SCREW OR WOOD SCREW HEAD Russian patent published in 1994 - IPC

Abstract RU 2010115 C1

FIELD: mechanical engineering. SUBSTANCE: head is made in the form of a ball segment with odd number of grooves reducing in depth from the bearing end to the tip. One side of the grooves is made straight, and the other one is tapered to provide rotation of the screw or the wood screw only in one direction. EFFECT: improve structure. 3 dwg

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RU 2 010 115 C1

Authors

Kazachkov Evgenij Mikhajlovich

Kazachkov Mikhail Vasil'Evich

Dates

1994-03-30—Published

1991-05-05—Filed