Jarmo Leppanen

Title: Innovations by Jarmo Leppanen

Introduction

Jarmo Leppanen is a notable inventor based in Ylojarvi, Finland. He has made significant contributions to the field of engineering, particularly in the areas of wire storage and concrete feeding methods. With a total of 9 patents to his name, Leppanen's work showcases his innovative spirit and technical expertise.

Latest Patents

One of Leppanen's latest patents is a device for storing a wire in a wire bolting means. This device comprises a reel that supports a ring-shaped wire coil and a supporter on which the reel is mounted for rotation. To prevent unintentional unwinding of the coil and simplify the replacement of the device, the reel is designed as an essentially closed housing that encloses the wire coil and features a central opening for drawing out the wire. The housing and supporter are preferably formed as a separate, replaceable cassette fastened on the carrier of the bolting means.

Another significant patent involves a method and device for feeding concrete into a drill hole in the concrete bolting of a rock. In this method, a feeding hose is pushed into the hole while concrete is pumped into the hole through the feeding hose as it is drawn outwards. To ensure proper filling of the hole, the amount of concrete pumped into the feeding hose is greater than the theoretical amount needed for filling an unbroken hole when the hose is withdrawn that distance. The device designed for this method includes a primary pump that pumps concrete into a piston-type metering pump, which then delivers the metered amount of concrete into the feeding hose in proportion to the hose's withdrawal.

Career Highlights

Leppanen is associated with Oy Tampella Ab, where he continues to develop innovative solutions in engineering. His work has not only advanced the technical capabilities of his company but has also contributed to the broader field of construction and engineering.

Collaborations

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Conclusion

Jarmo Leppanen's inventive contributions, particularly in wire storage and concrete feeding methods, highlight his role as a significant figure in engineering innovation. His patents reflect a commitment to improving practical applications in construction and bolting technologies.