secured to said bracket assembly at pivot points on said bracket assembly; and, (c). stops on said bracket assembly positioned assymetrically relative to said pivot points and limiting the rotational movement of said plate, whereby forward motion of a brush device, to which said bracket assembly is secured, in a liquid causes said plate to pivot to a position producing fluid pressure aiding contact of said brush with an adjacent surface while reverse motion of said brush causes said plate to pivot to a position of minimum impedance to movement.
2. An underliquid-brush vane assembly according to claim 1 wherein said bracket assembly comprises a literal member with two arms extending at substantially right angles from opposite ends of said member, each arm having a pivot aperture proximate its outer end, a forward motion stop between said lateral member and said pivot point and a reverse motion stop at the end of the arm.
3. An underliquid-brush vane assembly according to claim 1 wherein said vane plate is stamped from sheet aluminum and two pivot point apertures are provided in tabs that are punched out of the plate at right angles.
4. An underliquid-brush vane assembly according to claim l wherein said bracket assembly includes a clamp member for clamping said bracket device to a pole part of said brush device.
5. An underliquid-brush vane assembly according to claim 1 wherein said stops on said bracket assembly are terminal. edges of said bracket assembly.
6. An underliquid surface cleaning device comprising:
(a) an abrasion element;
(b) a pole secured to said abrasion element for manipulation of the abrasion element against an underliquid surface;
(c) a substantially rectangular vane element;
(d) a bracket secured to said cleaning device and pivotally supporting said vane element in spaced relation to said cleaning device, said bracket having at least two stop surfaces limiting pivotal movement of said vane element such that forward motion of the cleaning device causes the vane element to pivot to a position where the liquid flow urges the abrasion element in contact with the surface to be cleaned while reverse motion of the cleaning device causes the vane element to pivot to a substantially nonimpeding position.
(a) an abrasion element;
(b) a pole secured to said abrasion element for manipulation of the abrasion element against an underliquid surface;
(c) a substantially rectangular vane element;
(d) a bracket secured to said cleaning device and pivotally supporting said vane element in spaced relation to said cleaning device, said bracket having at least two stop surfaces limiting pivotal movement of said vane element such that forward motion of the cleaning device causes the vane element to pivot to a position where the liquid flow urges the abrasion element in contact with the surface to be cleaned while reverse motion of the cleaning device causes the vane element to pivot to a substantially nonimpeding position.
7. An underliquid-surface cleaning device according to claim 6 wherein said at least two stops are two rear stops and two front stops, said rear stops positioned to keep said vane element angled forward at 5° to 15° relative to said pole to ensure that forward motion of the device in a liquid will cause the vane to rotate further forward until it strikes the front stops.
8. An underliquid-surface cleaning device according to claim 7 wherein said vane element is a substantially rectangular element having a lateral axis and has two spaced depending tabs located behind the lateral axis of the vane and connected by pivot pins to said bracket at positions between said front stops and said rear stops.
9. An underliquid-surface cleaning device according to claim 8 wherein said vane element including tabs is stamped from a single piece of flat metal and said bracket including front and rear stops is formed from a single piece of flat metal.
10. An underliquid-surface cleaning device according to claim 6 wherein said bracket is mounted to said pole by a clamp passing under said pole.
11. An underliquid-surface cleaning device according to claim 6 wherein said bracket is mounted to said abrasion element by fasteners.
12. An underliquid-surface cleaning device according to claim 6 wherein said abrasion element is a brush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000573368A CA1285718C (en) | 1988-07-29 | 1988-07-29 | Vane for underliquid cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000573368A CA1285718C (en) | 1988-07-29 | 1988-07-29 | Vane for underliquid cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1285718C true CA1285718C (en) | 1991-07-09 |
Family
ID=4138461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000573368A Expired - Lifetime CA1285718C (en) | 1988-07-29 | 1988-07-29 | Vane for underliquid cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1285718C (en) |
-
1988
- 1988-07-29 CA CA000573368A patent/CA1285718C/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |