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US 6,641,068 B2Granted
Jaw for a jaw crusher
AssigneeCedarapids, Inc.
InventorDavid A. Ostergaard
Life of this patent
Estimating the term…
Abstract
A jaw crusher having one or more improved elliptical jaw members is disclosed. The jaw crusher includes a frame, a stationary jaw, and a moveable jaw. The stationary jaw is mounted to the frame and includes a top edge, a bottom edge, and an interconnecting face extending between the top edge and the bottom edge. The moveable jaw, which is shiftably mounted to the frame and is moveable toward and away from the stationary jaw, includes a top edge, a bottom edge, and an interconnecting face extending between the top edge and the bottom edge. The face of at least one of the stationary jaw and the moveable jaw includes an elliptical profile.
Claims32
A jaw crusher, comprising:
- a frame;
- a stationary jaw, the stationary jaw mounted to the frame and having a top edge, a bottom edge, and an interconnecting face extending between the top edge and the bottom edge;
- and
- a moveable jaw, the moveable jaw shiftably mounted to the frame and being moveable toward and away from the stationary jaw, the moveable jaw having a top edge, a bottom edge, and an interconnecting face extending between the top edge and the bottom edge;
- wherein the face of at least one of the stationary jaw and the moveable jaw includes a curved profile;
- and
- wherein the curved profile is elliptical.
4 more elements
A jaw member for mounting to the frame of a jaw crusher, the jaw comprising:
- a rear surface adapted for mounting to the frame;
- a top edge;
- a bottom edge;
- and
- an interconnecting face extending between the top edge and the bottom edge;
- wherein the face of the jaw member includes a curved profile;
- and
- wherein the curved profile is elliptical.
5 more elements
A jaw member for mounting to the frame of a jaw crusher, the jaw comprising:
- mounting means for mounting the jaw member to the frame;
- a top edge;
- a bottom edge;
- and
- an interconnecting face extending between the top edge and the bottom edge;
- a plurality of teeth formed on the face and extending between the top edge and the bottom edge, each of the teeth including a peak, the peak of each of the teeth spaced from any adjacent teeth by a valley;
- wherein the peak of each of the teeth generally corresponds to a curved profile;
- and
- wherein the curved profile is elliptical.
6 more elements
A jaw crusher, comprising:
- a frame;
- a stationary jaw, the stationary jaw mounted to the frame and having a top edge, a bottom edge, and an interconnecting face extending between the top edge and the bottom edge;
- and
- a moveable jaw, the moveable jaw shiftably mounted to the frame and being moveable toward and away from the stationary jaw, the moveable jaw having a top edge, a bottom edge, and an interconnecting face extending between the top edge and the bottom edge;
- wherein the face of at least one of the stationary jaw and the moveable jaw includes a plurality of spaced apart teeth, each of the teeth having a peak following a curved profile;
- and
- wherein the curved profile is elliptical.
4 more elements
A jaw crusher comprising:
- a frame;
- a stationary jaw, the stationary jaw mounted to the frame and having a top edge, a bottom edge, and an interconnecting face extending between the top edge and the bottom edge;
- and
- a moveable jaw, the moveable jaw mounted to the frame so as to be moveable toward and away from the stationary jaw, the moveable jaw having a top edge, a bottom edge, and an interconnecting face extending between the top edge and the bottom edge;
- a crushing chamber defined between the stationary jaw and the moveable jaw, the crushing chamber having a lower portion, an upper portion;
- a nip angle defined between the stationary jaw and the moveable jaw;
- and
- means defined by the surface of at least one of the stationary jaw and the moveable jaw for varying the nip angle between a first nip angle toward the lower portion of the crushing chamber and a second nip angle toward the upper portion of the crushing chamber, the second nip angle greater than the first nip angle, the means varying the nip angle according to a curved profile;
- wherein the curved profile is elliptical.
6 more elements
A jaw crusher, comprising:
- a frame;
- a stationary jaw, the stationary jaw mounted to the frame and having a top edge, a bottom edge, and an interconnecting face extending between the top edge and the bottom edge;
- and
- a moveable jaw, the moveable jaw shiftably mounted to the frame and being moveable toward and away from the stationary jaw, the moveable jaw having a top edge, a bottom edge, and an interconnecting face extending between the top edge and the bottom edge;
- wherein the face of at least one of the stationary jaw and the moveable jaw includes a curved profile defined by AX2+BY2=C;
- wherein (X,Y) is a coordinate of a point on the face such that X is a distance from the face to a vertical axis of the jaw, and Y is a distance from the face to a horizontal axis of the jaw, and wherein A and B are constants having values not equal to zero and not equal to each other, and C is a constant having a value not equal to zero.
3 more elements
Dependencies are inferred from the claim text.