Friction driven rotary cleaning apparatus
阅读：581发布：2022-02-22
专利汇可以提供Friction driven rotary cleaning apparatus专利检索，专利查询，专利分析的服务。并且This disclosure depicts a number of embodiments of lightweight, highly maneuverable, friction-driven ground and floor cleaning apparatus for cleaning dirt and debris from patios, sidewalks, industrial floors and the like. Lightweight multi-function housing means are disclosed which serve, inter alia, as an exoskeleton to support for rotation and to protect a cylindrical brush and a pair of drive wheels.，下面是Friction driven rotary cleaning apparatus专利的具体信息内容。
1. An apparatus for cleaning dirt and debris from patios, sidewalks, and the like, comprising: a cylindrical brush having bristles extending from a central shaft; a pair of wheels, one wheel being disposed at each end of said brush, each of said wheels being mounted on a stub axle; a one-piece injection-molded plastic housing means for rotatably supporting both ends of said brush shaft and for supporting said axle means such that said wheels turn on a common wheel axis; transmission means coupling at least one of said wheels and said brush shaft such that wheel rotation causes said brush to rotate; and a handle joined to said housing means such that said handle and said housing means pivot together about said wheel axis; the improvement wherein said housing means includes a longitudinal body portion partially surrounding said brush to protect said brush and shield the useR from flying debris, said body portion having substantial curvature in planes transverse to said brush shaft to provide structural rigidity for said housing means, said housing means having extending from said body portion a pair of integral end walls and substantially parallel therewith and between said end walls a pair of interior walls integral with said body portion, said end walls and said interior walls supporting for rotation both ends of said brush shaft and said stub axles, said interior walls acting to partially shield said wheels and said transmission means from dust and debris thrown by said brush, said interior walls including open-ended slot means for receiving in a snapin fit at least one end of each of said stub axles and both ends of said brush shaft.
2. The apparatus defined by claim 1 wherein said end walls support the other end of each of said stub axles.
3. The apparatus defined by claim 1 wherein said body portion of said housing means has a bottom edge defining a guard for protecting said brush shaft in situations where two-wheel support of the apparatus might be lost.
4. The apparatus defined by claim 3 wherein said one of said wheels, said stub axles for said one wheel, and a spur gear comprising part of said transmission means are molded as a single unit.
5. Sweeping apparatus for cleaning debris from patios, sidewalks, and the like, comprising: a twisted-in-wire cylindrical brush having bristles extending substantially radially from a brush shaft; only two wheels, one disposed at each end of said brush and forwardly of said brush shaft, said wheels each having a hub mounted on a stub axle and a tire of high friction material surrounding said hub; thin-walled, curved cross-section housing means partially surrounding and protecting said brush, said housing means having a portion thereof extending below the elevation of said brush shaft when said apparatus is in an operating attitude to define a bottom edge acting as a guard for protecting said brush shaft in situations where two-wheel support of the apparatus is lost, said housing means including support means for rotatably supporting said brush shaft and means for rotatably supporting said stub axles, said stub axles being supported in alignment on a common wheel axis oriented parallel with and disposed forwardly of said brush shaft; transmission means coupling at least one of said wheels and said brush shaft such that wheel rotation effects an opposite rotation of said brush, said transmission means comprising a first spur gear rigidly carried by the stub axle on said one wheel and a second smaller spur gear affixed to the end of said brush nearest said one wheel, said housing means supporting said first and second gears in mating engagement with said second gear behind said first gear; and a handle connected to said housing means such that said handle and said housing means pivot together about said wheel axis such that elevational adjustment of said handle effects an elevational adjustment in a like direction of said brush and thus an adjustment of the interference between said brush and the surface being cleaned, whereby a user may control the bite of said brush instantaneously and continuously while operating the brush to compensate for variations in the characteristics of the debris being swept and of the surface being cleaned.
6. The apparatus defined by claim 5 wherein said housing means includes a thin-walled, lightweight longitudinal body portion partially surrounding said brush to protect said brush and shield the user from flying debris, said body portion having substantial curvature in planes transverse to said brush shaft to provide structural rigidity for said housing means, said housing means including support means extending from body portion for effecting said support of said stub axles and of said ends of said brush shaft.
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