Company Filing History:
34 out of 1,246 
5 out of 13 
2 out of 832,880 Years Active: 1976-2000
Areas of Expertise:
Title: Innovations of Bo H Ljung: A Pioneering Inventor in Gyroscopic Technology
Introduction
Bo H Ljung, an accomplished inventor based in Wayne, NJ, is recognized for his significant contributions to the field of gyroscopic technology, holding an impressive total of 41 patents. His innovative inventions have propelled advancements in sensor technology, particularly in the areas of Coriolis gyro sensors and ring laser gyroscopes.
Latest Patents
Ljung's latest patents illustrate his expertise and inventive prowess. One notable innovation is the **Coriolis gyro sensor**, which features a single or dual input-axis design. This sensor comprises a single planar inertia-member connected to a coplanar counter-inertia through elastic beams, effectively countering reaction forces and isolating the inertia-member from external vibrations. The sensor operates by angularly dithering the inertia-member, enabling it to detect input rates that induce Coriolis moments, subsequently generating signals representative of angular input rates via electrostatic damping electrodes.
Another groundbreaking patent is his **system for substantially eliminating lock-in in a ring laser gyroscope**. This innovative gyro system includes a fixed mirror and two movable mirror assemblies that facilitate the counter-rotation of laser beams between them. Through the application of amplitude and phase control circuits, Ljung's design enables the movable mirrors to oscillate sinusoidally and out of phase, effectively resolving lock-in issues that might affect performance.
Career Highlights
Throughout his career, Ljung has made significant strides in the fields of guidance and navigation. He has worked with reputable companies such as the **Singer Company** and **Kearfott Guidance & Navigation Corporation**, where he has further honed his skills as an inventor. His work in these organizations has contributed greatly to advancements in navigation technologies utilized in various applications.
Collaborations
Ljung's success is also attributed to his important collaborations with notable figures in the field. He has teamed up with colleagues such as **James G Koper** and **John C Stiles**, exchanging ideas and insights that have led to significant technological breakthroughs.
Conclusion
Bo H Ljung stands out as a pioneering inventor whose contributions to gyroscopic technology continue to influence modern innovations in sensor systems. With a robust portfolio of patents and a history of collaboration with industry experts, his work represents the forefront of the evolving landscape of guidance and navigation technologies.