Location History:
- Erie, PA (US) (1984)
- North East, PA (US) (1988)
Company Filing History:
Years Active: 1984-1988
Title: Innovations of Stephen G. Ratkowski
Introduction
Stephen G. Ratkowski is an accomplished inventor based in Erie, Pennsylvania. He has made significant contributions to the field of engineering with his innovative designs and patents. With a total of two patents to his name, Ratkowski has demonstrated his expertise and creativity in developing advanced technologies.
Latest Patents
One of Ratkowski's latest patents is the Non-rotating Stem Valve. This invention features a rising stem valve that includes a valve body, a two-part valve stem, and a stem guide washer. The valve body is designed with a valve seat positioned between an inlet and outlet port. The two-part valve stem consists of a rotating stem and a non-rotating stem, where the rotating stem has a threaded bore that receives the threaded end of the non-rotating stem. The non-rotating stem is uniquely designed with a non-circular cross-section, allowing it to carry a closure head to the valve seat. The stem guide washer is strategically positioned to prevent the stem from rotating when the upper stem is turned.
Another notable patent is the Consistometer, which is engineered for high temperature and high pressure applications. This consistometer comprises a cylindrical pressure vessel with an integral bottom and cover. It features a non-magnetic canister that extends downwardly from the bottom and is sealed within the vessel. A driven magnet assembly is journaled in this canister, connected to a drive shaft that extends into the vessel. Additionally, a second non-magnetic canister extends upwardly from the cover, housing a driving magnet assembly. The design includes a sample cup connected to the upwardly extending drive shaft and a paddle connected to the downwardly extending shaft. An external instrument measures the torque magnetically transferred from the shaft to the driven magnet assembly, while a motor drives the assembly at a constant speed.
Career Highlights
Stephen G. Ratkowski is currently employed at Autoclave Engineers, Ltd., where he continues to innovate and develop new technologies. His work has significantly impacted the engineering field, particularly in valve and pressure vessel design.
Collaborations
Throughout his career, Ratkowski has collaborated with notable colleagues, including Robert F. Ruyak and Samuel D. Ciprich. These partnerships have fostered a creative environment that encourages the development of groundbreaking inventions.
Conclusion
Stephen G.