CA2227242A1 - Device for removing ice and/or snow from windowscreen wipers - Google Patents
Device for removing ice and/or snow from windowscreen wipers Download PDFInfo
- Publication number
- CA2227242A1 CA2227242A1 CA002227242A CA2227242A CA2227242A1 CA 2227242 A1 CA2227242 A1 CA 2227242A1 CA 002227242 A CA002227242 A CA 002227242A CA 2227242 A CA2227242 A CA 2227242A CA 2227242 A1 CA2227242 A1 CA 2227242A1
- Authority
- CA
- Canada
- Prior art keywords
- pressure chamber
- wiper arm
- piston
- window
- cylinder
- 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.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/0475—Cleaning of wiper blades
- B60S1/0477—Arrangement for deicing or for removing debris from wiper blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
- B60S1/34—Wiper arms; Mountings therefor
- B60S1/3413—Wiper arms; Mountings therefor with means for holding the arm off the glass in an intermediate position between the working position and the fully folded back position
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/0452—Position of the wipers relative to the vehicle
- B60S1/0455—Device for lifting the wipers off the screen in its parking position or at extremes of wipe
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
- Body Structure For Vehicles (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
A device (1) for removing ice and/or snow from windshield wipers, particularly for use on relatively heavy vehicles, of the type designed to lift the windshield wiper arm (20) such that the wiper blade (22) is brought out of contact with the vehicle window (23), and which thereafter causes the windshield wiper arm (20) to return to its original position so that the wiper blade (22) knocks against the window (23) and ice and/or snow is/are thereby caused to loosen from the wiper blade (22). The device (1) comprises a pneumatic cylinder (2) and a movable piston (5) within the cylinder. The cylinder (2) is divided into a high pressure chamber (9) and a low pressure chamber (10). The high pressure chamber (9) may optionally be placed under a higher pressure than the low pressure chamber (10), by means of a compressed air or a vacuum, in order to move the piston (5) in a first direction, causing the wiper arm (20) to lift away from the window (23). In the low pressure chamber (10) there is provided a return spring (12) which is designed to return the piston (5) in a second, opposite direction to allow the wiper arm (20) to move toward the window (23) when the pressure difference between the high pressure chamber (9) and the low pressure chamber (10) is annulled. The device (1) is adapted to be positioned such that it is operative between the vehicle body (21) or window (23) and the wiper arm (20).
Description
W097/03867 PCT~096/00188 DEVICE FOR REMOVING ICE AND/OR SNOW
FROM WINDOWSCREEN WIPERS
The present invention relates to a device for removing ice and/or snow from wintlehielcl S wipers, particularly for use on relatively heavy vehicles, in accordance with the preamble of claim l.
A number of devices of this type are known. Among these are the one described in US
FROM WINDOWSCREEN WIPERS
The present invention relates to a device for removing ice and/or snow from wintlehielcl S wipers, particularly for use on relatively heavy vehicles, in accordance with the preamble of claim l.
A number of devices of this type are known. Among these are the one described in US
2,784,438. Here, there is shown a device which raises the winllehielcl wiper up from the 10 window, in order thereafter to release the wiper so that snow and/or ice is knocked off the wiper blade. The lifting of the wi . .flsl ~ ield wiper arm is brought about by means of a solenoid mounted on th~e arm and o~.dli~,e b~ a r~ ..;..g means for the solenoidand a bracket on the wiper arm. As is known, the solenoid is electrically po~ l This implies that it must be well sealed in order to prevent moisture and/or dust from 15 pel~ dlillg into the meçh~niem and ;Illl-Ail ;1)~ its function as, for eY~mple, in the case of a short circuit.
Further, a special bracket must be c~eei~npd for the windshield wiper arm; this neceSsit~tre the repl~r.oment of the windshield wiper arm in cases where the solenoid is 20 to be mounted after delivery on a vehicle which has not been equipped with such a device from the factory. For this reason the device also becomes very c;Al~c~ e for post-delivery in~t~ tion-US 4,309,789 also shows an d~Jaldlus that utilizes co...~lessed air to remove ice and/or 25 snow from the windshield wiper blade. Here, co..-~-essed air is supplied to an internal duct running along the length of the windshield wiper blade, which causes the windshield wiper blade to inflate, almost like a balloon, and the snow and/or ice will thereby be loosened. In this case, however, there will be need for a very special win-l~hielcl wiper blade, which would be ~ A~ll~iV~ to replace.
The wiper blade will also be quite vulnerable to ~m~ge, since merely a single crack ~ e~ctt-n-iing from the surface of the blade into the duct will puncture the duct and impair the snow and ice removing ~lnrtiorl Con~ prin~ how frequently it is nece~to change a common windshield wiper blade, this device would have to be very 35 ullcconolllical for use over a long period oftime.
With the present invention, we seek to provide a device that is simple to mount after the vehicle has left the factory, is not dependent on electric or electronic co...polle.l~
W O 97/03867 PCTA~096/00188 disposed on the outside of the vehicle, and is reasonable to procure and reliable to operate. This is achieved by the features disclosed in the ~hs..",;~.;,;,,g clause ofthe following claim 1.
S Further embo~1im~ntc are disclosed in the subse4u~lll dependent claims.
The invention will now be described in more detail with lef.,~cnce to the accolllpdllyillg ~awill~s, where Figure 1 is a side view of the device, from a first direction, Figure 2 is a side view of the device, from a direction perpendicular to t_e first direction, Figure 3 is a top view of the device, Figure 4 is a cross-sectional view of the device, and Figure 5 is a view of the device mounted in conjunction with a windshield wiper arm.
The device 1 is shown in Figures 1 and 5 mounted in co",.~cli~ n with a windshield wiper arm 20, w_ich is illu il~dl~ in cross section in Figure 1. The device conci ctc of a housing 2 and a foot 3. Projecting from an o~ .fillg 4 at the top of hol~cing 2 is a piston S (see Figure 4). Fastened to the top of piston S by means of a screw 6 is a lifting hook 7. The lifting hook 7 is provided at its o-lt~rmost end with a lifting member 8.
Inside housing 2 on one of the sides of piston 5 is formed a high ~les~ , chamber 9, and on the other side of piston 5 is formed a low plC~UlC chamber 10. High pl~
~ h~mh~r 9 is supplied with co.l.p.essed air via a cO--l~ ~,ssed air duct 11. In low ~JlC~ ;; chamber 10 is position~cl a return spring 12, which urges piston 5 into housing 2 when the col.lp.cssed air in high ~ h~mher 9 is l~ ce.l An O-ring seal 13 ensures that dust and moisture do not penetrate into housing 2.
As illustrated in Figure 5, the device 1 may be placed with foot 3 against the body 21 of a vehicle. Device 1 is arranged such that li~ng member 8 is c~ te<l llnc1Prn~th a section of windshield wiper arm 20. ~lt~rn~tively, the entire device, if space permits, may be placed b~Lwccll the vehicle body 21 and the win~lchiel<l wiper arm 20. Then the WO 97103867 PCI~/N096/0018 screw 6, or optionally a suitable striking member mounted thereon, will form the thrust surface against the wiper arm 20.
The cu~ ed air duct 11 may be co....~ cl in a practical manner via a suitable valve - S (not shown) to a colllpre~ed air system already eXiCtin~ in the vehicle. The valve may be, for PY~mple, electrically ~ Lcd and may be .Cit~-~t~1 inside the driver's cabin.
When lumps of ice or clurnps of snow begin to form on the w;~ h;clcl wiper blade 22, the vehicle driver may operate a switch, pl~.ably several times in ~Iccec~i~ n, and thereby send a plurality of colll~l.,.,.,ed air pulses to the high ~ UICi ch~mh~r 9. The piston will thereby be thrust out of the housing with great force, and will thus lift the wiper arm 20, thereby bringing wiper blade 22 out of contact with the window pane 23.
The return spring 12 will ensure that the piston 5 is returned to its original position in housing 2 when the pl~SS:~ul~, in high pl~.7UI~ ~h~rn~,r 9 has dlu~ ed sl~ffisi~ntly. A
plurality of ~ec~ ; v~; oper~tioll~ of the valve will cause piston 5 to be lifted and returned to its original position several times in s~lcce~ion, and ice and snow will thereby be knocked offthe windshield wiper blade 22 in a very effective mZ~nn~.r~ as the blade repeatedly strikes against the window pane 23.
In vehicles without an internal compressed air system, a small co-..~ ssor must be 20 mounted after delivery for the operation of the ice/snow removal device. Optionally the device may also be de~ign~d for ~ hl.lc.,l to a vacuum, e.g., the vehicle's vacuum brake booster. In that case, the v~.;uum will have effect on the low p.~ , chamber 10, while the high lnc.,~ ch~rnhPr 10 l~,.llains below ~trn(l~rh~ri~
25 Piston 5 may also be ~ ignP$1 with adjustable length to adapt to various spacing relationships between the vehicle body and the wiper arm. The device may also beadhered securely to the vehicle w~w pane and thereby be c ~ live between the window pane and the wiper arm, or it may be;, .f. ,~1 ~t~ cl into the vehicle body with factory in~t~ tio~ The device co.ll~ol~-ll~ could basically be made of plastic, e.g., 30 POM.
Further, a special bracket must be c~eei~npd for the windshield wiper arm; this neceSsit~tre the repl~r.oment of the windshield wiper arm in cases where the solenoid is 20 to be mounted after delivery on a vehicle which has not been equipped with such a device from the factory. For this reason the device also becomes very c;Al~c~ e for post-delivery in~t~ tion-US 4,309,789 also shows an d~Jaldlus that utilizes co...~lessed air to remove ice and/or 25 snow from the windshield wiper blade. Here, co..-~-essed air is supplied to an internal duct running along the length of the windshield wiper blade, which causes the windshield wiper blade to inflate, almost like a balloon, and the snow and/or ice will thereby be loosened. In this case, however, there will be need for a very special win-l~hielcl wiper blade, which would be ~ A~ll~iV~ to replace.
The wiper blade will also be quite vulnerable to ~m~ge, since merely a single crack ~ e~ctt-n-iing from the surface of the blade into the duct will puncture the duct and impair the snow and ice removing ~lnrtiorl Con~ prin~ how frequently it is nece~to change a common windshield wiper blade, this device would have to be very 35 ullcconolllical for use over a long period oftime.
With the present invention, we seek to provide a device that is simple to mount after the vehicle has left the factory, is not dependent on electric or electronic co...polle.l~
W O 97/03867 PCTA~096/00188 disposed on the outside of the vehicle, and is reasonable to procure and reliable to operate. This is achieved by the features disclosed in the ~hs..",;~.;,;,,g clause ofthe following claim 1.
S Further embo~1im~ntc are disclosed in the subse4u~lll dependent claims.
The invention will now be described in more detail with lef.,~cnce to the accolllpdllyillg ~awill~s, where Figure 1 is a side view of the device, from a first direction, Figure 2 is a side view of the device, from a direction perpendicular to t_e first direction, Figure 3 is a top view of the device, Figure 4 is a cross-sectional view of the device, and Figure 5 is a view of the device mounted in conjunction with a windshield wiper arm.
The device 1 is shown in Figures 1 and 5 mounted in co",.~cli~ n with a windshield wiper arm 20, w_ich is illu il~dl~ in cross section in Figure 1. The device conci ctc of a housing 2 and a foot 3. Projecting from an o~ .fillg 4 at the top of hol~cing 2 is a piston S (see Figure 4). Fastened to the top of piston S by means of a screw 6 is a lifting hook 7. The lifting hook 7 is provided at its o-lt~rmost end with a lifting member 8.
Inside housing 2 on one of the sides of piston 5 is formed a high ~les~ , chamber 9, and on the other side of piston 5 is formed a low plC~UlC chamber 10. High pl~
~ h~mh~r 9 is supplied with co.l.p.essed air via a cO--l~ ~,ssed air duct 11. In low ~JlC~ ;; chamber 10 is position~cl a return spring 12, which urges piston 5 into housing 2 when the col.lp.cssed air in high ~ h~mher 9 is l~ ce.l An O-ring seal 13 ensures that dust and moisture do not penetrate into housing 2.
As illustrated in Figure 5, the device 1 may be placed with foot 3 against the body 21 of a vehicle. Device 1 is arranged such that li~ng member 8 is c~ te<l llnc1Prn~th a section of windshield wiper arm 20. ~lt~rn~tively, the entire device, if space permits, may be placed b~Lwccll the vehicle body 21 and the win~lchiel<l wiper arm 20. Then the WO 97103867 PCI~/N096/0018 screw 6, or optionally a suitable striking member mounted thereon, will form the thrust surface against the wiper arm 20.
The cu~ ed air duct 11 may be co....~ cl in a practical manner via a suitable valve - S (not shown) to a colllpre~ed air system already eXiCtin~ in the vehicle. The valve may be, for PY~mple, electrically ~ Lcd and may be .Cit~-~t~1 inside the driver's cabin.
When lumps of ice or clurnps of snow begin to form on the w;~ h;clcl wiper blade 22, the vehicle driver may operate a switch, pl~.ably several times in ~Iccec~i~ n, and thereby send a plurality of colll~l.,.,.,ed air pulses to the high ~ UICi ch~mh~r 9. The piston will thereby be thrust out of the housing with great force, and will thus lift the wiper arm 20, thereby bringing wiper blade 22 out of contact with the window pane 23.
The return spring 12 will ensure that the piston 5 is returned to its original position in housing 2 when the pl~SS:~ul~, in high pl~.7UI~ ~h~rn~,r 9 has dlu~ ed sl~ffisi~ntly. A
plurality of ~ec~ ; v~; oper~tioll~ of the valve will cause piston 5 to be lifted and returned to its original position several times in s~lcce~ion, and ice and snow will thereby be knocked offthe windshield wiper blade 22 in a very effective mZ~nn~.r~ as the blade repeatedly strikes against the window pane 23.
In vehicles without an internal compressed air system, a small co-..~ ssor must be 20 mounted after delivery for the operation of the ice/snow removal device. Optionally the device may also be de~ign~d for ~ hl.lc.,l to a vacuum, e.g., the vehicle's vacuum brake booster. In that case, the v~.;uum will have effect on the low p.~ , chamber 10, while the high lnc.,~ ch~rnhPr 10 l~,.llains below ~trn(l~rh~ri~
25 Piston 5 may also be ~ ignP$1 with adjustable length to adapt to various spacing relationships between the vehicle body and the wiper arm. The device may also beadhered securely to the vehicle w~w pane and thereby be c ~ live between the window pane and the wiper arm, or it may be;, .f. ,~1 ~t~ cl into the vehicle body with factory in~t~ tio~ The device co.ll~ol~-ll~ could basically be made of plastic, e.g., 30 POM.
Claims
N e w P a t e n t C l a i m s A device (1) for removing ice and/or snow from windshield wipers, particularly for use on relatively heavy vehicles, of the type designed to lift the windshield wiper arm (20) such that the wiper blade (22) is brought out of contact with the vehicle window (23) and which thereafter causes the windshield wiper arm (20) to return to its original position so that the wiper blade (22) knocks against the window (23) and ice and/or snow is/are thereby caused to loosen from the wiper blade (22), comprising a pneumatic cylinder (2) and a movable piston (5) within the cylinder (2), c h a r a c t e r i z e d in that the cylinder (2) is divided into a high pressure chamber (9), for coupling to a compressed air source, defined by the side walls of the cylinder (2), by one end wall of the cylinder (2) and by the end face of the piston (5), and a low pressure chamber (10) defined by the side walls of the cylinder (2), by the other end wall of the cylinder (2), by the annular face of the piston (5) and by the piston rod, which high pressure chamber (9) may optionally be placed under a higher pressure than the low pressure chamber (10) in order to move the piston (5) in a first direction, causing the wiper arm (20) to lift away from the window (23), and in which low pressure chamber (10) there is provided a return spring (12) designed to return the piston (5) in a second, opposite direction to allow the wiper arm (20) to move toward the window (23) when the pressure difference between the high pressure chamber (9) and the low pressure chamber (10) is annulled, that the device (1) is adapted to be positioned operative between the vehicle body (21) or window (23) and the wiper arm (20), and that the device (1) can be fitted to the vehicle without performing any alterations neither to the wiper arm (20) nor the vehicle body or window.
