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US 9,975,265 B2Granted
Method for manufacturing, chain sub-units and machine
AssigneeCOSBERG S.p.A.
InventorGianluigi Carlo Viscardi
Life of this patent
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Abstract
A method of manufacturing a chain (1), such as a cutting chain for a chain saw, includes providing or pre-assembling a plurality of chain sub-units (10). At least a sufficient property and/or a sufficient functionality of each chain sub-unit (10) are tested. A head-to-tail coupling is combined with the plurality of chain sub-units (10) provided with the sufficient property and/or sufficient functionality of the testing step to make a chain (1) of a predefined length.
Claims13
Method of manufacturing a chain, comprising the steps of:
- a) providing or pre-assembling a plurality of chain sub-units, each sub-unit being made by the sub-steps of:
- providing a plurality of drive links and connection links, each of said links identifying at least a pair of through holes;
- placing the drive links alongside each other in a chain-extension direction;
- for each pair of adjacent drive links, arranging in a bridging manner and on both sides a pair of connection links so that lumina of the through holes of the connection links arranged in a bridging manner are at least partially aligned with lumina of the through holes of the drive links;
- constraining the drive links and the connection links in the chain-extension direction, by a plurality of pivot pins housed in the through holes with the partially aligned lumina, allowing rotation of the links around axes identified by said pins;
- b) testing at least a sufficient property and/or a sufficient functionality of each chain sub-unit;
- c) combining with a head-to-tail coupling the plurality of chain sub-units provided with the sufficient property and/or sufficient functionality of step b), to make a chain of a predefined length.
4 more elements
Dependencies are inferred from the claim text.