Back to results
US 6,170,771 B2Granted
Rock crusher
AssigneeHRW Limited Partnership
InventorJohn Healey
Life of this patent
Estimating the term…
Abstract
A device and method are set forth for crushing rocks. The device includes first and second rotors defining therebetween a nip for crushing rocks. A feed opening is provided to feed rock between the rotors to the nip. Angular shoes on the second rotor direct rocks between the openings. In a further aspect, the second rotor may have a non-circular perimeter such as a pentagon or the like.
Claims13
A device for crushing material comprising:
- a housing having a feed port to receive into the housing material to be crushed and a discharge for crushed material;
- a first rotor disposed in the housing having a first axis and defining a first crushing surface;
- a second rotor disposed in the housing having a second axis, said second rotor including an axial cavity to pass material, a face defining a second crushing surface, said second crushing surface being polygonal to have a variable radial distance from said second axis and adapted to be spaced from the first crushing surface to define a polygonal, circumferential nip for crushing material between said first and second crushing surfaces;
- and
- means for rotating the first rotor to centrifugally direct material between said nip for crushing thereof, said crushed material discharged from said housing discharge.
2 more elements
A device for crushing material comprising:
- a housing having a feed port to receive into the housing material to be crushed and a discharge for crushed material;
- a first rotor disposed in the housing having a first axis and defining a first crushing surface;
- a second rotor disposed in the housing having a second axis, said second rotor including an axial cavity to pass material into a space between said first and second rotors, a plurality of planar crushing plates removably secured to the second rotor in an adjoining relationship face to define a polygonal second crushing surface, said second crushing surface spaced from the first crushing surface to define a circumferential nip for crushing material between said first and second crushing surfaces;
- and
- means for rotating the first rotor to centrifugally direct material between said nip for crushing thereof, said crushed material discharged from said housing discharge.
2 more elements
A device for crushing material comprising:
- a housing having a feed port to receive into the housing material to be crushed and a discharge for crushed material;
- a first rotor disposed in the housing having a first axis and defining a first crushing surface;
- a second rotor disposed in the housing having a second axis, said second rotor including an axial cavity to pass material, a face defining a second crushing surface, said second crushing surface having a polygonal shape selected from a group consisting of triangular, rectangular, pentagonal and hexagonal to have a variable radial distance from said second axis and adapted to be spaced from the first crushing surface to define a circumferential nip for crushing material between said first and second crushing surfaces;
- and
- means for rotating the first rotor to direct material between said nip for crushing thereof, said crushed material discharged from said housing discharge.
2 more elements
Dependencies are inferred from the claim text.