Transmission and compressor or vacuum pump provided with such a transmission
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United States of America Patent
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Apr 18, 2023
Grant Date -
Apr 16, 2020
app pub date -
Mar 13, 2018
filing date -
May 4, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A transmission between a drive shaft and a driven shaft comprises a housing and at least a driven gearwheel that is mounted on the driven shaft and a drive gearwheel that is mounted on a drive shaft. The housing comprises two separated chambers, i.e. a first chamber that is connected to the driven shaft and a second chamber which is separate from the first chamber, whereby the first chamber is connected via a channel with the second chamber, whereby around the drive gearwheel or driven gearwheel the second chamber is formed, whereby the form of the second chamber is such that when the gearwheel in question rotates, a gas flow is created around this gearwheel which causes a negative pressure in the channel by the venturi effect.
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