Patent US1477528A successfully refreshed from Google Patents.
US3860184A
Expired / Lapsed
US
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Impact crushers
Assignee: Acton V E H
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Filing: 1972-11-08
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Granted: 1975-01-14
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Expires: 1992-11-08
Abstract
Abstract An impact crusher of the type having a beater assembly located inside a casing provided with hardwearing liners with which the beaters cooperate, the beater assembly being rotatable about a vertical axis, the impact crusher being provided with a feed assembly comprising a rotatable housing having a series of generally radially extending outlet passages directed towards the hardwearing liners and a duct for feeding material to be crushed into the housing.
Inventors
- 👤 Victor Ernest Henry Acton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:28
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/26; B02C13/286; B02C2013/28618; B02C2013/28681
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
165 words
An impact crusher comprising: a stationary casing having a geneally upright cylindrical bowl; a rotatable beater assembly located within said bowl, said beater assembly including a plurality of substantially horizontal radially extending elongate blades rotatable about a vertical axis; carrier means pivotally supporting said beater assembly; and a material feed assembly located above said beater assembly and coaxial with the pivotal axis of said beater assembly, said feed assembly including a vertical duct having means at the upper end thereof for infeed of material, a rotatable housing encompassing the lower outlet end of said duct, said housing having a plurality of open-ended radially outwardly extending passages for ejecting material therefrom toward the inner annular surface of said bowl, said feed assembly housing including two spaced radially extending plates and a plurality of radially extending vanes interconnecting said plates and defining said passages therewith, said vanes including a series of transversely extending strips thereon, said strips being spaced apart along the length of each said vane.
Claim 2
Dependent Claim
165 words
An impact crusher comprising: a stationary casing having a geneally upright cylindrical bowl; a rotatable beater assembly located within said bowl, said beater assembly including a plurality of substantially horizontal radially extending elongate blades rotatable about a vertical axis; carrier means pivotally supporting said beater assembly; and a material feed assembly located above said beater assembly and coaxial with the pivotal axis of said beater assembly, said feed assembly including a vertical duct having means at the upper end thereof for infeed of material, a rotatable housing encompassing the lower outlet end of said duct, said housing having a plurality of open-ended radially outwardly extending passages for ejecting material therefrom toward the inner annular surface of said bowl, said feed assembly housing including two spaced radially extending plates and a plurality of radially extending vanes interconnecting said plates and defining said passages therewith, said vanes including a series of transversely extending strips thereon, said strips being spaced apart along the length of each said vane.
Claim 3
Dependent Claim
22 words
An impact crusher as claimed in claim 1 wherein said strips are positioned adjacent the leading side of each of said vanes.
Claim 4
Dependent Claim
22 words
An impact crusher as claimed in claim 2, said strips being each inclined toward the central axis of rotation of said housing.
Claim 5
Dependent Claim
20 words
An impact crusher as claimed in claim 1, said feed assembly housing being rotatable in unison with said beater assembly.
Claim 6
Dependent Claim
141 words
An impact crusher comprising: a stationary casing having a generally upright cylindrical bowl; a rotatable beater assembly located within said bowl, said beater assembly including a plurality of substantially horizontal radially extending elongate blades rotatable about a vertical axis; carrier means pivotally supporting said beater assembly; and a material feed assembly located above said beater assembly and coaxial with the pivotal axis of said beater assembly, said feed assembly including a vertical duct having means at the upper end thereof for infeed of material, a rotatable housing encompassing the lower outlet end of said duct, said housing having a plurality of open-ended radially outwardly extending passages for ejecting material therefrom toward the inner annular surface of said bowl, and a vertically extending short cylindrical duct portion secured to said rotatable housing and communicating with the radially inner ends of said passages.
Claim 7
Dependent Claim
141 words
An impact crusher comprising: a stationary casing having a generally upright cylindrical bowl; a rotatable beater assembly located within said bowl, said beater assembly including a plurality of substantially horizontal radially extending elongate blades rotatable about a vertical axis; carrier means pivotally supporting said beater assembly; and a material feed assembly located above said beater assembly and coaxial with the pivotal axis of said beater assembly, said feed assembly including a vertical duct having means at the upper end thereof for infeed of material, a rotatable housing encompassing the lower outlet end of said duct, said housing having a plurality of open-ended radially outwardly extending passages for ejecting material therefrom toward the inner annular surface of said bowl, and a vertically extending short cylindrical duct portion secured to said rotatable housing and communicating with the radially inner ends of said passages.
Claim 8
Dependent Claim
20 words
An impact crusher as claimed in claim 5, said feed assembly housing being rotatable in unison with said beater assembly.
Claim 9
Dependent Claim
157 words
An impact crusher comprising: a stationary casing having a generally upright cylindrical bowl; a rotatable beater assembly located within said bowl, said beater assembly including a plurality of substantially horizontal radially extending elongate blades rotatable about a vertical axis; carrier means pivotally supporting said beater assembly; and a material feed assembly located above said beater assembly and coaxial with the pivotal axis of said beater assembly, said feed assembly including a vertical duct having means at the upper end thereof for infeed of material, a rotatable housing encompassinG the lower outlet end of said duct, said housing having a plurality of open-ended radially outwardly extending passages for ejecting material therefrom toward the inner annular surface of said bowl, and hard-wearing liners located within said bowl and annularly encompassing said beater blades and said feed assembly, said hard-wearing liners being one-piece elements which are continuous in height throughout the height of said beater blades and said feed assembly.
Claim 10
Dependent Claim
157 words
An impact crusher comprising: a stationary casing having a generally upright cylindrical bowl; a rotatable beater assembly located within said bowl, said beater assembly including a plurality of substantially horizontal radially extending elongate blades rotatable about a vertical axis; carrier means pivotally supporting said beater assembly; and a material feed assembly located above said beater assembly and coaxial with the pivotal axis of said beater assembly, said feed assembly including a vertical duct having means at the upper end thereof for infeed of material, a rotatable housing encompassinG the lower outlet end of said duct, said housing having a plurality of open-ended radially outwardly extending passages for ejecting material therefrom toward the inner annular surface of said bowl, and hard-wearing liners located within said bowl and annularly encompassing said beater blades and said feed assembly, said hard-wearing liners being one-piece elements which are continuous in height throughout the height of said beater blades and said feed assembly.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |