Leonard C Graham

Title: Leonard C Graham: Innovator in Mold Technology

Introduction

Leonard C Graham is a notable inventor based in Cave Creek, AZ (US). He has made significant contributions to the field of mold technology, holding 2 patents that showcase his innovative approach to solving industry challenges.

Latest Patents

Graham's latest patents include a "Method and apparatus to reduce galling in a mold device." This invention discloses an apparatus and method for removing threaded, molded articles from an injection mold. A cam system and linear drive/following gear mechanism engage a finely resolved retraction of a threaded mold core, under substantially full mold clamp pressure, prior to rotational disengagement of the core from the molded article. The invention also describes a system for the reduction of galling that may otherwise occur when mold components experience relative rotation with respect to each other. Moreover, it outlines an apparatus and method for substantially reducing periodic maintenance checks and interruptions in production.

Another significant patent is the "Tapered mold runner block." This invention utilizes a tapered running block and corresponding tapered cavity blocks in a mold for fabricating relatively thin, flat plastic cards, such as those used for pre-paid telephone cards. The mating surfaces of the runner block and the cavity block are angularly tapered, ensuring that metal-to-metal contact occurs between the runner block and the cavity block when the mold is in the plastic injection position. As soon as relative movement of the runner block and the cavity block is effected to part the blocks and separate the cards from the runners, the tapered surfaces move away from one another without any sliding contact, thereby significantly reducing wear in the mold.

Career Highlights

Graham is currently associated with The Tech Group, Inc., where he continues to innovate and develop new technologies in the mold industry. His work has had a lasting impact on the efficiency and effectiveness of mold design and production.

Collaborations

Graham collaborates with various professionals in his field, including his coworker, James D Wicklund. Their combined expertise contributes to the advancement of mold technology and the development of innovative solutions.

Conclusion

Leonard C Graham is a distinguished inventor whose work in mold technology has led to significant advancements in the industry. His patents reflect a commitment to innovation and efficiency, making him a valuable asset to The Tech Group, Inc. and the broader field of manufacturing.