Support assembly
AssigneeDyson Technology Limited
InventorsTom Vallance Hamilton Crawford, Michael Anthony Saunders
Life of this patent
Estimating the term…
Abstract
A support assembly for a surface treating appliance includes a roller having one or more tires, wherein the one or more tires are fused to the roller. The roller can include a polymer such as polypropylene and may also include a glass filled impact modified copolymer such as a 20% glass filed impact modified copolymer. The tires can include a thermoplastic elastomer such as a modified polymer including a mixture of polypropylene and an ethylene propylene diene monomer. The thermoplastic elastomer may have a hardness of from 55 to 95 Duro measured on the A scale, more specifically from 70 to 79 Duro on the A scale or from 80 to 95 Duro on the A scale.
Claims17
A support assembly for a surface treating appliance comprising a roller formed with a plurality of channels on its outer surface, each channel being bounded by channel walls extending outwardly from the outer surface of the roller and each channel wall having a flexible tip, the roller having a plurality of tires, each tire being located in a respective channel wherein the tire is fused to an inner surface of the channel between the flexible tips by overmolding the tire onto the roller.
Dependencies are inferred from the claim text.