Patent US3602444A successfully refreshed from Google Patents.
US3602444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact comminutor
Assignee: HAZEMAZ HARTZERKLEINERUNZS und
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Filing: 1969-03-11
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Granted: 1971-08-31
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Expires: 1989-03-11
Abstract
Abstract An impact comminuter for bulky refuse comprises a housing for a toothed impeller which rotates about a horizontal axis and propels material against an impact surface provided on a breaker plate which is yieldably mounted in the housing at a level above the impeller axis. The breaker plate has a serrated portion which is adjacent to the impeller and whose teeth define gaps for the teeth of the impeller. The front flanks of teeth on the serrated portion are either flush with the impact surface or are located downstream of such surface, as considered in the direction of rotation of the impeller. The front flanks and/or the lands of teeth on the serrated portion can be provided with serrations.
Inventors
- 👤 Ludwig Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:19
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/02; B02C13/06; B02C13/09; B02C13/095
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
161 words
In an impact comminutor, particularly for crushing of bulky refuse or like material, a combination comprising a housing having an inlet; an impeller having beating means, said impeller being rotatable about an axis and being mounted in said housing in the path of material which is admitted by way of said inlet into said housing; and at least one breaker means provided in said housing, said breaker means including a first portion having a plane impact surface directed toward said axis and against which the admitted material is impelled by said impeller and a second serrated portion between said impeller and said impact surface, said second portion being provided with teeth which are spaced in the direction of said axis and which extends substantially in the direction of rotation of said beating means, said teeth having front surfaces which are at most flush with the adjoining part of said impact surface as considered in the direction of rotation of said impeller.
Claim 2
Dependent Claim
161 words
In an impact comminutor, particularly for crushing of bulky refuse or like material, a combination comprising a housing having an inlet; an impeller having beating means, said impeller being rotatable about an axis and being mounted in said housing in the path of material which is admitted by way of said inlet into said housing; and at least one breaker means provided in said housing, said breaker means including a first portion having a plane impact surface directed toward said axis and against which the admitted material is impelled by said impeller and a second serrated portion between said impeller and said impact surface, said second portion being provided with teeth which are spaced in the direction of said axis and which extends substantially in the direction of rotation of said beating means, said teeth having front surfaces which are at most flush with the adjoining part of said impact surface as considered in the direction of rotation of said impeller.
Claim 3
Dependent Claim
33 words
A combination as defined in claim 1, wherein said teeth defining between themselves gaps and wherein said beating means are teeth which pass through said gaps in response to rotation of said impeller.
Claim 4
Dependent Claim
34 words
A combination as defined in claim 2, wherein each of said teeth has a face facing said impeller and including with the front surface of the respective tooth an angle of less than 90*.
Claim 5
Dependent Claim
20 words
A combination as defined in claim 2, wherein the teeth of said serrated portion have serrated lands facing said impeller.
Claim 6
Dependent Claim
29 words
A combination as defined in claim 1, wherein said serrated portion extends along an angle of at least 15*, as considered in the direction of rotation of said impeller.
Claim 7
Dependent Claim
28 words
A combination as defined in claim 1, further comprising second breaker means located past said first-mentioned breaker means, as considered in the direction of rotation of said impeller.
Claim 8
Dependent Claim
32 words
A combination as defined in claim 6, wherein the teeth of said second breaker means are longer in the direction of rotation of said impeller than those of said first breaker means.
Claim 9
Dependent Claim
23 words
A combination as defined in claim 14, further comprising means for adjusting the position of said breaker means with reference to said impeller.
Claim 10
Dependent Claim
36 words
A combination as defined in claim 1, wherein said impeller is rotatable about a substantially horizontal axis and wherein said breaker means is located at a level above a horizontal plane which includes said horizontal axis.
Claim 11
Dependent Claim
20 words
A combination as defined in claim 1, further comprising fastener means separably securing said serrated portion to said first portion.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |