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US 4,363,631 AGranted
Structural arrangement for oxide ceramic shafts
AssigneeFeldmuhle Aktiengesellschaft
InventorGert Wloka
Life of this patent
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Abstract
The shaft of a glandless pump which is made of sintered oxide ceramics in order to resist chemical attack is formed with a projection upon which there is mounted a metal sleeve having a bottom in order to enable a tool, such as a screwdriver, to be applied against the shaft for rotating the shaft when unblocking the pump without causing damage to the ceramic material of the shaft.
Claims4
A shaft assembly for a glandless pump, particularly a circulating pump for heating installations, comprising:
- a shaft consisting essentially of oxide ceramic material and having a pair of ends;
- bearing means rotatively supporting said shaft intermediate said ends;
- a projection provided on said oxide ceramic shaft at at least one of said ends outside of said bearing means;
- a metal sleeve including a bottom part fixedly mounted on said projection of said shaft;
- and
- engaging means on said bottom part of said sleeve for enabling said sleeve to be engaged to effect rotation of said shaft.
3 more elements
Dependencies are inferred from the claim text.