Rotary kinetic fluid motors or pumps – With lubricating – sealing – packing or bearing means having... – For shaft sealing – packing – lubricating or bearing means
Patent
1976-09-30
1979-08-21
Croyle, Carlton R.
Rotary kinetic fluid motors or pumps
With lubricating, sealing, packing or bearing means having...
For shaft sealing, packing, lubricating or bearing means
418503, 285136, 277173, 277216, F03B 1304
Patent
active
041652037
ABSTRACT:
A pressurized medium powered device has a motor of the external rotor type, both the stator and the rotor of the motor having registering channels which communicate with one another across an interstice. At least one annular groove is provided in at least one of the rotor and stator components of the motor at the interstice, and at least one annular sealing element, such as an O-ring or a slotted ring of rectangular cross-sectional configuration is received in the annular groove with axial and radial play and is pressed into sealing contact with the components, and into sliding contact with at least one of the components, by the pressure of the pessurized medium. An annular depression may be formed in the other component in registry with the annular groove, and the sealing element may be partly received in such depression. At least one of the surfaces which bound the interstice is very smooth, which can be obtained by fine machining, surface contacting, or providing a layer of synthetic plastic material on such surface.
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Latzina Kurt
Martin Hans
Wolf Richard
Croyle Carlton R.
Gluck Richard E.
Robert & Bosch GmbH
Striker Michael J.
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