EP0315669B1 - Cleaning vehicles - Google Patents
Cleaning vehicles Download PDFInfo
- Publication number
- EP0315669B1 EP0315669B1 EP88904990A EP88904990A EP0315669B1 EP 0315669 B1 EP0315669 B1 EP 0315669B1 EP 88904990 A EP88904990 A EP 88904990A EP 88904990 A EP88904990 A EP 88904990A EP 0315669 B1 EP0315669 B1 EP 0315669B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- brush
- steerable wheels
- matter
- control
- wheels
- 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
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
- E01H1/0827—Dislodging by suction; Mechanical dislodging-cleaning apparatus with independent or dependent exhaust, e.g. dislodging-sweeping machines with independent suction nozzles ; Mechanical loosening devices working under vacuum
- E01H1/0836—Apparatus dislodging all of the dirt by suction ; Suction nozzles
- E01H1/0845—Apparatus dislodging all of the dirt by suction ; Suction nozzles with mechanical loosening or feeding instruments for the dirt to be sucked- up, e.g. brushes, scrapers
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/02—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt
- E01H1/05—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt with driven brushes
- E01H1/053—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt with driven brushes having vertical axes
Definitions
- This invention relates to cleaning vehicles, for example such vehicles as disclosed in International patent application WO-A 8701404, the disclosure of which is hereby incorporated.
- a cleaning vehicle in which the brush gear and the suction gear are both mounted on a support structure which is itself mounted for turning movement relative to the vehicle body.
- the support structure also carries the steerable wheels so that the entire assembly moves in unison.
- the matter inlet means or nozzle is located between the steerable wheels and the brush gear and nozzle and the steerable wheels turn as a single assembly, whereby their relative positions are unchanged during steering movements of the vehicle.
- This strip lies between the inboard edge of the zone swept by the inboard brush, and the outboard edge of the nozzle.
- the problem arises, at least in part, from the fact that the mounting of the brush gear is such that the inboard brush may need to be individually swung outwards about its pivot by the driver to enable the brush to maintain contact with the kerb or other curved edge being swept.
- a cleaning vehicle incorporating a brush gear position control system having position sensing and feedback.
- DE-A-3517079 there is disclosed a cleaning vehicle in which two sweeping brushes and a nozzle are mounted on a frame and form a sub-assembly which is pivoted on the vehicle body in unison with the steered wheels.
- An object of the present invention is to provide a cleaning vehicle offering improvements in relation to one or more of the matters discussed above, or generally.
- the suction nozzle or matter inlet means is pivoted independently of the brush mounting, and both these assemblies are steered in accordance with the steering of the steerable wheels of the vehicle.
- different pivotal relationships as between the nozzle and the steered wheels, and the brush gear and the steered wheels can be achieved.
- These differing relationships enable the avoidance or substantial reduction of unswept areas or "trails" to be achieved.
- the relationship between the angular position of the steered wheels and the positions of the brush or brushes and the nozzle may be non-linear. A different curve may be provided by the nozzle and the or each of the brushes. At any time, the driver can override the aforesaid relationship to provide independent brush control.
- a cleaning vehicle 10 comprises ground wheels including forward steerable wheels 12, 14 and rear driven wheels (not shown) on which is mounted a vehicle body ⁇ also not shown.
- Vehicle 10 further comprises brush gear 16 having brushes 18 and 20, together with suction gear 22 in the form of a suction intake nozzle.
- Steerable wheels 12, 14 are mounted for pivotal movement about respective upwardly extending axes 24, 26 and are interconnected by a steering linkage 28 comprising steering arms 30, 32 interconnected by a steering link 34 and steering joints 36, 38.
- a steering control system is provided to enable an operator of the vehicle to steer it in the conventional way from his cab.
- the steering system for the vehicle described thus far, is very analogous to a conventional Ackermann vehicle steering system.
- each brush 18, 20 is mounted on its respective wheel axle assembly 40, 42 through support arms 44, 46 and brush mounting linkages 48, 50.
- Linkages 48, 50 are constructed substantially as described in the prior International application, to which reference is directed for all detailed information. Suffice it to say for present purposes that each linkage comprises hydraulic rams 52, 54 which, together with a helical tension spring serve to control the linkages by means of a hydraulic system (not shown) including a valve under driver control. The driver can set the lateral position of each brush by causing pivotal movement of the assembly about an inner pivot 56 having an upwardly extending axis.
