V Walter Hafner

This inventor holds 17 USPTO granted patents. Top assignees: Acorn Engineering Company, Acorn Engineering, Acornvac, Incorporated. Active years: 1984-2002.

IDiyas Innovation Intelligence. (2026). Inventor Profile: V Walter Hafner. Retrieved from https://idiyas.com/inventor/v-walter-hafner

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

USPTO Granted Patents = 17

% Patents Active = 100.0

Average Co-Inventor Count = 2.4

ph-index = 8

Forward Citations = 173(Granted Patents)

Company Filing History:

14 out of 145

Acorn Engineering Company

Acornvac, Incorporated

patents

where one patent can have more than one assignee

Years Active: 1984-2002

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17 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6394411 - Extractor valve assembly (2002-05-28),

2. 6311718 - Activator valve for providing a timed vacuum at an output port (2001-11-06),

3. D411876 - Wash basins (1999-07-06),

4. 5067181 - Blow out toilet with low water volume usage (1991-11-26),

5. 4698860 - Sprayhead with built-in soap system for multi person washfountains (1987-10-13),

6. 4682533 - Vandal resistant and tamper proof pneumatic push button assembly for (1987-07-28),

7. 4630644 - Dual operated metering valve connected to both a hand operated push (1986-12-23),

8. 4630638 - Rotating cap, screen and mounting means for protecting air metering valve (1986-12-23),

9. 4580300 - Combined wall construction form and plumbing fixture mounting device for (1986-04-08),

10. 4571901 - Vandal-resistant security view port (1986-02-25),

11. D281714 - Tamper-proof lavatory and toilet unit (1985-12-10),

12. 4512241 - Plenum/vacuum chamber with duct connection for installation in cabinet (1985-04-23),

13. 4505189 - Vandal-resistant and tamper-proof plenum or vacuum chamber security air (1985-03-19),

14. 4492430 - Security mirror replaceable from pipe chase (1985-01-08),

15. 4462123 - Fabricated floor drain with large stepped flange for elastomeric (1984-07-31),

Title: V Walter Hafner: Innovator in Fluid Control Technologies

Introduction

V Walter Hafner is a notable inventor based in Whittier, California, with a remarkable portfolio of 17 patents. His work primarily focuses on innovations in fluid control technologies, showcasing his expertise and creativity in engineering.

Latest Patents

Among his latest inventions is the extractor valve assembly, designed to control fluid flow in a fluid flow path. This assembly features an elastic valve conduit with grooves that intersect a pinch circumference, allowing for effective fluid flow management. When pinched by blades, the valve completely blocks fluid flow, demonstrating a sophisticated design for fluid control. Another significant invention is the activator valve, which provides a timed vacuum at an output port. This valve operates in response to changes in air pressure, effectively controlling the operation of remote devices by creating a vacuum when needed.

Career Highlights

Throughout his career, Hafner has contributed to various engineering projects, showcasing his innovative spirit and technical skills. He has worked with Acorn Engineering Company, where he applied his expertise in developing advanced fluid control systems.

Collaborations

Hafner has collaborated with notable professionals in the field, including Earl L Morris and Keith D Marshall. These collaborations have likely enriched his work and contributed to the success of his inventions.

Conclusion

V Walter Hafner's contributions to fluid control technologies through his patents reflect his dedication to innovation and engineering excellence. His work continues to influence the industry and inspire future inventors.

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]