Lee F Kramer

Title: Lee F. Kramer: Innovator in Hydraulic Control Systems

Introduction

Lee F. Kramer is a notable inventor based in Waukegan, Illinois. He has made significant contributions to the field of hydraulic control systems, holding a total of three patents. His work primarily focuses on enhancing the functionality and efficiency of machinery used in construction and heavy industries.

Latest Patents

One of Kramer's latest patents is for a hydraulic control for a dozer blade. This invention features a hydraulic circuit designed for pitch and tilt control of a dozer blade attached to push arms on a vehicle. The system includes a pitch ram connected between one push arm and the blade, along with a dual actuator that consists of a second pitch ram and a tilt ram. A pitch valve directs hydraulic fluid to and from the pitch rams, ensuring equal flow rates through a diverter/combiner valve. Additionally, pilot-operated check valves lock the pitch rams until pressure is applied from the pitch valve.

Another significant patent is the bucket pivot assembly, which is designed for mounting a bucket to a loader arm. This assembly utilizes shouldered pin adapters that are tack welded in the bucket brackets. This innovative design allows for easy replacement of the pin adapter when wear occurs, ensuring longevity and reliability. The pin adapters are strategically located to provide an additional seal between the loader arm and the pivot pin, enhancing the overall performance of the machinery.

Career Highlights

Lee F. Kramer has built a successful career at Dresser Industries, Inc., where he has applied his expertise in hydraulic systems. His innovative designs have contributed to the advancement of machinery used in various industrial applications.

Collaborations

Throughout his career, Kramer has collaborated with notable colleagues, including Robert B. Christensen and Ronald K. Schantz. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies in hydraulic control systems.

Conclusion

Lee F. Kramer is a distinguished inventor whose work in hydraulic control systems has made a lasting impact on the industry. His innovative patents and collaborative efforts continue to influence the design and functionality of heavy machinery.