- the linkage permits rearward yielding movement of its brush (with respect to direction F of vehicle forward motion) by pivotal movement about a forward upwardly extending articulation axis 58 against the action of the helical tension spring.
- suction gear 22 this comprises a suction nozzle 60 constructed in a manner similar to that disclosed in the prior International application and mounted for independent pivotal movement about an upwardly extending axis 62.
- a steering arm 64 is fixed to nozzle 60 so as to be able to steer it about axis 62.
- Steering arm 64 is connected to the steering arm 30 of steerable wheel 12 by a steering link 66 through steering joints 68, 70.
- steering movement of wheels 12, 14 by virtue of steering linkage 28 causes corresponding steering movement, in synchronism with the wheels, of nozzle 60 by virtue of the linkage 72 constituted by link 66, arm 64 and steering joints 68, 70.
- Control means is thus provided to control both the steerable wheels 12, 14 and the pivotal movement of the matter removal means comprising nozzle 60 and brush gear 16.
- the control means comprises the driver's steering control system for the wheels 12, 14, together with the linkage 72 and arms 44, 46 together with the brush mountings 48, 50.
- linkage 72 it can be arranged that the nozzle and brushes pivot relative to the vehicle body with different relationships to the steerable wheels, so that for example, the angular movement of nozzle 60 is greater than that of the brush assemblies, whereby, even on sharp turns, the nozzle at least compensates for the need to individually swing, under driver control, the inboard brush in an outward direction relative to the inboard steered wheel, as the turn is executed.
- brush mountings 48 and 50 are fixed at their inboard ends 100, 102 on the body 104 of vehicle 10.
- the point of attachment may be at any suitable location, and if the vehicle incorporates a resilient suspension, the point of attachment may be on the sprung or unsprung portion of the vehicle. Otherwise, the brush mountings 48 and 50 are substantially identical to those of Fig. 1.
- Nozzle 22 is pivoted about axis 62, as in Fig. 1, but link 66 is not connected to steering arm 30. Instead, link 66 is connected to an operating mechanism (not shown) under the control of a programmable electronic control system indicated at 106.
- Controller 106 forms part of the control means in this embodiment, which corresponds to the mechanical link and mounting system interconnecting the brush gear and nozzle and steered wheels in Fig. 1.
- sensors 108, 110, 112, 114 and 116 are provided on steered wheels 12, 14, and nozzle 22 and brush mountings 48 and 50 respectively. These sensors may be of any suitable form. For example, they may be in the form of potentiometers. The sensors feed signals back to the controller 106 through signal transmitting lines 118.
- the controller is arranged so that actuation of nozzle 22 and brush mountings 48 and 50 is effected in accordance with the degree of angular movement of steered wheels 12, 14 about their respective steering axes.
- the lateral positions of the brush gear and the nozzle are controlled by hydraulic or pneumatic rams.
- the fluid control system for the rams incorporates a solenoid valve or valves.
- the valve control system may be generally on the lines disclosed in EP-A-0087936.
- Alternative systems for actuation and control of the nozzle and brush gear by means of the signals from sensors 108 to 116 may be provided.
- the controller 106 itself provides for a different pivotal relationship between nozzle 22 and steered wheels 12, 14, than there is between brush mountings 48 and 50 and the steered wheels. Controller 106 provides for variation of these angular relationships according to driver choice and/or sensed vehicle operational parameters.
- the one, two or more brushes and the nozzle can each have their own curve when steering angle of the wheels is plotted against the positions of the brushes and nozzle.
- the brushes and nozzle can each have two or more such curves representing different and driver-selectable operational modes. These could be selected by, for example, the mere operation of a switch by the driver.
- the brush gear and nozzle are provided with flexible position control which is adaptable to operational requirements and emergencies while maximising sweeping efficiency and sweeping width while minimising the tendency to produce unswept areas and trails.
- the driver's manual control system for the vehicle includes a manual override control lever for the brush gear whereby he can position the brushes according to instantaneous requirements during vehicle travel. After such manual adjustment, once the brushes have been reset to a desired position, or else have been allowed to automatically reset thereto, the automatic control system takes over and maintains the proper relationship between brushes and nozzle and the vehicle body according to the selected operating programme of controller 106.
