Evald Holstad

Title: Evald Holstad: Innovator in Sealing Technology

Introduction

Evald Holstad is a notable inventor based in Sola, Norway. He has made significant contributions to the field of sealing technology, holding 2 patents that showcase his innovative approach to solving complex engineering challenges.

Latest Patents

Holstad's latest patents include an "Apparatus for sealing a bore, a system comprising the apparatus and a method for using the apparatus." This invention relates to a sealing apparatus, system, and method for use in a well pipe. The apparatus features a mandrel arranged around a center axis, a radially movable gripping device, a radially movable packer element, and an axially movable activation device designed to generate axial forces for activating the apparatus. Additionally, it includes a radially movable centralizer for centering the apparatus. The activation device is operatively connected to the gripping device, packer element, and centralizer, allowing for their respective activation and radial movement between retracted, passive positions and expanded, active positions.

Another significant patent is the "Plug for setting in a pipe." This invention comprises a shaft, a force transmission body that is rotatable and axially movable about the shaft via a thread connection, and a stop body. The design includes a first compression body, a conical support body, at least one movable anchoring body, a second compression body, and at least one elastic sealing body. The shaft and the first compression body are in direct contact and are connected in a non-rotational manner to prevent rotation.

Career Highlights

Throughout his career, Evald Holstad has worked with E Holstad Holding AS, where he has further developed his expertise in sealing technologies. His work has contributed to advancements in the industry, particularly in applications related to well pipes.

Collaborations

Holstad has collaborated with notable professionals in his field, including Tommy Svartvatn and Tom Henning Bode. These collaborations have allowed him to enhance his inventions and expand his impact on sealing technology.

Conclusion

Evald Holstad is a distinguished inventor whose work in sealing technology has led to innovative solutions in the industry. His patents reflect a deep understanding of engineering principles and a commitment to advancing technology.