Marblehead, MA, United States of America

Wilfred H St Laurent, Jr

This inventor holds 8 USPTO granted patents. Top assignee: Bellofram Corporation. Active years: 1980-1984.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Wilfred H St Laurent, Jr. Retrieved from https://idiyas.com/inventor/wilfred-h-st-laurent-jr

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

Calculating rank

USPTO Granted Patents = 8

% Patents Active = 100.0

Average Co-Inventor Count = 1.1

ph-index = 5

Forward Citations = 80(Granted Patents)

Company Filing History:

8 out of 15

Bellofram Corporation

patents

Years Active: 1980-1984

Loading Chart...

8 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4466455 - Rolling diaphragm vacuum control with check valve (1984-08-21),

2. 4390036 - Rolling diaphragm vacuum control (1983-06-28),

3. 4263838 - Pneumatic positioner (1981-04-28),

4. 4253675 - Improvements of sealed shafts (1981-03-03),

5. 4244589 - Sealed shaft of reduced diameter (1981-01-13),

6. 4229010 - Self-aligning shaft seal (1980-10-21),

7. 4219042 - Pneumatic relay (1980-08-26),

8. 4208060 - Sealed shaft (1980-06-17),

Title: Innovations of Wilfred H St Laurent, Jr.

Introduction

Wilfred H St Laurent, Jr. is a notable inventor based in Marblehead, MA (US). He has made significant contributions to the field of vacuum control technology, holding a total of 8 patents. His work is characterized by innovative designs that enhance the efficiency and functionality of vacuum systems.

Latest Patents

Among his latest patents is the "Rolling diaphragm vacuum control with check valve." This invention is a vacuum controller designed to maintain a defined vacuum pressure to a remote location. It features a housing that defines a cavity, with means for connecting the cavity to the remote location, a high vacuum, and a control signal pressure. The design includes a cup-shaped plunger with an opening in its side wall, which is adapted to reciprocate within the cavity. A flexible diaphragm seals the interface between the housing and the plunger, functioning as a valving mechanism. When the plunger moves in one direction, the diaphragm closes off the opening in the side wall, and when it moves in the opposite direction, the opening is revealed. Additionally, a check valve is incorporated to prevent inversion of the diaphragms.

Another significant patent is the "Rolling diaphragm vacuum control." Similar to the previous invention, this vacuum controller is designed to maintain a defined vacuum pressure to a remote location. It also includes a housing that defines a cavity and means for connecting to the remote location, high vacuum, and control signal pressure. The cup-shaped plunger and flexible diaphragm work together to regulate the vacuum pressure effectively.

Career Highlights

Wilfred H St Laurent, Jr. is currently employed at Bellofram Corporation, where he continues to innovate in the field of vacuum technology. His expertise and contributions have been instrumental in advancing the capabilities of vacuum control systems.

Collaborations

He collaborates with Christos Athanassiu, working together to enhance the development of vacuum control technologies.

Conclusion

Wilfred H St Laurent, Jr. is a prominent inventor whose work in vacuum control technology has led to several important patents. His innovative designs and contributions continue to impact the industry positively.

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]