Patent US3578254A successfully refreshed from Google Patents.
US3578254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact crusher
Assignee: Acrowood Corp
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Filing: 1968-09-23
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Granted: 1971-05-11
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Expires: 1988-09-23
Abstract
Abstract An impact crusher having impeller shoes and anvils capable of easy replacement and furthermore capable of repositioning individually in the crusher as wear occurs. The impeller shoes are triangular in shape for operation in forward or reverse directions of rotation without shifting their position. The anvils are supported on a crusher housing by means of brackets capable of adjustment radially in the housing for repositioning the anvils.
Inventors
- 👤 Bruce V Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:04
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/14; B02C13/18; B02C13/1807; B02C13/1835; B02C2013/1878
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
142 words
An impact crusher comprising: a. a housing, b. a feed inlet in said housing, c. an impeller unit rotatably mounted in said housing, d. drive means connected to said impeller unit for rotating the same whereby to impel material fed through said inlet away from the impeller unit, e. a plurality of anvil members disposed in said housing around said impeller unit, f. said anvil members having a face portion against which rock from said impeller unit is impelled and broken, g. said face portions being disposed at substantially right angles to the radius of said impeller unit at respective anvil members, h. and means mounting said anvil members in said housing for adjustable movement radially in said housing to maintain a selected spacing between the said face portion and said impeller unit as wear takes place on the said face portions.
Claim 2
Dependent Claim
142 words
An impact crusher comprising: a. a housing, b. a feed inlet in said housing, c. an impeller unit rotatably mounted in said housing, d. drive means connected to said impeller unit for rotating the same whereby to impel material fed through said inlet away from the impeller unit, e. a plurality of anvil members disposed in said housing around said impeller unit, f. said anvil members having a face portion against which rock from said impeller unit is impelled and broken, g. said face portions being disposed at substantially right angles to the radius of said impeller unit at respective anvil members, h. and means mounting said anvil members in said housing for adjustable movement radially in said housing to maintain a selected spacing between the said face portion and said impeller unit as wear takes place on the said face portions.
Claim 3
Dependent Claim
33 words
The impact crusher of claim 1 wherein said anvil members are disposed in side-abutting pairs and said means mounting said anvil members in said housing provides individual radial adjustment of said anvil members.
Claim 4
Dependent Claim
47 words
The impact crusher of claim 1 wherein said means mounting said anvil members in said housing includes a bracket secured to said anvil members, and radial extension means on said housing receiving said bracket in different radial positions for accomplishing said radial adjustment of said anvil members.
Claim 5
Dependent Claim
38 words
The impact crusher of claim 1 wherein said anvil members are disposed in substantially side-by-side relation and said means mounting said anvil members in said housing provide individual adjustment of said anvil members relative to said impeller unit.
Claim 6
Dependent Claim
60 words
The impact crusher of claim 1 wherein said means mounting the anvil members in said housing comprise radially extending walls, bracket means secured to said anvil members, and fastening means arranged to secure said bracket means to said radially extending walls in different radial positions for accomplishing the said adjustable movement of the anvil members relative to said impeller unit.
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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |