Maine Patent of the Month – March 2024

National Attachments Incorporated has provided high quality attachments for manufacturing companies worldwide for 35 years. With this extensive history, the company has made a name for themselves as a leader in the industry. The company has recently been granted a patent for their stump harvester designed to attach to excavators. 

A stump harvester is a tool that typically performs tasks such as excavating, ripping, and prying stumps from the ground as well as shearing and splitting the stump into pieces. Most existing stump harvesters are known to be limited in efficiency and longevity. National Attachments has designed an attachment with greater efficiency and capability.

At the heart of this invention lies a meticulously designed front jaw assembly pivotally coupled with a back jaw assembly. The front jaw assembly features a robust grubbing arm, boasting a front plate flanked by left and right side plates, each meticulously crafted for optimal performance. Meanwhile, the back jaw assembly houses a formidable knife arm, equipped with a jointed cutting blade sporting a dual-bevel cross-sectional geometry, ensuring precision and effectiveness in cutting operations.

What sets this multi-purpose tool apart is its adaptability and efficiency. With a front positive stop and a back positive stop strategically placed, this tool ensures precise alignment and secure closure, minimizing errors and maximizing productivity. The dual anvil, with its anvil channel perfectly aligned with the cutting edge, provides a stable platform for cutting operations, enhancing safety and accuracy.

The inclusion of a splitter fang and prying tines further expands the tool’s capabilities, allowing for a wider range of applications, from excavating tree stumps to manipulating various materials with ease. Whether it’s excavating, ripping, prying, or cutting, this tool excels in every aspect, making it an indispensable asset for any excavation project.

Are you developing new technology for an existing application? Did you know your development work could be eligible for the R&D Tax Credit and you can receive up to 14% back on your expenses? Even if your development isn’t successful your work may still qualify for R&D credits (i.e. you don’t need to have a patent to qualify). To find out more, please contact a Swanson Reed R&D Specialist today or check out our free online eligibility test.

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