Fluid reaction surfaces (i.e. – impellers) – Specific working member mount – Blade received in well or slot
Reexamination Certificate
2006-05-09
2006-05-09
Nguyen, Ninh H. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Specific working member mount
Blade received in well or slot
Reexamination Certificate
active
07040866
ABSTRACT:
The system retains a plate against a disk presenting in its radial face an annular recess defined by a plurality of walls, one of which is formed by a face of a flange, said plate presenting an annular base pressing against the radially outer wall of the recess and a root which extends from the base into the recess, said system including a split annular retaining ring disposed in the recess. In characteristic manner, said flange presents a top end of crenellated outline provided with at least one notch, said root is provided with a front rim of crenellated outline, having at least one mortise, and a rear rim between which rims there is formed an annular groove for receiving the ring which presents an axial tenon suitable for penetrating into said notch and into said mortise.
REFERENCES:
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patent: 4803893 (1989-02-01), Bachinski
patent: 5018943 (1991-05-01), Corsmeier et al.
patent: 5330324 (1994-07-01), Agram et al.
patent: 5472313 (1995-12-01), Quinones et al.
patent: 6106234 (2000-08-01), Gabbitas
patent: 2002/0018719 (2002-02-01), Arilla et al.
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