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2. Saw chain - Wikipedia

   en.wikipedia.org/wiki/Saw_chain

   The saw chain, or cutting chain, is a key component of a chainsaw. It consists of steel links held together by rivets , and superficially resembles the bicycle -style roller chain , although it is closer in design to a leaf chain.

3. Chainsaw - Wikipedia

   en.wikipedia.org/wiki/Chainsaw

   Lack of chain oil, or using an oil of incorrect viscosity, is a common source of damage to chainsaws, and tends to lead to rapid wear of the bar, or the chain seizing or coming off the bar. In addition to being quite thick, chain oil is particularly sticky (due to "tackifier" additives) to reduce the amount thrown off the chain. Although motor ...

4. Bar-link chain - Wikipedia

   en.wikipedia.org/wiki/Bar-link_chain

   Top view of a segment from a "bar-link" bicycle chain. Bicycle chain of the bar-link or block chain type on safety bicycle in a vintage (c1900) photograph. A bar-link chain, also called a block-and-bar chain or a block chain, is a mechanical drive chain. It is composed of side plates, where each plate straddles one end of a block and is ...

5. Four-bar linkage - Wikipedia

   en.wikipedia.org/wiki/Four-bar_linkage

   In the study of mechanisms, a four-bar linkage, also called a four-bar, is the simplest closed-chain movable linkage. It consists of four bodies, called bars or links, connected in a loop by four joints. Generally, the joints are configured so the links move in parallel planes, and the assembly is called a planar four-bar linkage. Spherical and ...

6. List of Doraemon (1979 TV series) episodes - Wikipedia

   en.wikipedia.org/wiki/List_of_Doraemon_(1979_TV...

   4-18 I Got 100%, For Once in My Life... 一生に一度は百点を Doraemon lends Nobita a computer pencil which writes all the answers to his homework. Gian steals it and uses it in an exam to get 100% but his father thinks he is cheating and beats him. Suneo and Gian now Nobita's friends. Remade in 1992 as "Computer Pencil". 16 4-19 Swapping ...

7. Costco - Wikipedia

   en.wikipedia.org/wiki/Costco

   Costco membership card from Iceland. Costco's earliest predecessor, Price Club, opened its first store on July 12, 1976, on Morena Boulevard in San Diego, California.It was founded three months earlier by Sol Price and his son, Robert, following a dispute with the new owners of FedMart, Price's previous membership-only discount store. [16]