- Fig. 3 the general arrangement and mode of operation is substantially as described above in connection with Fig. 2.
- Simplified brush mountings 248 and 250 are provided, these being directly pivoted on the vehicle body at 252 and 254, and actuated by ram assemblies 256 and 258 respectively having angular movement sensors 257, 259.
- Nozzle 260 is pivoted at 262 and actuated by a ram 264 and associated angular movement sensor 265.
- Steered front wheels 266, 268 are controlled by a ram 270 and associated angular movement sensor 271 acting on a steering link 272.
- a control system for the rams 256, 258, 264 and 270 and their sensors is provided as described above in connection with Fig. 2.
- the vehicle is driven by rear wheels 273, 274 by means of an engine and transmission mounted on the vehicle body 276. Operation of this embodiment is substantially as described above in connection with Fig. 2.
- any suitable brush mounting linkage can be adopted according to the differing requirements of the above two embodiments, and otherwise.
- Such linkage can be provided with varying degrees of sophistication of control according to need, as disclosed above.
- only relatively simple control of the brush gear is strictly needed in view of its automatic steering control system arising from its mechanical connection to the vehicle steering system.
- the independent mounting of the brush gear and of the matter inlet means or nozzle permits differential rates of angular movement between the two as they turn with the steerable wheels.
- the brush gear moves exactly in unison with its respective steered wheel, by being mounted on the axle assembly thereof. This is not essential, as the second embodiment shows.
- An independent mounting with a linkage connection or other connection can also be envisaged.
- the mechanical links direct to the steering system of the vehicle in Fig. 1 can be replaced by hydraulic or other connections, as described in relation to Fig. 2. In such a case, it can be readily provided that when steering control of the brush and/or matter inlet is not required, this can be dispensed with.
- the hydraulic or electronic and/or other connection could be arranged to be selectively rendered inoperable.
- a third brush may be required for the vehicle in certain circumstances. Moreover, for certain operating conditions it may be necessary or desirable to control only one brush, or less than all the brushes at any given time.
- the pivotal mounting of the nozzle then becomes the only major structural change included in the embodiment.
- the angular movement sensors are readily fitted to existing vehicle designs and the technology for such sensors is well established.
- the overall controller 106 will in most cases be electronic, with outputs to solenoid type valve control systems, and can incorporate existing brush gear control systems, such as disclosed in EP-A-0087936.
- the embodiment provides a significant step towards total control of the brush and nozzle systems in a sweeping vehicle while requiring only modest changes to existing vehicle designs. Also, loads in the steering system are lower than in certain prior art proposals.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
Description
- This invention relates to cleaning vehicles, for example such vehicles as disclosed in International patent application WO-A 8701404, the disclosure of which is hereby incorporated.
- In the prior application a cleaning vehicle is disclosed in which the brush gear and the suction gear are both mounted on a support structure which is itself mounted for turning movement relative to the vehicle body. The support structure also carries the steerable wheels so that the entire assembly moves in unison. The matter inlet means or nozzle is located between the steerable wheels and the brush gear and nozzle and the steerable wheels turn as a single assembly, whereby their relative positions are unchanged during steering movements of the vehicle. This arrangement has significant advantages over prior proposals, as explained in the prior application. However, we have established that with this arrangement the problem can arise that when sweeping around a short radius corner it can happen that a strip of surface or ground is left unswept. This strip lies between the inboard edge of the zone swept by the inboard brush, and the outboard edge of the nozzle. The problem arises, at least in part, from the fact that the mounting of the brush gear is such that the inboard brush may need to be individually swung outwards about its pivot by the driver to enable the brush to maintain contact with the kerb or other curved edge being swept.
- Further improvements which would be desirable in relation to the structure disclosed in the prior application relate to the steering mechanism itself and the inherently somewhat high loads arising in the steering gear and associated structures.
- In GB-A-2116613 or EP-A-0087936 there is disclosed a cleaning vehicle incorporating a brush gear position control system having position sensing and feedback. In DE-A-3517079 there is disclosed a cleaning vehicle in which two sweeping brushes and a nozzle are mounted on a frame and form a sub-assembly which is pivoted on the vehicle body in unison with the steered wheels.
