Dirt cup assembly with a pre-filter having a plurality of ribs
AssigneePanasonic Corporation of North America
InventorsERIC E. MUHLENKAMP, Joe M. Reynolds, Jeffrey T. Roney
Life of this patent
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Abstract
A floor cleaning apparatus includes a housing having a nozzle assembly and a canister assembly. The nozzle assembly includes a suction inlet. Both a suction generator and a dirt collection assembly are carried on the housing. The dirt collection assembly includes a dirt cup, a shroud concentrically received within the dirt collection chamber defined by the dirt cup and at least one rib projecting from the shroud toward the bottom wall of the dirt cup. The rib is positioned so as to reduce air turbulence in the dirt collection chamber between an airflow guide on the shroud and the bottom wall of the dirt cup.
Claims18
A floor cleaning apparatus, comprising:
- a housing including a nozzle assembly and a canister assembly, said nozzle assembly including a suction inlet;
- a suction generator carried on said housing;
- and
- a dirt collection assembly carried on said housing;
- said dirt collection assembly including:
- (a) a dirt cup having a substantially cylindrical sidewall and a bottom wall defining a primary dirt collection chamber as well as a tangentially directed airstream inlet;
- (b) a shroud concentrically received within said sidewall in said dirt collection chamber, said shroud including an airstream outlet, an air flow guide between said airstream outlet and said bottom wall;
- and
- (c) at least one rib projecting from said shroud toward said bottom wall, said at least one rib being positioned so as to reduce air turbulence in said dirt collection chamber between said air flow guide and said bottom wall.
Dependencies are inferred from the claim text.