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For the Inventor, By the Inventor

Pickett, WI, United States of America

David J Hale

This inventor holds 10 USPTO granted patents. Top assignee: Brunswick Corporation. Active years: 1977-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: David J Hale. Retrieved from https://idiyas.com/inventor/david-j-hale

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

USPTO Granted Patents = 10

% Patents Active = 100.0

Average Co-Inventor Count = 1.1

ph-index = 8

Forward Citations = 140(Granted Patents)


Location History:

  • Picket, WI (US) (1982)
  • Pickett, WI (US) (1977 - 1998)

Company Filing History:

goldMedal10 out of 2,669 
 
Brunswick Corporation
 patents

Years Active: 1977-1998

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10 patents (USPTO):Explore Patents
1. 5820426 - Exhaust system for personal watercraft (1998-10-13),
2. 5720638 - Engine drive shaft coupler for personal watercraft (1998-02-24),
3. 4768494 - Idling system for multi-cylinder two-stroke engine (1988-09-06),
4. 4484442 - Exhaust system for four cylinder two-cycle engines (1984-11-27),
5. 4328770 - Internal combustion engine with die castable loop transfer system (1982-05-11),
6. 4184462 - Internal combustion engine (1980-01-22),
7. 4092958 - Internal combustion engine (1978-06-06),
8. 4082068 - V-engine cooling system particularly for outboard motors and the like (1978-04-04),
9. 4066057 - Cylinder head mounting apparatus for internal combustion engines (1978-01-03),
10. 4052952 - Hydraulic powered trim and tile apparatus for marine propulsion devices (1977-10-11),

Title: Innovations by David J Hale

Introduction

David J Hale is a notable inventor based in Pickett, Wisconsin, who has made significant contributions to the field of personal watercraft technology. With a total of 10 patents to his name, Hale's work focuses on enhancing the performance and efficiency of watercraft systems.

Latest Patents

One of Hale's latest patents is an exhaust system for personal watercraft. This innovative exhaust system features an exhaust adapter plate and an exhaust header pipe that allows exhaust to exit from the rear of a horizontally mounted internal combustion engine. The design includes openings that correspond to the engine exhaust port and engine cooling water jacket, ensuring optimal performance. The exhaust passage through the header pipe is tuned for efficiency while maintaining a compact design that facilitates easy servicing of the engine compartment.

Another significant patent by Hale is the engine drive shaft coupler for personal watercraft. This coupling assembly effectively connects an engine crankshaft to a jet pump impeller shaft while accommodating substantial engine vibrations. The design includes elastomeric isolators that provide durability and reduce engine noise resonating from the watercraft hull. This innovation enhances the overall user experience by minimizing disruptive sounds during operation.

Career Highlights

David J Hale is currently employed at Brunswick Corporation, a leading company in the marine and recreational products industry. His work at Brunswick has allowed him to apply his inventive skills to develop cutting-edge technologies for personal watercraft.

Collaborations

Hale has collaborated with notable coworkers such as William B Mayer and Delhardt K Kollman, contributing to the advancement of watercraft technology through teamwork and shared expertise.

Conclusion

David J Hale's innovative patents and contributions to personal watercraft technology demonstrate his commitment to enhancing the industry. His work continues to influence the design and functionality of watercraft systems, making him a significant figure in the field of invention.

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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