Company Filing History:
Years Active: 1986-1988
Title: Innovations by Peter F. Grelle
Introduction
Peter F. Grelle is an accomplished inventor based in Edwardsville, IL (US). He has made significant contributions to the field of ammunition technology, holding a total of three patents. His innovative designs focus on improving the performance and efficiency of shotshells.
Latest Patents
One of Peter's latest patents is for an "Adjustable volume shot wad structure and method of assembling the same." This invention features an improved shot wad structure that includes a longer outer wad cup, a shorter inner wad cup, and a plastic wad insert. This design is particularly useful for shotshells containing hard shot pellets, such as steel or tungsten shot. The outer cup is made from a soft, low tensile strength material, allowing it to effectively seal combustion gases when the shotshell is fired. The inner cup, constructed from a tough, high tensile strength material, supports the shot column and withstands the compressive forces generated during shot acceleration. The foam wad insert allows for adjustable depths within the outer cup, accommodating various shot load sizes.
Another notable patent is for a "Plastic cartridge case." This invention presents an all-plastic cartridge case made entirely of polyethylene, featuring a hard-plastic rim and a soft-plastic glass-filled high-density polyethylene basewad. The basewad is designed to be stronger and tougher than the shotshell tube, while the rim is chemically dissimilar, ensuring a secure mechanical lock. The patent also includes a two-step method for molding the shell with a triple plastic head.
Career Highlights
Peter Grelle is currently employed at Olin Corporation, where he continues to innovate in the field of ammunition technology. His work has contributed to advancements in the design and functionality of shotshells, enhancing their performance and safety.
Collaborations
Peter has collaborated with notable coworkers, including Venkataramaraj S. Urs and Stephen J. Bilsbury. Their combined expertise has fostered a creative environment that encourages innovation and the development of new technologies.
Conclusion
Peter F. Grelle's contributions to ammunition technology through his patents demonstrate his commitment to innovation and improvement in the field. His work at Olin Corporation and collaborations with fellow inventors highlight the importance of teamwork in driving advancements in technology.