Enhanced Mobile Cleaning Robot with Adaptive Suspension

Publication ID: 24-11857139_0001_PTD
Published: November 07, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Mobile Cleaning Robot with Adaptive Suspension,” Published Technical Disclosure No. 24-11857139_0001_PTD, Published November 07, 2025, available at https://archive.pr1or.art/24-11857139_0001_PTD
This technical disclosure describes improvements that would be readily apparent to a Person Having Ordinary Skill In The Art (PHOSITA) when considered in combination with the foundational architecture disclosed in U.S. Patent No. 11,857,139.

Summary of the Inventive Concept

An improved mobile cleaning robot with advanced suspension adjustment capabilities, enhancing performance, efficiency, and adaptability across diverse environments and operating modes.

Background and Problem Solved

The original patent, 'Mobile cleaning robot with adjustable suspension,' provided a foundational concept for autonomous mobile cleaning robots. However, it had inherent limitations, such as fixed suspension stiffness, which affected its performance and adaptability in varying terrain and operating modes. The new inventive concept addresses these limitations by introducing advanced suspension adjustment systems, terrain-sensing capabilities, load-balancing mechanisms, and self-leveling features.

Detailed Description of the Inventive Concept

The enhanced mobile cleaning robot features a suspension adjustment system that dynamically adjusts the suspension stiffness in response to changes in the robot's operating mode or terrain. This is achieved through advanced sensors and algorithms that detect and analyze environmental conditions, adjusting the suspension stiffness to optimize performance, stability, and efficiency. Additionally, the robot incorporates a terrain-sensing system to detect changes in terrain and adjust the suspension stiffness accordingly. A load-balancing system redistributes weight between the drive wheels and caster or skid based on the operating mode of the mobile cleaning robot, ensuring optimal traction and stability. Furthermore, a self-leveling system maintains a consistent ground clearance regardless of the operating mode or terrain, guaranteeing smooth and efficient operation.

Novelty and Inventive Step

The new inventive concept introduces novel suspension adjustment capabilities, terrain-sensing features, load-balancing mechanisms, and self-leveling systems, which are not present in the original patent. These advancements provide a significant improvement in performance, efficiency, and adaptability, making the enhanced mobile cleaning robot more effective and reliable in diverse environments and operating modes.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept could include variations in sensor types, algorithmic approaches, and mechanical designs for the suspension adjustment system, terrain-sensing system, load-balancing system, and self-leveling system. Additionally, the inventive concept could be applied to other types of autonomous mobile robots, such as lawn mowers or agricultural robots, to enhance their performance and adaptability.

Potential Commercial Applications and Market

The enhanced mobile cleaning robot has significant commercial potential in the consumer robotics and cleaning industries, particularly in the growing market for autonomous cleaning solutions. The inventive concept's adaptability and performance enhancements make it an attractive solution for various environments, including homes, offices, and public spaces.

CPC Classifications

SectionClassGroup
A A47 A47L9/066
A A47 A47L7/009
A A47 A47L9/009
A A47 A47L9/2847
A A47 A47L9/2852
A A47 A47L11/28
A A47 A47L11/4011
A A47 A47L11/4036
A A47 A47L11/4055
A A47 A47L11/4061
A A47 A47L11/4063
A A47 A47L11/4072
A A47 A47L2201/04
A A47 A47L2201/06

Field of Art

Autonomous mobile cleaning robotics, specifically focusing on robotic floor cleaning systems with adjustable mechanical suspension and operational mode adaptations

Person of Ordinary Skill (PHOSITA) Profile

A robotics engineer with expertise in autonomous mobile platforms, mechanical design, sensor integration, and control systems, holding at least a bachelor's degree in mechanical or robotics engineering with 3-5 years of experience in autonomous cleaning robot development

Obviousness Rationale

A PHOSITA would recognize that the suspension adjustment and terrain-sensing techniques disclosed in the PTD represent predictable engineering variations of the source patent's mobile cleaning robot framework. The core mechanical and operational principles are substantially consistent, with the PTD introducing incremental improvements in adaptive suspension and mode-based performance optimization. These variations represent standard design iterations that would be apparent to a skilled practitioner seeking to enhance robotic mobility and cleaning efficiency.

Obvious Combinations & Variations

Source Patent Element
Wheel stop mechanism for changing robot operational modes
PTD Variation
Dynamic suspension stiffness adjustment based on operating mode
Obviousness Reasoning
A PHOSITA would recognize that mode-dependent mechanical adaptations are a predictable design choice for improving robot performance, with known techniques for sensor-driven suspension modulation
Source Patent Element
Drive system operable to change between vacuuming and mopping modes
PTD Variation
Terrain-sensing system for automatic suspension stiffness adjustment
Obviousness Reasoning
Adaptive suspension control represents a logical extension of existing mode-switching capabilities, utilizing standard sensor integration techniques to enhance robot mobility
Source Patent Element
Mobile robot with movable pad assembly for different operational configurations
PTD Variation
Load-balancing system redistributing weight between drive wheels and caster based on operating mode
Obviousness Reasoning
Weight distribution optimization is a standard engineering approach for improving robotic platform stability and performance across different operational scenarios
Source Patent Element
Autonomous cleaning robot with body and drive wheel configuration
PTD Variation
Self-leveling system maintaining consistent ground clearance
Obviousness Reasoning
Ground clearance management represents a predictable mechanical enhancement for improving robot navigation and cleaning effectiveness across varied surfaces
35 U.S.C. § 103 Summary: Based on the teachings of US 11857139 and the disclosed technical variations, a person of ordinary skill in the art would find the claimed innovations of the present publication to constitute obvious extensions of existing autonomous mobile cleaning robot technology, rendering potential derivative claims obvious and unpatentable under 35 U.S.C. ยง 103.

Original Patent Information

Patent NumberUS 11,857,139
TitleMobile cleaning robot with adjustable suspension
Assignee(s)iRobot Corporation