Sakari Pinomaki

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Sakari Pinomaki is a Finnish mechanical and hydraulic systems engineer who pioneered the mechanized forestry industry and founded the first purpose-built forest machine manufacturing firm in 1963 in the town of Ylöjarvi, Finland.^{[citation needed]}

[edit] History

Sakari Pinomaki's first company, PIKA Forest Machines, is credited with designing the first self propelled tree length timber processor, the PIKA Model 60, in 1968, and the first fully mobile timber "harvester", the PIKA Model 75, in 1974. ( A harvester differs from a tree length processor in that a harvester grips, fells, de-limbs and sections the tree, while a processor simply de-limbs a tree that has been felled by chain saws and dragged to the processor.) His designs and innovations have been subsequently copied by at least five other major manufacturers of heavy timber equipment, including Timberjack, Valmet and Ponsse, and were instrumental in developing the "Scandinavian" system of timber harvesting, which is far more sustainable and nature conserving than the methods employed up till the mid 20th century.

One of the most significant of PIKA's inventions has been the Paralcon Hydraulic valve system that can be used on any twin boom extending-retracting crane. This valve uses return oil flow pressure to power the extension piston, and flow oil pressure to power the retraction movement of the crane, as opposed to standard configurations that use additional pumps to power these crane movements. The result is that far less motor torque is necessary to operate the crane, which consumes far less fuel; this in turn save operators money and reduces CO2 emissions for the machinery in use.

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