Invacare has filed a patent for a wheelchair suspension system. The system includes a wheel assembly with a housing, resilient member, sleeves, and wheel support. The suspension system provides support between the main drive wheels and frame, as well as between the anti-tip wheels and frame. GlobalData’s report on Invacare gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Invacare, HEV energy management was a key innovation area identified from patents. Invacare's grant share as of January 2024 was 59%. Grant share is based on the ratio of number of grants to total number of patents.

Wheel assembly for vehicle with suspension system

Source: United States Patent and Trademark Office (USPTO). Credit: Invacare Corporation

The patent application (Publication Number: US20240016679A1) discloses a wheel assembly for a vehicle, comprising a housing, sleeves, a resilient member, a wheel spindle member, and a wheel. The assembly includes specific configurations and arrangements of these components to ensure proper functioning and durability. The housing has an inner wall surface, with the sleeves and resilient member in contact with each other and the wheel spindle member. The design also includes features such as recessed portions in the housing for accommodating various components, a cylindrical bushing for the resilient member, and a lubricant between the second sleeve and the wheel spindle member.

Additionally, the patent application describes a wheelchair with a unique pivot arm system, rear wheels, and a biasing member. The pivot arms have specific contact surfaces and stop surfaces, allowing for controlled movement and stability of the wheelchair. The biasing member is designed to respond to tipping behavior, ensuring the wheelchair remains balanced and safe for the user. The configuration of the pivot arms, contact surfaces, and stop surfaces, along with the use of a bumper member, contribute to the overall functionality and safety of the wheelchair design outlined in the patent application.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies