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US 5,429,581 AGranted
Wear-resistant tile surfacing for a centrifuge conveyor
AssigneeDorr-Oliver Incorporated
InventorsRichard R. Michaud, Chie-Ying Lee
Life of this patent
Estimating the term…
Abstract
A hard surfaced screw conveyor comprising a helical metal blade mounted for rotation about a longitudinal axis of the helix and radially extending to an end surface, the blade defining at least one female formation therein having a substantially dovetail shape and a longitudinal axis substantially perpendicular to the blade, and at least one wear-resistant member secured to the blade and having a portion radially extending beyond the end surface. The wear-resistant member defines a male formation that has a substantially dovetail shape and which is disposed within the female formation. The male and female formations may also be triangular, square, circular, or rectangular in shape.
Claims20
A hard surfaced screw conveyor, comprising:
- a helical metal blade mounted for rotation about a longitudinal axis of the helix and radially extending to an end surface, said blade defining at least one female formation therein having a substantially dovetail shape and a longitudinal axis substantially perpendicular to said blade;
- and
- at least one wear-resistant member secured to said blade and having a portion radially extending beyond said end surface, said at least one wear-resistant member defining a male formation having a substantially dovetail shape and which is disposed within said at least one female formation.
A hard surfaced screw conveyor, comprising:
- a helical metal blade mounted for rotation about a longitudinal axis of the helix and radially extending to an end surface;
- at least one wear-resistant member on said blade and having a portion radially extending beyond said end surface;
- means securing said at least one wear-resistant member to said blade, said securing means comprising male and female formations on said at least one wear-resistant member and said blade, respectively, said female formation having a longitudinal axis substantially perpendicular to said blade, said male and female formations cooperating to preclude said at least one wear-resistant member from moving in a direction radial to the helix longitudinal axis or parallel to said blade;
- a backing plate attached to said male formation;
- a retaining plate rigidly attached to said blade;
- and
- means for removably fastening said backing plate to said retaining plate to retain said male formation within said female formation.
4 more elements
A hard surfaced screw conveyor, comprising:
- a helical metal blade mounted for rotation about a longitudinal axis of the helix and radially extending to an end surface;
- at least one wear-resistant member on said blade and having a portion radially extending beyond said end surface;
- and
- means securing said at least one wear-resistant member to said blade, said securing means comprising male and female formations on said at least one wear-resistant member and said blade, respectively, said female formation having a longitudinal axis substantially perpendicular to said blade, said male and female formations having a substantially dovetail shape, said male and female formations cooperating to preclude said at least one wear-resistant member from moving in a direction radial to said helix longitudinal axis or parallel to said blade.
1 more element
A hard surfaced screw conveyor, comprising:
- a helical metal blade mounted for rotation about a longitudinal axis of the helix and radially extending to an end surface, said blade defining at least one female formation therein having a substantially triangular shape and a longitudinal axis substantially perpendicular to said blade;
- and
- at least one wear-resistant member secured to said blade and having a portion radially extending beyond said end surface, said at least one wear-resistant member defining a male formation having a substantially triangular shape which is disposed within said at least one female formation.
A hard surfaced screw conveyor, comprising:
- a helical metal blade mounted for rotation about a longitudinal axis of the helix and radially extending to an end surface, said blade defining at least one female formation therein having a substantially square shape and a longitudinal axis substantially perpendicular to said blade;
- and
- at least one wear-resistant member secured to said blade and having a portion radially extending beyond said end surface, said at least one wear-resistant member defining a male formation having a substantially square shape which is disposed within said at least one female formation.
A hard surfaced screw conveyor, comprising:
- a helical metal blade mounted for rotation about a longitudinal axis of the helix and radially extending to an end surface, said blade defining at least one female formation therein having a substantially circular shape and a longitudinal axis substantially perpendicular to said blade;
- at least one wear-resistant member secured to said blade and having a portion radially extending beyond said end surface, said at least one wear-resistant member defining a male formation having a substantially circular shape which is disposed within said at least one female formation;
- a backing plate attached to said male formation;
- a retaining plate rigidly attached to said blade;
- and
- means for removably fastening said backing plate to said retaining plate to retain said male formation within said at least one female formation.
3 more elements
A hard surfaced screw conveyor, comprising:
- a helical metal blade mounted for rotation about a longitudinal axis of the helix and radially extending to an end surface, said blade defining at least one female formation therein having a substantially rectangular shape and a longitudinal axis substantially perpendicular to said blade;
- and
- at least one wear-resistant member secured to said blade and having a portion radially extending beyond said end surface, said at least one wear-resistant member defining a male formation having a substantially rectangular shape and which is disposed within said at least one female formation.
Dependencies are inferred from the claim text.