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For the Inventor, By the Inventor

Glendale, CA, United States of America

Roger O Durham

This inventor holds 15 USPTO granted patents. Top assignee: Other. Active years: 1977-1999.

USPTO Granted Patents = 15

% Patents Active = 100.0

Average Co-Inventor Count = 1.0

ph-index = 9

Forward Citations = 160(Granted Patents)


Location History:

  • Los Angeles, CA (US) (1977)
  • Glendale, CA (US) (1983 - 1999)

Company Filing History:

goldMedal15 out of 834,411 
Other
 patents

Years Active: 1977-1999

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15 patents (USPTO):Explore Patents
1. 5954007 - Catamaran for sailing and rowing (1999-09-21),
2. 5809844 - Spacing ring for bicycle chainrings (1998-09-22),
3. 5702006 - Workstand for bicycles (1997-12-30),
4. 5623856 - Bicycle crank arm with internal flange (1997-04-29),
5. 5305654 - Headset for bicycles with external forks (1994-04-26),
6. 4940340 - Sealed ball bearing mechanism (1990-07-10),
7. 4840084 - Freewheel mechanism for bicycles (1989-06-20),
8. 4758205 - Derailleur mechanism for bicycles (1988-07-19),
9. 4728218 - Locking key mechanism (1988-03-01),
10. 4704919 - Two-piece crankshaft for bicycles (1987-11-10),
11. 4526558 - Chain engagement slot for bicycle sprockets (1985-07-02),
12. 4373760 - Drawbolt bearing support for bicycle pedals (1983-02-15),
13. 4051829 - Audible enrichment bleed warning device for fuel-injected engines (1977-10-04),
14. 4043373 - Rim strip for bicycle wheels (1977-08-23),
15. 4004468 - Two-position pedal for bicycles (1977-01-25),

Title: The Innovative Mind of Roger O Durham

Introduction

Roger O Durham, an accomplished inventor based in Glendale, CA, has made significant strides in the realm of innovation with a total of 15 patents to his name. His inventive spirit is demonstrated through his latest contributions to sailing and cycling technologies.

Latest Patents

Among Roger's latest innovations is a unique catamaran designed for both sailing and rowing. This catamaran features a U-shaped mast and comes with the option of either a triangular lateen sail or a four-sided lug sail, alongside provisions for rowing. This dual functionality allows the vessel to be propelled by either sails or oars, enhancing versatility for users.

Another notable invention is a cylindrical spacing ring specifically designed for bicycle chainrings. This component spaces apart the chainrings and is designed to encompass a plurality of threaded fasteners, securing the chainrings to a bicycle crank arm. This invention is a testament to Roger's ability to identify and solve challenges in everyday technology.

Career Highlights

Throughout his career, Roger O Durham has established himself as a skilled inventor, constantly pushing the boundaries of design and functionality. His impressive portfolio of patents reflects his expertise and passion for creating innovative solutions in diverse fields.

Collaborations

While specific collaborations have not been detailed, Roger's work often involves partnerships with engineers and designers who share his vision for advancing technology. Such collaborations contribute to the refinement and production of his inventions.

Conclusion

Roger O Durham stands out as a remarkable inventor in Glendale, CA, whose patents showcase his commitment to innovation in sailing and cycling. With 15 patents and a continuous drive for creativity, he embodies the spirit of ingenuity that defines the world of invention. His work not only enhances the functionality of everyday products but also inspires future generations of inventors.

Profile summary based on public USPTO records.
Please report any incorrect information to [email protected]
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