| Patents for E01H 1 - Removing undesirable matter from roads or like surfaces, with or without moistening of the surface (8,945) |
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| 10/23/1991 | CN2087212U Pavement cleaning machine |
| 10/22/1991 | US5058235 Mobile vacuum trash collector |
| 10/16/1991 | CN2086762U Cleaning handcart |
| 10/15/1991 | US5056842 Manual collection apparatus |
| 10/08/1991 | US5054828 Dog feces disposal implement kit |
| 10/08/1991 | US5054152 Mechanical street sweeper |
| 10/08/1991 | US5054150 Forklift mounted sweeping machine |
| 10/02/1991 | EP0449542A2 Waste collection |
| 10/02/1991 | DE4009581A1 Fine granular surface for tennis court - is prepared by machine with front and rear travel rollers with milling head and sweeping rollers between them |
| 10/02/1991 | DE4008295A1 Dog excrement removal device - incorporates tongs with trapezoidal wire jaws |
| 10/01/1991 | US5052073 Backpack-type power working machine |
| 09/25/1991 | EP0447601A1 Apparatus for cleaning road markings |
| 09/25/1991 | EP0315669B1 Cleaning vehicles |
| 09/25/1991 | CN2085377U Full closing sweeping vehicle |
| 09/25/1991 | CN2085376U Handcart for sweeping |
| 09/24/1991 | US5050265 Swivel bowl wear insert for debris intake apparatus |
| 09/17/1991 | US5048141 Floor-cleaning machine with improved brush pressure control |
| 09/17/1991 | CA1288909C Street sweeper machine for trash collecting |
| 09/16/1991 | CA2034923A1 Power broom assembly |
| 09/12/1991 | DE4007051A1 Picking up dog excrement - involves scissors arms with gripping parts and device for bagging it inconspicuously |
| 08/29/1991 | DE4102953A1 Loosening dirt from carriageway surface - involves machine with scraper head with attached scrapers fixed on end of transverse rod |
| 08/28/1991 | EP0443882A1 Improvements relating to collection devices |
| 08/28/1991 | CN2083594U Pneumatic road surface cleaning vehicle |
| 08/22/1991 | DE4101489A1 Cleaning machine for surface cleaning appliances - has swivel mounted tool holders to adapt to surface contours |
| 08/20/1991 | US5040615 Quick attaching power-take-off conversion unit |
| 08/14/1991 | CN2082732U Sucking utensil |
| 08/13/1991 | US5039149 Animal feces gathering and disposal apparatus |
| 08/13/1991 | US5039148 Disposable, foldable scoop for dog waste |
| 08/13/1991 | US5038484 Apparatus for determining an area coverage rate |
| 08/13/1991 | CA1287456C Debris pan for rotary brush sweeper |
| 08/08/1991 | DE4011018C1 Scoop for dog excrement - consists of glove which can be turned inside-out by peeling off user's hand |
| 08/08/1991 | DE4002748A1 Street cleaning vehicle - has container for sweepings with cleaning equipment housed in compartment in container door |
| 08/08/1991 | DE4002177A1 Machine for forming sloping shoulder on road - consists of endless chain with attached cutting tools and earth storage hopper |
| 08/07/1991 | EP0440114A2 Apparatus for hitching a road cleaning or ground cultivating implement to a vehicle |
| 08/06/1991 | US5037149 Dog litter cleanup bag |
| 07/31/1991 | CN2081852U Pedal street sweeper |
| 07/25/1991 | WO1991010780A1 Multiple-use vehicle for cleaning ground surfaces |
| 07/25/1991 | DE4001088A1 Road sweeping and cleaning vehicle - has sleeves rotatable on height-adjustable bearing posts allowing horizontal pivoting of working appts. |
| 07/24/1991 | CN2081399U Multi-functional cleaning unit |
| 07/23/1991 | US5033781 Scoop for removing animal droppings from the ground |
| 07/23/1991 | US5033780 Disposable container for solid animal wastes |
| 07/16/1991 | US5032775 Control apparatus for plane working robot |
| 07/16/1991 | US5031277 Debris collecting and bagging apparatus |
| 07/10/1991 | EP0436273A1 Sweeping Vehicle |
| 07/05/1991 | CA2017106A1 Container dumping system |
| 07/03/1991 | EP0435414A1 Vehicle engine mounting system |
| 07/02/1991 | US5028004 Nozzle head |
| 07/02/1991 | US5027464 Sweeper vehicle |
| 06/18/1991 | CA1284856C Street sweeper main broom assembly |
| 06/12/1991 | CN1012831B Cleaning vehicle for cleaning ground surfaces provided with rigid surface |
| 05/29/1991 | EP0429008A1 Orientable Tool Support |
| 05/29/1991 | EP0428911A1 Cleaning machine |
| 05/28/1991 | US5018587 Tow vehicle |
| 05/28/1991 | CA1284408C High speed pick-up head |
| 05/16/1991 | DE3937210A1 Road sweeping trailer with at least two coaxial wheels - has wheels braked by rod and lever mechanism actuated by compression of pivotable telescopic trailer coupling |
| 05/15/1991 | CN2076992U Dual-purpose machine for snow-sweeping and dust abatedment |
| 05/14/1991 | US5015300 Method and apparatus for adjusting a preselected sweeping surface width of a revolving roll-type brush |
| 05/08/1991 | EP0426094A1 Cleaning machine |
| 05/08/1991 | DE3937108A1 Tending sand and artificial grass surfaces - involves single axle trailer with brushes equipped with stiff bristles moving in plane of surface |
| 05/07/1991 | US5013333 Such as vacuum cleaners and rotary broom sweepers |
| 04/30/1991 | CA1283548C Leaf loading method |
| 04/24/1991 | EP0424229A1 Machine and method using the machine for cleaning a surface |
| 04/24/1991 | CN2075673U Dust suction sweeping machine |
| 04/18/1991 | WO1991004691A1 Brush roller for a street sweeper |
| 04/11/1991 | DE3933341A1 Bag for removing dog excrement - has mouth of bag fitted with wire frame, to stiffen it and hold it open |
| 04/09/1991 | US5005597 Street cleaning device for collecting leaves and debris |
| 04/09/1991 | US5005253 Surface cleaning apparatus |
| 04/04/1991 | WO1991003954A1 Latrine - and waste bag |
| 04/02/1991 | US5004283 Rotary weed extractor |
| 04/02/1991 | US5004156 Washing device mounted on a motor vehicle and comprising a rotary washing arm which delivers jets of pressurized hot water for cleaning various surfaces |
| 03/27/1991 | EP0418428A1 Mobile frame on rails with dust aspiration device |
| 03/26/1991 | US5002595 Debris and water vacuum system |
| 03/21/1991 | DE3937053C1 Flat rotary brush head - has bristles made up of bundles of flat-section wires |
| 03/21/1991 | DE3930123A1 Gardening machine for use on lawns - has mobile chassis housing electric motor and interchangeable tool shafts which are belt-driven |
| 03/20/1991 | CN2073438U Dust exhaust device being able to creep and driven by internal combustion engine |
| 03/19/1991 | US5000500 Disposable plastic bags |
| 03/14/1991 | DE3928914A1 Snow clearer with plough and sweeper - has row of height-adjustable flat ended rotating brushes with vertical axes over entire vehicle width |
| 03/13/1991 | EP0416214A1 Suction apparatus with suction box and waste collection container |
| 03/13/1991 | CN2072991U Manpower cleaning cart |
| 02/28/1991 | DE3928355A1 Hygienic plastics glove for removing dog excrement - has pocket into which dirt is put and carried to nearest paper basket |
| 02/27/1991 | EP0413905A1 Moving and sweeping device |
| 02/27/1991 | CN1011760B Separation type dust-collecting method and device |
| 02/26/1991 | US4995661 Animal feces retriever |
| 02/26/1991 | US4995138 With a motor vehicle |
| 02/21/1991 | WO1991002121A1 Road-sweeping lorry |
| 02/21/1991 | WO1991001949A1 A method of degradation of excrement |
| 02/19/1991 | US4993107 Filtering and collecting device of solid and powder refuse for industrial and civil suction apparatus |
| 02/15/1991 | CA2023052A1 Rotary broom assembly |
| 02/14/1991 | DE4025149A1 Soil cultivating, harvesting street cleaning, grading - involves equipment with compensating devices for maintaining working depth over working width |
| 01/31/1991 | DE3924646A1 Kehrfahrzeug Sweeper |
| 01/24/1991 | DE4019550A1 Hand operated cleaning machine - has brush on vertical axis, two rear steering wheels, at least one supporting wheel and gives more efficient cleaning |
| 01/22/1991 | US4986587 Refuse collecting device |
| 01/16/1991 | CN2069433U Multi-stage cylinder-broom hoisting type cleaning lorry |
| 01/09/1991 | CN2068976U Cleaning vehicle with water-tank |
| 01/02/1991 | EP0406059A1 Container with tearable cover intended for hygienically removing animal excrements |
| 12/25/1990 | US4979260 Hand-guided sweeping machine |
| 12/19/1990 | EP0402764A2 Control apparatus for plane working robot |
| 12/06/1990 | DE3918199A1 Washing device for street signs - has adjustable pairs of brushes and sensors |
| 12/05/1990 | EP0400758A2 Airport runway cleaning method |
| 12/04/1990 | US4974893 Waste recovery and disposal kits |