Systems and methods for providing wheels having variable spring rates

CA3150286CActive Publication Date: 2026-10-27BERKSHIRE GREY OPERATING CO INC
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Patent Information

Application Number
CA3150286
Authority / Receiving Office
CA · CA
Patent Type
Patents
Current Assignee / Owner
Priority Date
2019-08-09
Filing Date
2020-08-06
Publication Date
2026-10-27
Estimated Expiration
2040-08-06

AI Technical Summary

Technical Problem

Conventional wheel designs fail to maintain consistent traction and isolate ground forces effectively, leading to reduced vehicle control, increased complexity, and inefficiency in mobile devices, particularly in automated warehouse environments, due to issues with suspension systems and pneumatic tires.

Method used

A wheel design featuring a resilient interface with alternating leaf springs that exhibit a dual spring rate, stiffening upon threshold deflection to maintain ride height and traction, reducing the need for additional suspension systems and minimizing deflection under varying loads.

Benefits of technology

The wheel design maintains consistent ground contact and isolates ground forces, enhancing vehicle control and efficiency by limiting deflection and reducing mechanical complexity, while maintaining ride height and traction across varying loads.

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Abstract

A wheel (10) is disclosed that includes an inner hub (12), an outer rim (14), and a plurality of resilient elements (16) that exhibit a first spring constant that is the same for all el- ements, and a second spring constant that is higher than the first spring constant for elements being compressed beyond a thresh- old deflection.
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