Title:
Surface cleaning robots
Document Type and Number:
Japanese Patent JP6231084
Kind Code:
B2
Abstract:
A mobile surface cleaning robot that includes a robot body having a forward drive direction and a drive system supporting the robot body above a floor surface. The drive system includes right and left drive wheels and a caster wheel assembly disposed rearward of the drive wheels. The caster wheel assembly includes a caster wheel supported for vertical movement and a suspension spring biasing the caster wheel toward the floor surface. The robot also includes a cleaning system supported by the robot body forward of the drive wheels and having at least one cleaning element that engages the floor surface. The suspension spring has a spring constant sufficient to elevate a rear end of the robot body above the floor surface to maintain engagement of the at least one cleaning element with the floor surface.
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Inventors:
Doughty Bryan
Application Number:
JP2015511820A
Publication Date:
November 15, 2017
Filing Date:
March 13, 2014
Export Citation:
Assignee:
IRobot Corporation
International Classes:
A47L9/28; A47L9/00; A47L9/04
Domestic Patent References:
| JP201296042A | ||||
| JP9263140A | ||||
| JP201345463A | ||||
| JP2002112931A | ||||
| JP659578U | ||||
| JP2002360481A | ||||
| JP200333310A |
Foreign References:
| WO2013047073A1 |
Attorney, Agent or Firm:
Takaki Nishijima
Disciple Maru Ken
Shinichiro Tanaka
Mitsuru Matsushita
Ichiro Kurasawa
Ryo Ishizaki
Disciple Maru Ken
Shinichiro Tanaka
Mitsuru Matsushita
Ichiro Kurasawa
Ryo Ishizaki
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