Fluid reaction surfaces (i.e. – impellers) – Having frangible or fusible part or connection
Reexamination Certificate
2005-03-10
2009-08-04
Edgar, Richard (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Having frangible or fusible part or connection
C416S061000, C073S112010
Reexamination Certificate
active
07568886
ABSTRACT:
The invention relates to a rotor of a non-positive-displacement machine which, when exposed, has an inspection area which is visible from the outside and inside of which a comparatively uncritical load occurs during the operation of the non-positive-displacement machine. In addition, the rotor, when exposed, has a monitoring area which is not visible from the outside and inside of which a comparatively critical load occurs during the operation of the non-positive-displacement machine. The rotor also has a weak point provided in the form of a predetermined breaking point having the shape of a notch and located in inspection area. In order to improve the reliability of the non-positive-displacement machine, a recess, particularly a release bore hole, is provided for delimiting the weak point, and the uncritical defect can terminate inside said release bore hole.
REFERENCES:
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patent: 2002/0019708 (2002-02-01), Pross
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Hohmann Christian
Schaal Reimar
Setz Werner
Edgar Richard
Siemens Aktiengesellschaft
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