Location History:
- Metairie, LA (US) (2003)
- Chisago City, MN (US) (2023 - 2024)
Company Filing History:
3 out of 3 
2 out of 3 
1 out of 832,718 Years Active: 2003-2025
Title: Innovations by Robert L. Grinstead
Introduction
Robert L. Grinstead is an accomplished inventor based in Chisago City, MN (US). He holds a total of 6 patents that showcase his innovative contributions to the field of electric vehicles and commercial vehicle accessibility.
Latest Patents
One of his latest patents is for "Optimized AC powered auxiliary units for medium/heavy duty configurable electric trucks." This invention describes a zero-emission configurable medium/heavy duty class electric truck that utilizes high-voltage, battery-powered electrical energy for both motive power and auxiliary powered unit power. The design includes a central frame with main frame rails to support battery modules, a front subframe for the front axle assembly and cab, and a rear subframe for the rear axle assembly and payload module. The system is powered by a battery management system that manages the generation and distribution of alternating-current (AC) electrical power.
Another significant patent is the "Stair system for vehicle," which provides access to a cargo platform of a commercial vehicle. This stair system is designed to be movable between a deployed and stowed configuration. It consists of a mounting plate, a stair assembly, and a linkage assembly. The stair assembly includes a top platform that is slidably received within the mounting plate and a plurality of step platforms that pivotally attach to the top platform. This innovative design allows the stair system to be positioned beneath the cargo platform when stowed and to extend outwardly when deployed.
Career Highlights
Throughout his career, Robert has worked with notable companies such as Zeus Electric Chassis, Inc. and Opus Mach LLC. His work has significantly impacted the development of electric vehicles and their auxiliary systems.
Collaborations
Robert has collaborated with talented individuals in the industry, including Deepak Kapur and David Bruford. Their combined expertise has contributed to the success of his innovative projects.
Conclusion
Robert L. Grinstead is a notable inventor whose work in electric vehicle technology and accessibility solutions has made a significant impact. His patents reflect a commitment to innovation and sustainability in the automotive industry.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.