Sung Whan Cho

US Patent:

7624474, Dec 1, 2009

Filed:

Nov 14, 2008

Appl. No.:

12/271397

Inventors:

Sung K. Cho - Arlington TX, US

Assignee:

Tacony Corporation - Fenton MO

International Classification:

A47L 7/00

US Classification:

15320, 153272, 15347

Abstract:

A portable extractor apparatus is shown which includes a wheel mounted base having a solution tank for dispensing and recovering cleaning solution. A cleaning head communicates with the solution tank and contacts the surface to the cleaned for dispensing and recovering cleaning solution. A fluid pump circulates cleaning solution in a path between the solution tank and the cleaning head. A vacuum motor provides a vacuum source for the cleaning head for suctioning the surface being cleaned. The solution tank has mounted thereon both an initial multi-component filter assembly which initially filters incoming solution being circulated to the solution tank and a distinct final filter component which removes smaller particles from the solution being re-circulated from the tank. The solution tank bottom wall has a profile which improves the efficiency of the final filter component.

US Patent:

20060248677, Nov 9, 2006

Filed:

May 4, 2005

Appl. No.:

11/121548

Inventors:

Sung Cho - Arlington TX, US

International Classification:

A47L 11/30

US Classification:

015321000

Abstract:

A cleaning tool head for use with the wand of a carpet extractor. The head includes a housing that engages a surface being cleaned and forms an enclosed interior. A partition divides the interior into a vacuum chamber located a front sidewall of the housing and a cleaning chamber located behind the vacuum chamber. The cleaning head is mounted on a pair of transport wheels which extend along a wheel axis and is further supported by an upwardly extending handle assembly. The cleaning head is pivotable in an arcuate path about the wheel axis through movement of the handle assembly between a cleaning position in which the housing lower edge engages the surface to be cleaned as the handle assembly is pulled by a user and a transport position in which the lower edge is out of engagement with the surface to be cleaned as the user pushes the handle assembly.