Jeffrey D Metcalf

This inventor holds 24 USPTO granted patents, primarily in Exercise Equipment. Top assignees: Sundstrand Corporation, Roadmaster, Inc.. Active years: 1987-1996.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Jeffrey D Metcalf. Retrieved from https://idiyas.com/inventor/jeffrey-d-metcalf

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 24

% Patents Active = 100.0

Average Co-Inventor Count = 1.5

ph-index = 10

Forward Citations = 335(Granted Patents)

Location History:

Rockford, IL (US) (1987 - 1989)
Albion, IL (US) (1989 - 1996)

Company Filing History:

16 out of 1,372

Sundstrand Corporation

Years Active: 1987-1996

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Areas of Expertise:

Ski Exercise Machine

Quick Change Mechanism

Overspeed Protection

Torque Limiter

Brake Actuator

Actuator System

Flywheel

Exercise Cycle

Hydraulic Motors

Overtravel Stop

Governor Checkout

Dual Failure Shut-Off

24 patents (USPTO):Sort by Forward CitationsExplore Patents

1. D375767 - Ski exercise machine (1996-11-19),

2. 5503610 - Quick change mechanism for synchronous/asynchronous exercise machine (1996-04-02),

3. 5499957 - Quick change mechanism for synchronous/asynchronous exercise machine (1996-03-19),

4. D364662 - Combined base and arm mechanism for a ski exercise machine (1995-11-28),

5. 5443434 - Exercise device (1995-08-22),

6. 5338273 - Quick change mechanism for synchronous/asynchronous exercise machine (1994-08-16),

7. 5290212 - Exercise cycle (1994-03-01),

8. 4986734 - Overspeed protection system for aircraft fan engine (1991-01-22),

9. 4977794 - Flywheel (1990-12-18),

10. 4930312 - Brake actuator for hydraulic motors (1990-06-05),

11. 4901746 - Anticipating overspeed governor (1990-02-20),

12. 4898265 - Torque limiter (1990-02-06),

13. 4884401 - Three position dual failure shut-off valve system (1989-12-05),

14. 4869106 - Governor checkout apparatus and method (1989-09-26),

15. 4867295 - Shock absorbing overtravel stop (1989-09-19),

Title: Jeffrey D. Metcalf: Innovative Inventor Transforming Exercise Technology

Introduction

Jeffrey D. Metcalf, an accomplished inventor based in Albion, IL, has made significant contributions to the field of exercise equipment. With a remarkable portfolio of 24 patents, he has developed innovative solutions aimed at enhancing workout experiences and efficiency.

Latest Patents

One of Metcalf's latest inventions is the ski exercise machine featuring a unique quick change mechanism for synchronous and asynchronous exercise modes. This cutting-edge design allows users to switch between two exercise modalities: a synchronous mode where the limbs reciprocate oppositely and an asynchronous mode where the limbs operate independently. The machine comprises movable elements for both limbs, operatively connected to a load source through drive belts. The innovative quick change mechanism simplifies the transition between modes, making workouts more versatile and accommodating individual fitness goals.

Career Highlights

Metcalf's career includes notable contributions while working at reputable companies such as Sundstrand Corporation and Roadmaster, Inc. His expertise in the field of exercise machines has led to the development of various patents that have advanced workout technology.

Collaborations

Throughout his career, Metcalf has collaborated with talented individuals, including coworkers Daniel F. Brashear and Gary D. Gillingham. These partnerships have fostered a rich environment for innovation, allowing for the exchange of ideas and technologies that have influenced his inventions.

Conclusion

Jeffrey D. Metcalf is a prominent figure in the world of fitness innovation, demonstrating a commitment to improving exercise equipment through his inventive prowess. His latest projects and collaborations signal a bright future for the fitness industry, as he continues to develop technologies that enhance the way we exercise.

Profile summary based on public USPTO records.

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]