- These latter prior art proposals suffer from such shortcomings as the aforementioned tendency to leave unswept areas at certain times, together with a limited ability to accommodate certain obstructions to sweeping which are encountered in use, and certain street layouts are found to be difficult. Moreover, the structure disclosed in the latter of these two prior specifications provides insufficient control over the brush gear due to the fact that the latter is not controlled directly, but only through the pivoted sub-frame. A further related factor concerns a tendency for this substantial pivoted sub-frame to be a cause of instability of the steered assembly of the nozzle and brush gear.
- An object of the present invention is to provide a cleaning vehicle offering improvements in relation to one or more of the matters discussed above, or generally.
- According to the invention there is provided a cleaning vehicle as defined in the accompanying claims.
- In a prefered embodiment of the invention the suction nozzle or matter inlet means is pivoted independently of the brush mounting, and both these assemblies are steered in accordance with the steering of the steerable wheels of the vehicle. In this way different pivotal relationships as between the nozzle and the steered wheels, and the brush gear and the steered wheels can be achieved. These differing relationships enable the avoidance or substantial reduction of unswept areas or "trails" to be achieved. The relationship between the angular position of the steered wheels and the positions of the brush or brushes and the nozzle may be non-linear. A different curve may be provided by the nozzle and the or each of the brushes. At any time, the driver can override the aforesaid relationship to provide independent brush control.
- Whereas the arrangement disclosed in the prior International patent application and in DE-A-3517079 causes an alteration of the pivot position or mounting of the brush gear as the nozzle is steered, in the arrangement disclosed below there is more direct control of the brush gear position by direct actuation of the latter, as opposed to indirect actuation through a sub-frame. Thus, whereas the prior proposals steer two brushes and their mountings together with the associated nozzle in unison, the embodiments of the present invention merely steer one or more brushes and the nozzle independently whereby different relationships to the steered wheels can be achieved, such relationships being non-linear if desired and more than one such relationship being selectable, for example, by merely actuating a switch.
- Embodiments of the invention will now be described by way of example with reference to the accompanying drawings in which:
- Fig. 1 shows a plan view of the steerable front wheels and associated brush gear and suction nozzle of a cleaning vehicle;
- Fig. 2 shows a second embodiment forming a modification of that of Fig. 1; and
- Fig. 3 shows a modification of Fig. 2.
- As shown in Fig. 1 a
cleaning vehicle 10 comprises ground wheels including forwardsteerable wheels Vehicle 10 further comprisesbrush gear 16 havingbrushes suction gear 22 in the form of a suction intake nozzle. - Apart from the structures described in detail below, the entire structure and arrangement of
vehicle 10 is as described in detail in the above-mentioned prior International application, to which reference is specifically directed for further information. -
Steerable wheels axes steering linkage 28 comprisingsteering arms steering link 34 andsteering joints - The
brush gear 16 is mounted on the steeredwheels brush wheel axle assembly support arms brush mounting linkages Linkages hydraulic rams inner pivot 56 having an upwardly extending axis. Once the working position has thus been set, it is automatically maintained relative to the steeredwheels articulation axis 58 against the action of the helical tension spring. - It can now be seen that as
steerable wheels steering axes brush gear 16 automatically moves with the wheels, by virtue of being supported onarms linkages axes 56. - Turning now to the
suction gear 22, this comprises asuction nozzle 60 constructed in a manner similar to that disclosed in the prior International application and mounted for independent pivotal movement about an upwardly extendingaxis 62. Asteering arm 64 is fixed tonozzle 60 so as to be able to steer it aboutaxis 62.Steering arm 64 is connected to thesteering arm 30 ofsteerable wheel 12 by asteering link 66 throughsteering joints wheels steering linkage 28 causes corresponding steering movement, in synchronism with the wheels, ofnozzle 60 by virtue of thelinkage 72 constituted bylink 66,arm 64 andsteering joints - Control means is thus provided to control both the
steerable wheels nozzle 60 andbrush gear 16. Thus, the control means comprises the driver's steering control system for thewheels linkage 72 andarms brush mountings - In use, steering movement of
wheels brush gear 16 andnozzle gear 22 automatically to follow the vehicle's steering movements. It is particularly to be noted that thelinkage 72 wherebysuction gear 22 is steered is arranged to ensure that unswept areas between the inboard edge of the area swept by the inboard brush (say 18) and the outboard edge of the area swept bynozzle 60 ace minimised or eliminated. It will be readily appreciated that by suitably constructinglinkage 72 it can be arranged that the nozzle and brushes pivot relative to the vehicle body with different relationships to the steerable wheels, so that for example, the angular movement ofnozzle 60 is greater than that of the brush assemblies, whereby, even on sharp turns, the nozzle at least compensates for the need to individually swing, under driver control, the inboard brush in an outward direction relative to the inboard steered wheel, as the turn is executed. - In the embodiment of Fig. 2, the general structure and arrangement is as described above in connection with Fig. 1. Therefore, attention will be given mainly to the differences from the embodiment of Fig. 1. In Fig. 2, of the parts identified by reference numerals, those corresponding to the parts of Fig. 1 are given the same reference numerals as in Fig. 1.
- In Fig. 2, the principal differences from Fig. 1 will now be described.
- Firstly,
brush mountings inboard ends body 104 ofvehicle 10. The point of attachment may be at any suitable location, and if the vehicle incorporates a resilient suspension, the point of attachment may be on the sprung or unsprung portion of the vehicle. Otherwise, thebrush mountings -
Nozzle 22 is pivoted aboutaxis 62, as in Fig. 1, butlink 66 is not connected tosteering arm 30. Instead,link 66 is connected to an operating mechanism (not shown) under the control of a programmable electronic control system indicated at 106.Controller 106 forms part of the control means in this embodiment, which corresponds to the mechanical link and mounting system interconnecting the brush gear and nozzle and steered wheels in Fig. 1. In this embodiment,sensors wheels nozzle 22 andbrush mountings controller 106 through signal transmitting lines 118. The controller is arranged so that actuation ofnozzle 22 andbrush mountings wheels sensors 108 to 116 may be provided. - In this embodiment, the
controller 106 itself provides for a different pivotal relationship betweennozzle 22 and steeredwheels brush mountings Controller 106 provides for variation of these angular relationships according to driver choice and/or sensed vehicle operational parameters. Thus, the one, two or more brushes and the nozzle can each have their own curve when steering angle of the wheels is plotted against the positions of the brushes and nozzle. Moreover, the brushes and nozzle can each have two or more such curves representing different and driver-selectable operational modes. These could be selected by, for example, the mere operation of a switch by the driver. In this way, the brush gear and nozzle are provided with flexible position control which is adaptable to operational requirements and emergencies while maximising sweeping efficiency and sweeping width while minimising the tendency to produce unswept areas and trails. - The driver's manual control system for the vehicle includes a manual override control lever for the brush gear whereby he can position the brushes according to instantaneous requirements during vehicle travel. After such manual adjustment, once the brushes have been reset to a desired position, or else have been allowed to automatically reset thereto, the automatic control system takes over and maintains the proper relationship between brushes and nozzle and the vehicle body according to the selected operating programme of
controller 106. - In the embodiment of Fig. 3, the general arrangement and mode of operation is substantially as described above in connection with Fig. 2.
Simplified brush mountings ram assemblies angular movement sensors 257, 259.Nozzle 260 is pivoted at 262 and actuated by a ram 264 and associatedangular movement sensor 265. Steeredfront wheels ram 270 and associatedangular movement sensor 271 acting on asteering link 272. A control system for therams rear wheels - It will be appreciated that many modifications can be made in the above embodiments while remaining within the scope of the invention. Thus, for example, the invention is applicable to any suitable steering system for the vehicle which may be required.
- Naturally, any suitable brush mounting linkage can be adopted according to the differing requirements of the above two embodiments, and otherwise. Such linkage can be provided with varying degrees of sophistication of control according to need, as disclosed above. In principle, in the first embodiment above, only relatively simple control of the brush gear is strictly needed in view of its automatic steering control system arising from its mechanical connection to the vehicle steering system.
- In the embodiments, the independent mounting of the brush gear and of the matter inlet means or nozzle permits differential rates of angular movement between the two as they turn with the steerable wheels. In the first embodiment, the brush gear moves exactly in unison with its respective steered wheel, by being mounted on the axle assembly thereof. This is not essential, as the second embodiment shows. An independent mounting with a linkage connection or other connection can also be envisaged. Likewise, the mechanical links direct to the steering system of the vehicle in Fig. 1 can be replaced by hydraulic or other connections, as described in relation to Fig. 2. In such a case, it can be readily provided that when steering control of the brush and/or matter inlet is not required, this can be dispensed with. In other words, the hydraulic or electronic and/or other connection could be arranged to be selectively rendered inoperable.
- A third brush may be required for the vehicle in certain circumstances. Moreover, for certain operating conditions it may be necessary or desirable to control only one brush, or less than all the brushes at any given time.
- Interestingly, the above embodiments, particularly those of Figs. 2 and 3, provide notable advantages over the prior art. By avoiding the use of a pivoted sub-frame carrying the nozzle and brush gear mounted in a unitary mode, and by independently pivoting the nozzle and brush mounting or mountings, flexibility of operation is permitted. This enables better control of brush gear and nozzles. It avoids the uncertainty of the system disclosed in DE-A-3517079, in which the individual brush positions depend entirely on the resultant of the various dynamic forces acting on the brushes during use, including those arising from the centralising return springs. By fixing the brush mounting arms to the vehicle body or chassis, the second embodiment is well adapted to be incorporated into existing sweeper designs with a minimum of structural modification. Indeed, the pivotal mounting of the nozzle then becomes the only major structural change included in the embodiment. The angular movement sensors are readily fitted to existing vehicle designs and the technology for such sensors is well established. The
overall controller 106 will in most cases be electronic, with outputs to solenoid type valve control systems, and can incorporate existing brush gear control systems, such as disclosed in EP-A-0087936. Thus the embodiment provides a significant step towards total control of the brush and nozzle systems in a sweeping vehicle while requiring only modest changes to existing vehicle designs. Also, loads in the steering system are lower than in certain prior art proposals.
Claims (10)
characterised in that
characterised in that:
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB878713251A GB8713251D0 (en) | 1987-06-05 | 1987-06-05 | Cleaning vehicles |
GB8713251 | 1987-06-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0315669A1 EP0315669A1 (en) | 1989-05-17 |
EP0315669B1 true EP0315669B1 (en) | 1991-09-25 |
Family
ID=10618468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88904990A Expired - Lifetime EP0315669B1 (en) | 1987-06-05 | 1988-06-06 | Cleaning vehicles |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0315669B1 (en) |
AU (1) | AU1944888A (en) |
CA (1) | CA1299829C (en) |
DE (1) | DE3865176D1 (en) |
GB (1) | GB8713251D0 (en) |
WO (1) | WO1988009848A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1612335A2 (en) | 2004-06-29 | 2006-01-04 | Schmidt Holding GmbH | Automotive sweeping apparatus |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2244750B (en) * | 1990-06-08 | 1995-03-22 | Schmidt Mfg & Equip | Suction nozzle mounting for a cleaning vehicle |
GB9015529D0 (en) * | 1990-07-14 | 1990-08-29 | Schmidt Mfg & Equip | Cleaning vehicles |
DE4429996A1 (en) * | 1994-08-24 | 1996-02-29 | Kaercher Gmbh & Co Alfred | Street etc. sweeping vehicle with brush and roller |
US7350264B2 (en) | 2003-11-06 | 2008-04-01 | Madvac Inc. | Mobile vacuum sweeper |
DE102005018882A1 (en) * | 2005-04-22 | 2006-11-02 | Hako-Werke Gmbh | Floor cleaning machine |
DE102009014560A1 (en) * | 2009-03-16 | 2010-09-23 | Alfred Kärcher Gmbh & Co. Kg | Replaceable sweeping brush and sweeper with such sweeping brush device |
ES2398030T3 (en) | 2009-03-17 | 2013-03-13 | Alfred Kärcher Gmbh & Co. Kg | Self-propelled sweeper |
CN104831655B (en) * | 2015-04-14 | 2016-08-24 | 江苏大学 | A kind of pure electric road sweeper vehicle-mounted monitoring system |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4490874A (en) * | 1982-02-27 | 1985-01-01 | Schmidt Manufacturing & Equipment (Uk) Ltd. | Brush control means |
DE3517079A1 (en) * | 1985-05-11 | 1986-11-13 | Schörling GmbH & Co Waggonbau, 3000 Hannover | Self-collecting sweeping vehicle |
DE3650469T2 (en) * | 1985-08-31 | 1996-08-14 | Morningfield Ltd | Cleaning vehicles |
-
1987
- 1987-06-05 GB GB878713251A patent/GB8713251D0/en active Pending
-
1988
- 1988-06-06 CA CA000568750A patent/CA1299829C/en not_active Expired - Fee Related
- 1988-06-06 DE DE8888904990T patent/DE3865176D1/en not_active Expired - Fee Related
- 1988-06-06 EP EP88904990A patent/EP0315669B1/en not_active Expired - Lifetime
- 1988-06-06 AU AU19448/88A patent/AU1944888A/en not_active Abandoned
- 1988-06-06 WO PCT/GB1988/000439 patent/WO1988009848A1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
WO A 87/01404 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1612335A2 (en) | 2004-06-29 | 2006-01-04 | Schmidt Holding GmbH | Automotive sweeping apparatus |
DE102004032383B3 (en) * | 2004-06-29 | 2006-03-09 | Schmidt Holding Gmbh | Self-propelled sweeper |
EP1612335A3 (en) * | 2004-06-29 | 2006-04-12 | Schmidt Holding GmbH | Automotive sweeping apparatus |
Also Published As
Publication number | Publication date |
---|---|
DE3865176D1 (en) | 1991-10-31 |
EP0315669A1 (en) | 1989-05-17 |
GB8713251D0 (en) | 1987-07-08 |
WO1988009848A1 (en) | 1988-12-15 |
AU1944888A (en) | 1989-01-04 |
CA1299829C (en) | 1992-05-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5765846A (en) | Curve-leaning vehicle | |
EP0087936B1 (en) | Brush control means | |
US4368554A (en) | Road sweeping apparatus | |
EP0315669B1 (en) | Cleaning vehicles | |
EP0029347A1 (en) | Road sweeping apparatus and method of making a refuse collecting nozzle | |
EP0414749B1 (en) | Multiple axle trailers | |
AU741618B2 (en) | Front axle suspension | |
WO1991019052A1 (en) | Cleaning and other vehicles | |
EP0536174A1 (en) | Control means for cleaning vehicle. | |
GB2244749A (en) | Sound attenuation duct for a cleaning vehicle | |
WO1991019048A1 (en) | Cleaning and other vehicles | |
EP0467269A2 (en) | Cleaning vehicles | |
EP1298042B1 (en) | Middle axle support apparatus for utility vehicles | |
EP0535075B1 (en) | Cleaning and other vehicles | |
GB2244743A (en) | Water recirculation system for a cleaning vehicle | |
GB2126633A (en) | Road sweeping apparatus | |
WO1991019050A1 (en) | Cleaning and other vehicles | |
GB2244745A (en) | Cab mounting for a cleaning vehicle | |
EP0661183B1 (en) | A suspension for a vehicle steered wheel adopting a multiple-rod arrangement | |
US2954089A (en) | Steering and suspension mechanism for driven wheels | |
WO1991019051A2 (en) | Cleaning and other vehicles | |
US11511581B1 (en) | Suspension system | |
GB2244746A (en) | Glazing for the driver's cab of a cleaning vehicle | |
EP0894696B1 (en) | Steering correction mechanism | |
GB2328658A (en) | Steering correction mechanism |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19890111 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): CH DE FR GB IT LI NL |
|
17Q | First examination report despatched |
Effective date: 19900503 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): CH DE FR GB IT LI NL |
|
REF | Corresponds to: |
Ref document number: 3865176 Country of ref document: DE Date of ref document: 19911031 |
|
ET | Fr: translation filed | ||
ITF | It: translation for a ep patent filed |
Owner name: FERRAIOLO S.R.L. |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
NLS | Nl: assignments of ep-patents |
Owner name: SCHMIDT UK LIMITED |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PUE Owner name: MORNINGFIELD LIMITED TRANSFER- SCHMIDT UK LTD. |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19990602 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19990607 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19990610 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 19990614 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19990628 Year of fee payment: 12 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000606 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000630 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000630 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010101 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20000606 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010228 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20010101 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010403 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050606 |