A device according to claim 1, c h a r a c t e r i z e d in that a lifting hook (7) is connected to the top of the piston (5), which lifting hook (7) is adapted to grasp beneath the wiper arm (20), and that the axial distance between the bottom of the device ( 1 ) and the contact surface of the lifting hook (7) against the wiper arm (20) is less than the height of the device (1).
3.
A device according to any one of the preceding claims, c h a r a c t e r i z e d in that the operative area for the device is adjustable, due to the fact that, e.g., the height of the piston (5) and/or the lifting hook (7) is adjustable.
A device according to claim 1, c h a r a c t e r i z e d in that a lifting hook (7) is connected to the top of the piston (5), which lifting hook (7) is adapted to grasp beneath the wiper arm (20), and that the axial distance between the bottom of the device ( 1 ) and the contact surface of the lifting hook (7) against the wiper arm (20) is less than the height of the device (1).
3.
A device according to any one of the preceding claims, c h a r a c t e r i z e d in that the operative area for the device is adjustable, due to the fact that, e.g., the height of the piston (5) and/or the lifting hook (7) is adjustable.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO952875A NO952875L (en) | 1995-07-19 | 1995-07-19 | Pneumatic ice remover for wipers |
| NO952875 | 1995-07-19 | ||
| PCT/NO1996/000188 WO1997003867A1 (en) | 1995-07-19 | 1996-07-19 | Device for removing ice and/or snow from windowscreen wipers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2227242A1 true CA2227242A1 (en) | 1997-02-06 |
Family
ID=19898416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002227242A Abandoned CA2227242A1 (en) | 1995-07-19 | 1996-07-19 | Device for removing ice and/or snow from windowscreen wipers |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0837798A1 (en) |
| JP (1) | JPH11509497A (en) |
| AU (1) | AU6634196A (en) |
| CA (1) | CA2227242A1 (en) |
| NO (1) | NO952875L (en) |
| WO (1) | WO1997003867A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104691502A (en) * | 2014-07-14 | 2015-06-10 | 昆山昱国机械设备有限公司 | Automatic jack-up device of windshield wiper |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2717408A (en) * | 1954-08-30 | 1955-09-13 | Page Alfred P Le | Windshield blade de-icer |
| US2784438A (en) * | 1954-09-08 | 1957-03-12 | Lee B Petersen | Windshield wiper arm operating mechanism |
| US4309789A (en) * | 1980-09-11 | 1982-01-12 | Ziner Erwin N | Self-deicing windshield wiper |
| FR2604405B1 (en) * | 1986-09-29 | 1990-05-11 | Delluc Rene | DEVICE FOR AUTOMATIC WASHING AND DEFROSTING OF WINDSCREENS OF MOTOR VEHICLES |
| DE4202965C1 (en) * | 1992-02-01 | 1993-01-28 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | Windscreen wiper blade for vehicle - is lifted off screen in park position by lifting arm carried clear of area swept by blade |
| FR2724351B1 (en) * | 1994-09-14 | 1997-04-11 | Peugeot | REDUCED WEAR WIPER BLADE ASSEMBLY IN A STOPPED POSITION FOR A MOTOR VEHICLE |
| US5487204A (en) * | 1994-11-28 | 1996-01-30 | Nelson; Steven M. | Windshield wiper with deicer |
-
1995
- 1995-07-19 NO NO952875A patent/NO952875L/en unknown
-
1996
- 1996-07-19 WO PCT/NO1996/000188 patent/WO1997003867A1/en not_active Application Discontinuation
- 1996-07-19 EP EP96926038A patent/EP0837798A1/en not_active Withdrawn
- 1996-07-19 AU AU66341/96A patent/AU6634196A/en not_active Abandoned
- 1996-07-19 CA CA002227242A patent/CA2227242A1/en not_active Abandoned
- 1996-07-19 JP JP9506581A patent/JPH11509497A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| NO952875D0 (en) | 1995-07-19 |
| AU6634196A (en) | 1997-02-18 |
| WO1997003867A1 (en) | 1997-02-06 |
| NO952875L (en) | 1997-01-20 |
| EP0837798A1 (en) | 1998-04-29 |
| JPH11509497A (en) | 1999-08-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued | ||
| FZDE | Discontinued |
Effective date: 20020719 |