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A rotary joint for a tyre inflation unit is disclosed. This design uses brush seals and has the advantage over conventional solutions that no separate pressure control channel for the pressurization of the seal is required.
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This patent describes a seal arrangement for the pin of the pivot joints of the beams for a bucket loader or other hydraulic earthmoving equipment. The seal for the end of the pin has a pair of
A BP Chemicals initiative to minimise fugitive emissions from valves on its plants worldwide looks as though it will save the company more than ยฃ1 million per year in production costs. BP Chemicals initiated the drive for better valve performance after measuring emissions from valve stems on plants
This rotary valve design for internal combustion engines is claimed to overcome the problems of valve area, variable timing potential, sealing and lubricant consumption associated with previous designs.