|4245968||Lubricating system for pump and control valve therefor|
A vane air pump is used to selectively supply air under pressure to a tank or evacuate air from the tank. A control valve mounted on the pump has a housing with an air inlet area and an air outlet area. A spool rotatable in the housing to a first position...
|4116505||Bearing for a shaft of an open-end spinning rotor|
Open-end spinning machine apparatus is provided which includes a spinning shaft with a spinning rotor at one end and a driving whorl at the other. A bearing assembly is provided including two sets of roller bearings spaced axially from one another and in ...