Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part – Labyrinth seal
Reexamination Certificate
2006-11-15
2009-10-06
Nguyen, Ninh H (Department: 3745)
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
Labyrinth seal
C415S230000, C156S062200, C219S121660, C219S121850
Reexamination Certificate
active
07597538
ABSTRACT:
In the method, a support is provided that presents a base for an annular wiper, and a wiper is built up that presents height that varies around its circumference, by forming a plurality of projecting portions by performing following successive steps:a laser source connected to an optical head focused on a point on the top surface of the base is activated, as is a source of powder connected to the spray nozzle, thereby forming a localized melt at said point, into which the powder is injected, thus forming a localized region of extra thickness; andthe optical head and the nozzle are aimed at another point adjacent to said region of extra thickness and the method returns to the preceding step until the layer of material is completed in the angular sector in question.
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Mons Claude Marcel
Vigneau Joël Olivier Alfred Abel
Nguyen Ninh H
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
SNECMA
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