Paul N Dahlstrand

Title: Paul N Dahlstrand: Innovator in Torque Measurement and Spline Connections

Introduction

Paul N Dahlstrand is a notable inventor based in Andover, MA (US), recognized for his contributions to the field of engineering with a total of four patents. His innovative work primarily focuses on coupling mechanisms and torque measurement devices, showcasing his expertise in mechanical engineering.

Latest Patents

One of Dahlstrand's latest patents is a coupling mechanism for establishing an involute spline connection. This invention includes a male spline with an end, an axis, and a first involute defining peaks and valleys. It also features a follower member, a female involute with a second involute defining second peaks and valleys, and a locking member that has a locking member involute defining locking member peaks and valleys. The design incorporates a cam groove along the exterior of the locking member, allowing the follower to engage the cam groove. This mechanism enables the locking member to be repositioned to a locked position, ensuring that each of the locking member peaks is adjacent to a first valley, and an unlocked position where the first and locking peaks are aligned.

Another significant patent by Dahlstrand is an absorption dynamometer torque measuring device and calibration method. This invention is an in-line torque meter designed for use with an absorption dynamometer. It measures the twist of a rotating shaft that transmits torque from an engine to an air dynamometer using a single sensor on the adjacent stationary structure. The torque shaft is supported by a splined attachment and preloaded angular contact ball bearings. The angular displacement of interleaved sleeves attached to the shaft is measured as a phase shift in the signal generated by the sensor, which is directly proportional to the applied torque. This innovative design allows for a zero-speed calibration check, enhancing the accuracy of torque measurements.

Career Highlights

Throughout his career, Paul N Dahlstrand has worked with reputable companies, including Northern Research & Engineering Corporation and Ingersoll-Rand Company. His experience in these organizations has contributed to his development as an inventor and engineer.

Collaborations

Dahlstrand has collaborated with notable individuals in his field, including Walter L Brassert, further enhancing his innovative capabilities and contributions to engineering.

Conclusion

Paul N Dahlstrand's work in developing advanced coupling mechanisms and torque measurement devices highlights his significant contributions to engineering. His patents reflect a commitment to innovation and precision in mechanical design.