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| Number | Title | Issue Date |
| 7226010 | Method and apparatus for solid fuel pulverizing operation and maintenance optimization A system for use with a roll bowl type mill for the pulverizing of solid fuels such as coal. The system includes hardware in the form of sensors and other components and software to among other things monitor the operating condition of the mill's moving parts and pr... | 06/05/2007 |
| 7048214 | Gyratory crusher with hydrostatic bearings It has been said that the wheel is the greatest invention of all time; when horses or oxen pulled wagons, dirt roads or no roads sufficed, but the wheels of modern transportation require paved roads for cars and trucks, concrete air strips for airplanes, ballast for... | 05/23/2006 |
| 7036758 | Cone crusher A crushing chamber is formed between a concave liner and a mantle liner. The concave liner has a first area surface having a length of T to √2T; a second and a third area surface; which surfaces are gradually inclined from the side of the inlet for the crushing ch... | 05/02/2006 |
| 6604699 | Method for securing a gyratory crusher mantle The head nut assembly for gyratory crusher which includes a shaft having a lower portion, a tapered middle portion and a threaded upper portion. The threaded upper portion extends above the tapered portion. A mantle encompasses the middle tapered portion ... | 08/12/2003 |
| 6581860 | Crusher A crusher comprises a main shaft a portion of which is disposed in a bore of a rotatable eccentric shaft, the main shaft (1) having a central axis that is inclined with respect to the axis of rotation of the eccentric shaft, and a first crushing head atta... | 06/24/2003 |
| 6446892 | Rock crushing machine The machine is comprised of a main body (32), a bonnet (14) which rests on the upper frame of the main body (32) and a concave holder (66) threadably inserted into the bonnet (14). The bonnet (14) is maintained in intimate contact with the main body (32) ... | 09/10/2002 |
| 6347758 | Strain relief main shaft An improved main shaft and assembly for a coal pulverizer having a circumferential groove at a predetermined location on the main shaft and in the yoke bushing to provide improved fretting resistance to reduce the occurrence of main shaft failure.... | 02/19/2002 |
| 6299083 | Burning ring and head nut connection for gyratory crusher mantle The head nut assembly for gyratory crusher which includes a shaft having a lower portion, a tapered middle portion and a threaded upper portion. The threaded upper portion extends above the tapered portion. A mantle encompasses the middle tapered portion ... | 10/09/2001 |
| 6036129 | Eccentric cone crusher having multiple counterweights An eccentric cone crusher having multiple counterweights. More particularly, the present invention provides a cone crusher including a frame, a crusher head for eccentric rotation about an axis, an eccentric member supporting the crusher head and having a... | 03/14/2000 |
| 6000648 | Cone crusher having integral socket and main frame A cone crusher having a crusher head assembly including a crusher head having a cone-shaped surface and an underside opposite the cone-shaped surface, the underside having an annular socket engagement surface, a one-piece frame including a peripheral port... | 12/14/1999 |
| 5996916 | Cone crusher having positive head hold-down mechanism A gyratory crusher having a positive head hold-down mechanism. The crusher includes a frame structure; a first mounting arrangement including a pair of taper bearings for rotatably mounting an eccentric member to the frame structure about a vertically ori... | 12/07/1999 |
| 5931394 | Anti-spin mechanism for gyratory crusher A gyratory crusher includes an anti-spin mechanism which is coupled to a lower end of a main shaft of the crusher and which prevents the main shaft and associated crushing head from spinning when the crusher is not subject to a crushing load. The anti-spi... | 08/03/1999 |
| 5875981 | Gyratory crusher having tramp iron relief system A gyratory crusher includes a frame, a bonnet, a gyratory crusher head, supported by the frame and being spaced relative to the bonnet such that a crushing chamber is formed therebetween, and a hydraulic channel formed integrally within the frame. First a... | 03/02/1999 |
| 5850978 | Self tightening mantle retention assembly for gyratory conical crushers A self tightening mantle retention assembly for a conical crusher. The self tightening assembly includes a locking bolt or nut provided with external threads for engaging in internally threaded bore in the head of the crusher. The locking bolt is provided... | 12/22/1998 |
| 5820045 | Conical Crusher having a single piece outer crushing member A conical crusher having a rigidly supported outer frustoconically shaped crushing member and an inner conical crushing member supported on a wobble mechanism which is in turn supported by air bellows. The air pressure in the air bellows is regulated to a... | 10/13/1998 |
| 5799886 | Gyratory crusher having thermal relief system A gyratory crusher for crushing material having a frame with a lower frame portion; a crusher head; a mounting mechanism for pivotally and gyrationally mounting the crusher head: and a thermal relief system for operably transferring thermal energy from th... | 09/01/1998 |
| 5738288 | Conical crusher having a single piece inner crushing member A conical crusher having a rigidly supported outer frustoconically shaped crushing member and an inner conical crushing member supported on a wobble mechanism which is in turn supported by air bellows. The air pressure in the air bellows is regulated to a... | 04/14/1998 |
| 5732896 | Anti-spin mechanism for gyratory crusher A gyratory crusher includes an anti-spin mechanism which couples a lower end of the eccentric shaft of the crusher to the stationary frame of the crusher so as to prevent the eccentric shaft and associated crushing head from spinning when the crusher is n... | 03/31/1998 |
| 5732895 | Conical crusher having fluid bellow support assemblies A conical crusher having a rigidly supported outer frustoconically shaped crushing member and an inner conical crushing member supported on a wobble mechanism which is in turn supported by air bellows. The air pressure in the air bellows is regulated to a... | 03/31/1998 |
| 5718390 | Gyratory crusher A gyratory crusher includes a flexible dust seal having an outer edge attached to a cone head of the crusher and to an outer of a ball-bearing seal, an inner race of which is attached to a mounting arrangement for rotationally mounting an eccentric member... | 02/17/1998 |
| 5718391 | Gyratory crusher having dynamically adjustable stroke A gyratory crusher includes a frame structure; an eccentric member rotatably mounted to the frame structure about a first axis; a main shaft rotatably mounted to the eccentric member about a second axis angularly offset from the first axis; a crusher head... | 02/17/1998 |
| 5570850 | Crusher The invention is a crusher having a fixed crusher member and a vertically reciprocating crusher member. Reciprocation of the crusher member is achieved by a pivoting arm located beneath the crusher member which is preferably driven by a toggle mechanism l... | 11/05/1996 |
| 5464165 | Cone crusher having inclined hold-down cylinders A cone crusher having a lower frame assembly and upper bowl assembly is provided with hold-down cylinders arranged in pairs which are oppositely inclined to counteract a rotational impact forces imparted to the upper bowl assembly. Additionally, the hold-... | 11/07/1995 |
| 5312053 | Cone crusher with adjustable stroke A gyratory crusher includes a bowl assembly with a concave crushing surface and a crusher head of conical shape which extends into the concave portion of the bowl assembly. A central crusher axis extends centrally through the bowl assembly. The crusher he... | 05/17/1994 |
| 5190229 | Rolling bearing arrangement for a conical crusher A rolling bearing arrangement for a conical crusher in which a vertically arranged driving element is rotatably mounted on a base and a crushing cone is mounted inclined with respect to the vertical on the upper end of the driving element so as to be free... | 03/02/1993 |
| 5163213 | Hydraulically retrofitting mechanically adjustable cone crushers A method for retrofitting a mechanically adjustable cone crusher which comprises removing each adjustment cap screw or locking post of the bowl asssembly and placing a hydraulic cylinder which contains a center hole under the head of each adjustment cap s... | 11/17/1992 |
| 5152468 | Gyratory crusher The invention relates to a gyratory crusher in which a piston surrounds a wabbler shaft or eccentric sleeve and the radial forces of the spindle shaft are transmitted to the frame of the crusher through the piston.... | 10/06/1992 |
| 5115991 | Gyratory cone crusher The present invention relates to a gyratory cone crusher having an eccentric member mounted within a lower main frame for rotational motion relative thereto. Disposed within the eccentric member is a crusher head assembly defining a first crushing surface... | 05/26/1992 |
| 4976470 | Cone crusher An improved cone crusher wherein raw material is crushed between a gyrating mantle and a bowl liner above the mantle. Space between the mantle and the bowl liner is adjusted by moving the bowl liner upward, and the adjusting movement is automatically perf... | 12/11/1990 |
| 4919349 | Dust seal for gyratory rock crushers A gyratory rock crusher having a base seal and a cone seal. The cone seal has a recess for receiving a projecting portion of the base seal, and these portions have cooperating upper and lower spherical surfaces arranged for relative parallel movement upon... | 04/24/1990 |
| 4919348 | Dust seal for gyratory rock crushers A first annular seal member on the base of a gyratory rock crusher is associated with a second annular seal member on the crusher cone. These two seal members have cooperating spherical surfaces which rub slidably together in the gyratory movements. An ai... | 04/24/1990 |
| 4892257 | Cone crusher comprising eccentrically driven crushing cone and a means for preventing the entrainment of the crushing cone during no-load operation An improved cone crusher with an eccentrically driven crushing cone, crushing jacket outside of the cone defining a crushing nip therebetween, the cone is driven in an oscillating manner tilting about its vertical axis and is connected to a driven through... | 01/09/1990 |
| 4844362 | Cone crusher A cone crusher includes outer and inner cones (2, 3) with a discharge slot (5) between them, a shaft (7) of the inner cone (3), a means for adjusting the size of the discharge slot (5) and a means for imparting gyrations to the inner cone (3). The means f... | 07/04/1989 |
| 4787563 | Bearing system for cone type crusher A cone type crusher which has a crushing chamber constituted by a crushing head assembly and a conical cap ring securely fitted in a fixed frame, the crusher including an eccentric drive cylinder for supportng therein and driving a vertical main shaft of ... | 11/29/1988 |
| 4681269 | Construction of bearing for cone crusher A novel bearing construction for use in a cone crusher and the like in which an eccentric rotating in a frame and a crushing head gyrating in the inner periphery of the eccentric are movable up and down by hydraulic pressure. A cylindrical socket inserted... | 07/21/1987 |
| 4679741 | Crusher with rotary plates A crusher with rotary crusher plates and a vertical main axis has plates (1,2) disposed one above the other and spaced apart to form between the plates an annular slot (4) having radial, outwardly converging crushing surfaces (1', 2'). Said plates are rot... | 07/14/1987 |
| 4655405 | Inertia cone crusher An inertia cone crusher includes a housing with an outer cone secured therein and an inner cone mounted concentrically with the outer cone on a spherical support. A bearing bush carrying an unbalanced mass member is installed on the inner cone shaft to en... | 04/07/1987 |
| 4602746 | Cone crusher labyrinth seal For cone crushers comprising an eccentrically-driven crushing cone, it is necessary to provide a labyrinth seal between the inwardly disposed eccentric drive and the crushing cone, the upper seal half thereof being connected to the crushing cone and the l... | 07/29/1986 |
| 4589600 | Cone crusher A gyratory cone crusher having an eccentric member mounted for rotary motion on a spindle, the eccentric member having a lower skirt surrounding the spindle and an upper cylindrical portion extending upward from the spindle, the eccentric member being sup... | 05/20/1986 |
| 4586664 | Bearing supporting system for cone crusher A bearing supporting system for cone crushers of the type which has a head center securely mounted on an upper portion of a main shaft for mounting a mantle thereon and has the main shaft supported by the eccentric drive shaft in radial direction, the sup... | 05/06/1986 |
