Patent US3833178A successfully refreshed from Google Patents.
US3833178A
Expired / Lapsed
US
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Method of comminuting synthetic-resin articles
Assignee: Individual
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Filing: 1972-11-06
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Granted: 1974-09-03
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Expires: 1992-11-06
Abstract
Abstract A method of and an apparatus for the comminution of syntheticresin articles wherein a rotatable grinder operating at high speed in a container comminutes the articles and, at the same time, agitates the pieces of synthetic resin in a washing liquor containing a washing agent so that both washing and comminution occur simultaneously.
Inventors
- 👤 E Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:21
CPC Classifications
B; B02; B02C; B02C18/00; B02C18/0084; B02C18/06; B02C18/08; B02C18/086; B02C23/00; B02C23/18; B26; B26D; B26D1/00; B26D1/01; B26D1/12; B26D1/25; B26D1/34; B26D1/38; B29; B29B; B29B17/00; B29B17/02; C; C08; C08J; C08J11/00; C08J11/04; C08J11/06; B29B17/04; B29B2017/0424; B29B2017/048; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2023/10; B29K2023/12; B29K2027/00; B29K2027/06; B29K2033/00; B29K2033/04; B29K2055/00; B29K2055/02; B29K2069/00; B29K2077/00; B29K2105/00; B29K2105/06; B29K2105/065; B29L; B29L2007/00; B29L2007/008; B29L2031/00; B29L2031/712; B29L2031/7158; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
19 words
The method defined in claim 1, further comprising the step of adding a washing agent to said wash liquid.
Claim 2
Independent Claim
116 words
A method of comminuting thermoplastic synthetic-resin material, comprising the step of simultaneously comminuting said material with a high-speed impact comminutor and passing a wash liquid through said material to remove contaminants therefrom during the comminution of said material, said material being comminuted and washed in a vessel in which said impact comminutor is rotatable, said method further comprising the stEps of terminating the supply of said wash liquid to said vessel upon the discharge of wash liquid therefrom becoming clear, centrifuging adherent wash liquid from the comminuted material directly in said vessel by said impact comminutor, and heating said comminuted material directly in said vessel by operation of said impact comminutor to vaporize residual wash liquid.
Claim 3
Dependent Claim
27 words
The method defined in claim 3, further comprising the step of agglomerating the comminuted material directly in said vessel subsequent to the evaporation of wash liquid therefrom.
Claim 4
Dependent Claim
21 words
The method defined in claim 4 wherein said material is agglomerated in said vessel and a cooling fluid is added thereto.
Claim 5
Dependent Claim
23 words
The method defined in claim 3 wherein said impact comminutor is a rotor operated at a speed between substantially 4,000 and 10,000 m/min.
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) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |