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For the Inventor, By the Inventor

Rockford, IL, United States of America

Mark R Estabrook

This inventor holds 8 USPTO granted patents. Top assignees: Barnes Drill Co., Barnes International, Inc.. Active years: 1977-1996.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Mark R Estabrook. Retrieved from https://idiyas.com/inventor/mark-r-estabrook

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

USPTO Granted Patents = 8

% Patents Active = 100.0

Average Co-Inventor Count = 1.2

ph-index = 5

Forward Citations = 65(Granted Patents)


Company Filing History:

goldMedal7 out of 11 
 
Barnes Drill Co.
 patents
silverMedal1 out of 6 
 
Barnes International, Inc.
 patents

Years Active: 1977-1996

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8 patents (USPTO):Explore Patents
1. 5527214 - Roughing finishing honing tool with push/pull expansion mechanism (1996-06-18),
2. 5050352 - Honing stone assembly (1991-09-24),
3. 4686035 - Cylindrical drum magnetic separator (1987-08-11),
4. 4528776 - Honing machine with stonewear compensator (1985-07-16),
5. 4421647 - Filter with indexable filter web (1983-12-20),
6. 4199455 - Combined magnetic and cyclonic separating apparatus (1980-04-22),
7. 4110218 - Liquid cleaning apparatus having cyclonic separators (1978-08-29),
8. 4062780 - Vacuum filter with indexable filter web (1977-12-13),

Title: Mark R Estabrook: Innovator in Honing Tool Technology

Introduction

Mark R Estabrook is a notable inventor based in Rockford, IL (US), recognized for his contributions to honing tool technology. With a total of 8 patents to his name, Estabrook has made significant advancements in the field of precision machining.

Latest Patents

Among his latest innovations is the "Roughing Finishing Honing Tool with Push/Pull Expansion Mechanism." This tool features a body that supports angularly spaced roughing and finishing hones, allowing for radial movement between collapsed and expanded positions. The expansion of the roughing hones is achieved through axially spaced ramps when a rod is moved linearly in one direction, while the finishing hones expand through additional ramps when the rod is shifted in the opposite direction. The tool also includes adjusting nuts that enable users to modify the inclination of both the roughing and finishing hones.

Another significant patent is the "Honing Stone Assembly," which consists of an abrasive honing stick bonded within a channel-shaped shell made of sheet metal. This assembly is detachably secured to a stone holder by retaining studs, allowing for a compact design that accommodates a larger number of assemblies within a given diameter hone body.

Career Highlights

Estabrook has worked with reputable companies such as Barnes Drill Co. and Barnes International, Inc., where he has applied his expertise in honing technology. His work has contributed to the development of innovative tools that enhance machining efficiency and precision.

Collaborations

Throughout his career, Estabrook has collaborated with notable individuals, including James I Marchman and Charles R Van Sickle. These partnerships have fostered a creative environment that has led to the development of advanced honing solutions.

Conclusion

Mark R Estabrook's contributions to honing tool technology have established him as a significant figure in the field. His innovative patents and collaborations reflect his commitment to advancing precision machining.

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]
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