US3813045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hammer crusher
Assignee: ThyssenKrupp Industrial Solutions AG
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Filing: 1972-09-25
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Granted: 1974-05-28
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Expires: 1992-09-25
Abstract
Abstract A hammer crusher having a housing within which is journaled one or more rotatable hammer shafts cooperable with an anvil and gratings, each grating including replaceable grating bars. The grating bars are accessible for replacement by being mounted on a carrier movable into and out of the housing along a substantially horizontal path and without requiring appreciable lowering of the carrier to effect its removal from the housing.
Inventors
- 👤 Greiffenstern K Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:34
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/26; B02C13/282; B02C13/284
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
125 words
Hammer crusher apparatus comprising a housing; at least one rotor journaled in said housing for rotation about an axis; hammers carried by said rotor for movement in a rotary path; anvil means fixed in said housing adjacent said path; grating means arranged in an arc adjacent said path; carriage means supporting said grating means for movement relative to said rotor substantially horizontally without appreciable lowering from a first position within said housing and extending on both sides of a vertical plane passing through said axis to a second position in which said grating means is wholly on one side of said plane; and a fixed grating carried by said housing in a position to form a bridge between said anvil means and said grating means.
Claim 2
Dependent Claim
125 words
Hammer crusher apparatus comprising a housing; at least one rotor journaled in said housing for rotation about an axis; hammers carried by said rotor for movement in a rotary path; anvil means fixed in said housing adjacent said path; grating means arranged in an arc adjacent said path; carriage means supporting said grating means for movement relative to said rotor substantially horizontally without appreciable lowering from a first position within said housing and extending on both sides of a vertical plane passing through said axis to a second position in which said grating means is wholly on one side of said plane; and a fixed grating carried by said housing in a position to form a bridge between said anvil means and said grating means.
Claim 3
Dependent Claim
27 words
Apparatus according to claim 1 including abutment means engageable by said carriage means to provide vertical support therefor when said carriage means is in said first position.
Claim 4
Dependent Claim
18 words
Apparatus according to claim 2 wherein said abutment means includes an inclined surface engageable by said carriage means.
Claim 5
Dependent Claim
15 words
Apparatus according to claim 1 including roller means supporting said carriage means for such movement.
Claim 6
Dependent Claim
28 words
Apparatus according to claim 1 including a second rotor journaled in said housing and having hammers carried thereby, said anvil means being common to both of said rotors.
Claim 7
Dependent Claim
53 words
Apparatus according to claim 5 including second grating means and second carriage means corresponding to the first-mentioned grating means and carriage means, respectively, said second carriage means also being movable substantially horizontally without appreciable lowering between first and second positions corresponding respectively to the first and second positions of said first-mentioned carriage means.
Claim 8
Dependent Claim
51 words
Apparatus according to claim 1 including roller means for supporting said carriage means during such movement thereof, and abutment means engageable by said carriage means to provide vertical support therefor when said carriage means is in said first position and relieve said roller means of the support of said carriage means.
References Cited (Backward Citations)
US1494302A
Cited
US1647183A
Cited
US2450492A
Cited
US2554071A
Cited
US2661158A
Cited
US2975985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |