Gerald F Varnum

Title: The Innovations of Gerald F. Varnum

Introduction

Gerald F. Varnum is a notable inventor based in Marshalltown, IA (US). He has made significant contributions to the field of pressure sensing technology, holding a total of 3 patents. His work reflects a deep understanding of fluid dynamics and control systems.

Latest Patents

One of Varnum's latest patents is a fluid-filled force or pressure sensor designed for measuring external forces such as fluid pressure. This innovative apparatus features a housing with a substantially planar backup surface and a flexible diaphragm sealed to the backup surface. A variable volume fluid chamber is created between the backup surface and the diaphragm, filled with a pressurized working fluid that causes the diaphragm to flex outwardly. Additionally, the apparatus includes a sensor chamber in fluid communication with the variable volume fluid chamber, equipped with a means for sensing variations in the density of the working fluid. These variations are caused by the diaphragm's flexing in response to changes in external pressure.

Another significant invention by Varnum is a positioner-actuator control system. This system incorporates a pair of relays and a pivotally mounted beam that operates in response to a pneumatic control signal. The summing beam receives forces from an input signal, a controlled device position lever, a zero adjustment, and a damping mechanism. This damping mechanism consists of flat springs attached to both the relay beam and the summing beam, with a movable clamp allowing user adjustment of the damping force.

Career Highlights

Throughout his career, Gerald F. Varnum has worked with prominent companies such as Fisher Controls International LLC and Fisher Controls Company, Inc. His experience in these organizations has contributed to his expertise in developing innovative control systems and sensors.

Collaborations

Varnum has collaborated with notable individuals in his field, including George Wayne Gassman and Christopher C. Duke. These partnerships have likely enhanced his work and led to further advancements in technology.

Conclusion

Gerald F. Varnum's contributions to the field of pressure sensing and control systems demonstrate his innovative spirit and technical expertise. His patents reflect a commitment to advancing technology and improving measurement systems.