Portable cleaning apparatus
作者： James Dyson
DOI:
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摘要: Portable cleaning apparatus (10) comprises a body (12) having lower surface (16) and first second support means (18a, 18b) located at or adjacent opposing sides of the (16). Between 18b), has an upwardly extending recess (30) for accommodating stair tread. This provides portable apparatus, e.g. vacuum cleaner, which can be positioned in stable manner on stairs.
lens.org 参考文章(3)
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Quenten H. Rench, Paul S. Fiegel, Mark Pleshek, Herbert W. Meyer, Apparatus for cleaning interior surfaces ,(1992)
Robert D. Knox, Wheeled adapter base for upright vacuum cleaners ,(1981)