Machine Design
The application of third type levers is found in

A pair of tongs
Handle of a hand pump
Hand wheel of a punching press
Lever of a loaded safety valve

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Machine Design
In hydrodynamic bearings

Do not require external supply of lubricant
The oil film is maintained by supplying oil under pressure
Grease is used for lubrication
The oil film pressure is generated only by the rotation of the journal

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