US3756518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for processing resin
Assignee: Individual
•
Filing: 1971-03-08
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Granted: 1973-09-04
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Expires: 1991-03-08
Abstract
Abstract Apparatus including an elongated mill structure having a cooling jacket wherein a resin is fed from a resin kettle directly to the mill structure in a molten state, wherein it is forced down the structure and along the structure''s cool periphery to lower the temperature of the resin to its brittle temperature, and wherein the hardened resin is broken into particles of desired shape and size as a finished product.
Inventors
- 👤 W Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:56
CPC Classifications
B; B29; B29B; B29B13/00; B29B13/10; B29B13/02; B29B13/022
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
167 words
An improvement in apparatus utilizing an elongate mill structure with an elongate grinding element coaxially rotatably mounted in an elongate carrier having entrance and exit ends, wherein the improvement comprises: resin kettle means including a resin kettle for heating resins to a molten state; feed means including a kettle discharge line disposed between and communicating with said resin kettle and said entrance end of said carrier for transporting resins in a molten state from said resin kettle means to said carrier; cooling means disposed about the periphery of said carrier for lowering the temperature of resiN within said carrier from its melting point to its brittle point; and grinding means including means driving said grinding element for moving resin in its molten state both toward said exit end of said carrier and towards said periphery thereof to be cooled and made solid, and for continuously producing and reducing the size of particles of resin ejected as a finished particulate product at said exit end of said carrier.
Claim 2
Dependent Claim
167 words
An improvement in apparatus utilizing an elongate mill structure with an elongate grinding element coaxially rotatably mounted in an elongate carrier having entrance and exit ends, wherein the improvement comprises: resin kettle means including a resin kettle for heating resins to a molten state; feed means including a kettle discharge line disposed between and communicating with said resin kettle and said entrance end of said carrier for transporting resins in a molten state from said resin kettle means to said carrier; cooling means disposed about the periphery of said carrier for lowering the temperature of resiN within said carrier from its melting point to its brittle point; and grinding means including means driving said grinding element for moving resin in its molten state both toward said exit end of said carrier and towards said periphery thereof to be cooled and made solid, and for continuously producing and reducing the size of particles of resin ejected as a finished particulate product at said exit end of said carrier.
Claim 3
Dependent Claim
23 words
The improvement according to claim 1, wherein said grinding means also includes a variable speed motor mechanically coupled to said elongate grinding element.
Claim 4
Dependent Claim
26 words
The improvement according to claim 1, wherein said feed means also includes valve means in said discharge line for controlling the flow of said molten resin.
Claim 5
Dependent Claim
44 words
An improvement according to claim 1, wherein said grinding element is an Archimedes screw, and wherein said cooling means includes a coolant jacket disposed about said carrier, said jacket including intake and outlet port means for operationally coupling to said coolant jacket a coolant.
Claim 6
Dependent Claim
45 words
The improvement according to claim 1, wherein said grinding means further includes an orifice fixture disposed at said exit end of said carrier, said fixture including an orifice configuration determining the size and shape of the hardened resin particles furnished as said finished particulate product.
Claim 7
Dependent Claim
24 words
The improvement according to claim 5, wherein said orifice fixture includes an apertured cutter mounted on the downstream end of said elongate grinding element.
Claim 8
Dependent Claim
29 words
The improvement according to claim 1, further comprising conveyor means disposed adjacent said exit end of said elongated carrier for transporting said finished particulate product to a predetermined location.
Claim 9
Dependent Claim
27 words
The improvement according to claim 4, wherein said coolant is at a temperature lowering the temperature of resin within said carrier to its brittle point above ambient.
Claim 10
Dependent Claim
26 words
The improvement according to claim 4, wherein said coolant is refrigerated to a temperature lowering the temperature of resin within said carrier to its brittle point.
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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |