Patent US919660A successfully refreshed from Google Patents.
Patent US3640475A successfully refreshed from Google Patents.
US3640475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for breaking up lumpy material
Assignee: Hitachi Zosen Inova Steinmueller GmbH
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Filing: 1969-04-01
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Granted: 1972-02-08
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Expires: 1989-04-01
Abstract
Abstract Pulverizing equipment including a disc rotating on a vertical axis and having an inner row of impact elements thereon, which first engage the material and break it up and accelerate it radially outwardly toward an outer row of impact elements on the disc which cooperate with a surrounding stationary row of impact elements to complete the breaking up of the material. A housing surrounds the disc and has outlet means at the periphery of the disc for the withdrawal of pulverized material. A blower beneath the disc may supply air to the region of the periphery of the disc to assist in the withdrawal of the pulverized material from the housing.
Inventors
- 👤 Richard Jung
- 👤 Horst Lenkewitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:39
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/14; B02C13/18; B02C13/1807; B02C13/1814
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
189 words
In an impact pulverizer: a housing defining a closed chamber, disc means rotatable on a vertical axis in said chamber, a radially inner and a radially outer circumferential row of spaced apart impact elements on said disc means and upstanding therefrom, feeding means for feeding material to be pulverized vertically downwardly into said chamber to said radially inner row of impact elements for preliminary crushing of said material thereby outwardly toward said radially outer row of impact elements, a further circumferential row of spaced apart impact elements concentric with and adjacent to said radially outer row of impact elements and carried by said housing, said further row of impact elements cooperating with said radially outer row of impact elements to perform the final pulverizing of said material in said pulverizer, said disc means comprising a smaller central disc having peripheral notches therein which widen out in the radially inward direction, said radially inner row of impact elements having foot portions thereon fitting said notches and being adapted for insertion into the notches in the axial direction, and a clamp disc overlying said notches and retaining said impact elements therein.
Claim 2
Dependent Claim
189 words
In an impact pulverizer: a housing defining a closed chamber, disc means rotatable on a vertical axis in said chamber, a radially inner and a radially outer circumferential row of spaced apart impact elements on said disc means and upstanding therefrom, feeding means for feeding material to be pulverized vertically downwardly into said chamber to said radially inner row of impact elements for preliminary crushing of said material thereby outwardly toward said radially outer row of impact elements, a further circumferential row of spaced apart impact elements concentric with and adjacent to said radially outer row of impact elements and carried by said housing, said further row of impact elements cooperating with said radially outer row of impact elements to perform the final pulverizing of said material in said pulverizer, said disc means comprising a smaller central disc having peripheral notches therein which widen out in the radially inward direction, said radially inner row of impact elements having foot portions thereon fitting said notches and being adapted for insertion into the notches in the axial direction, and a clamp disc overlying said notches and retaining said impact elements therein.
Claim 3
Dependent Claim
30 words
An impact pulverizer according to claim 1, in which said feeding means is an annular passage opening at its lower end directly over said radially inner row of impact elements.
Claim 4
Dependent Claim
33 words
An impact pulverizer according to claim 2, in which said housing is spiral shaped in the region thereOf surrounding said disc means and includes at least one substantially tangential outlet for pulverized material.
Claim 5
Dependent Claim
36 words
An impact pulverizer according to claim 2, in which said housing is cylindrical in the region thereof surrounding said disc means and is provided with outlet means for the withdrawal of pulverized material from the pulverizer.
Claim 6
Dependent Claim
76 words
An impact pulverizer according to claim 1, in which said disc means includes a larger disc having axial apertures at the periphery, said outer row of impact elements being insertable axially into said apertures and having an enlarged portion at one end to abut one side of said larger disc, and a further clamp member engaging said enlarged ends of the impact elements of said outer row thereof to hold them in position in said apertures.
Claim 7
Dependent Claim
42 words
An impact pulverizer according to claim 5, in which the center of gravity of each impact element of said outer row thereof is located on the opposite side of said larger disc from the said enlarged end of the respective impact element.
Claim 8
Dependent Claim
73 words
An impact pulverizer according to claim 6, in which said inner and outer rows of impact elements extend vertically upwardly from said disc means and said housing includes an upper wall extending horizontally over said rows of impact elements on said disc means, and a filler member on the underside of said upper wall of the housing dependant therefrom in the radial region between said rows of impact elements on the disc means.
Claim 9
Dependent Claim
53 words
An impact pulverizer according to claim 7, which includes a drive shaft connected to said disc means in the center thereof and extending downwardly therefrom, and an air impeller in said housing on said shaft beneath the disc means and operable for impelling air radially outwardly in the housing beneath said disc means.
Claim 10
Dependent Claim
33 words
An impact pulverizer according to claim 8, which includes a drive motor having an output shaft coaxial with said drive shaft, and clutch means coupling said motor output shaft to said drive shaft.
Claim 11
Dependent Claim
169 words
In an impact crusher apparatus, a housing having a cover means, a disc body mounted in said housing for rotation about a vertical axis of rotation, an inner cascade of pulverizing elements mounted in said housing above the plane of said disc body for rotation about said axis, an outer cascade of pulverizing elements arranged in horizontal, coplanar relationship to said inner cascade and spaced radially outwardly from said inner cascade and mounted for rotation about said axis, an impact cascade of impact crusher elements fixed to said housing cover means in horizontal, coplanar relationship outwardly of said outer, rotatable cascade, and an axial supply for material to be pulverized comprising a ring-passage-forming means coaxial with said axis and opening into said housing with said pulverizing elements of said inner cascade directly below and in alignment with said ring-passage-forming means, said radially spaced pulverizing elements of said inner and outer cascades defining a ring-formed space means free of pulverizing elements in radial direction between the inner and outer cascades.
Claim 12
Dependent Claim
169 words
In an impact crusher apparatus, a housing having a cover means, a disc body mounted in said housing for rotation about a vertical axis of rotation, an inner cascade of pulverizing elements mounted in said housing above the plane of said disc body for rotation about said axis, an outer cascade of pulverizing elements arranged in horizontal, coplanar relationship to said inner cascade and spaced radially outwardly from said inner cascade and mounted for rotation about said axis, an impact cascade of impact crusher elements fixed to said housing cover means in horizontal, coplanar relationship outwardly of said outer, rotatable cascade, and an axial supply for material to be pulverized comprising a ring-passage-forming means coaxial with said axis and opening into said housing with said pulverizing elements of said inner cascade directly below and in alignment with said ring-passage-forming means, said radially spaced pulverizing elements of said inner and outer cascades defining a ring-formed space means free of pulverizing elements in radial direction between the inner and outer cascades.
Claim 13
Dependent Claim
56 words
An impact crusher apparatus according to claim 10, in which a bottom portion of said housing cover means lies in an area between said pulverizing elements of rotating cascade means, and the upper edges of said pulverizing elements of said outer cascade lie in substantially the plane of said bottom portion of said housing cover means.
Claim 14
Dependent Claim
80 words
An impact crusher apparatus according to claim 11, in which swallow-tail-formed recess means are provided for guidance of pulverizing elements of the inner rotating cascade and maintained on top by one disc body, base portions of pulverizing elements of the outer rotating cascade being formed complementary to recesses in the larger disc body, dish spring holding means hindering drop out of said base portions during standstill, and that hold said base portions in complementary interfit with pulverizing elements during operation.
Claim 15
Dependent Claim
24 words
An impact crusher apparatus accOrding to claim 12, in which a spiral-form-embodied housing having at least one exit encompasses outer range of pulverizing space.
Claim 16
Dependent Claim
29 words
An impact crusher apparatus according to claim 12, in which a cylindrical housing having withdrawal connections for pulverizing elements output is provided around outer range of the pulverizing space.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |