Ho L Cheung

US Patent:

20190033869, Jan 31, 2019

Filed:

Jul 25, 2017

Appl. No.:

15/659478

Inventors:

- Newark CA, US
Ho Chong CHEUNG - Sunnyvale CA, US

International Classification:

G05D 1/02
A47L 11/03
A47L 11/14
A47L 11/24
A47L 11/282
A47L 11/40

Abstract:

In one embodiment, a robot is described which uses pads for both operating on a surface and movement of the robot. The pads are tilted about a single axis. In one embodiment, the pads are slightly curved. In one embodiment, three pads are used. By using an odd number of pads (e.g., 3) with one rotating in an opposite direction, translational movement can be achieved by using non-center contact points without varying the tilt angle and angular velocity of the pads to achieve a translation direction.

US Patent:

20160345792, Dec 1, 2016

Filed:

May 26, 2016

Appl. No.:

15/165027

Inventors:

- Newark CA, US
Ho Chong CHEUNG - Sunnyvale CA, US
Charles Albert PITZER - Newark CA, US

International Classification:

A47L 11/40
A47L 11/24

Abstract:

An apparatus draws or leads hair and other potential entanglement debris away from the hub of a brush assembly in a vacuum as the brush rotates during vacuuming, thus avoiding or reducing entanglement and attendant problems, and obviating or reducing the need for manual removal of the entanglement. The apparatus has a profile which draws hair and other entanglement debris away from a hub of the brush assembly, or prevents it from reaching the hub, thus enabling the brush/brush assembly to continue to rotate freely. In one implementation, the apparatus attaches to a vacuum brush in an autonomous robotic vacuum.