Patent US3393010A successfully refreshed from Google Patents.
Patent US3302937A successfully refreshed from Google Patents.
US3302937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for colling metallic and nonmetallic particles
Assignee: Pelm Res and Dev Corp
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Filing: 1964-05-19
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Granted: 1967-02-07
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Expires: 1984-05-19
Abstract
No abstract record available.
Inventors
- 👤 George W Pixley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:59
CPC Classifications
F; F28; F28C; F28C3/00; F28C3/10; F28C3/12; F28C3/18; C; C04; C04B; C04B20/00; C04B20/02; C04B20/04; C04B20/06; F27; F27B; F27B7/00; F27B7/20; F27B7/38; F27B7/383; F27B7/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
AN APPARATUS FOR FORMING LIGHTWEIGHT AGGREGATES COMPRISING: (A) A HEATING CHAMBER, (B) A PRESSURE-TIGHT COOLING CHAMBER HAVING INPUT AND OUTPUT ENDS, (C) TRANSITION MEANS AT THE INPUT END CONNECTING SAID HEATING CHAMBER TO SAID COOLING CHAMBER, (D) MEANS TO CONVEY MATERIAL THROUGH SAID COOLING CHAMBER, (E) MEANS IN SAID COOLING CHAMBER FOR COOLING MATERIAL PASSING THERETHROUGH AND FOR PREHEATING MATERIAL IN SAID HEATING CHAMBER, SAID COOLING AND PREHEATING MEANS INCLUDING MEANS FOR REGULATING THE PRESSURE OF SAID COOLING CHAMBER, SAID REGULATION MEANS INCLUDING MEANS FOR FORCING GAS INTO SAID COOLING CHAMBER ADJACENT SAID OUTPUT END AND MEANS FOR EXHAUSTING A PORTION OF SAID GAS FROM SAID COOLING CHAMBER AFTER SAID GAS HAS PASSED A SUBSTANTIAL DISTANCE THROUGH SAID COOLING CHAMBER, SAID EXHAUST MEANS INCLUDING AN EXHAUST TUBE AND AN EXHAUST PRESSURE MEANS CONNECTED TO SAID TUBE, WHEREBY A CONTROLLED PRESSURE IS MAINTAINED SUBSTANTIALLY THROUGHOUT SAID CHAMBER AND A REGULATED PORTION OF SAID GAS IS ALLOWED TO PASS INTO SAID HEATING CHAMBER, SAID COOLING CHAMBER BEING ROTATED AND SAID TUBE BEING SUPPORTED BY METAL SPIDERS ALONG THE AXIS OF ROTATION OF SAID COOLING CHAMBER.
Claim 2
Independent Claim
183 words
AN APPARATUS FOR FORMING LIGHTWEIGHT AGGREGATES COMPRISING: (A) A HEATING CHAMBER, (B) A PRESSURE-TIGHT COOLING CHAMBER HAVING INPUT AND OUTPUT ENDS, (C) TRANSITION MEANS AT THE INPUT END CONNECTING SAID HEATING CHAMBER TO SAID COOLING CHAMBER, (D) MEANS TO CONVEY MATERIAL THROUGH SAID COOLING CHAMBER, (E) MEANS IN SAID COOLING CHAMBER FOR COOLING MATERIAL PASSING THERETHROUGH AND FOR PREHEATING MATERIAL IN SAID HEATING CHAMBER, SAID COOLING AND PREHEATING MEANS INCLUDING MEANS FOR REGULATING THE PRESSURE OF SAID COOLING CHAMBER, SAID REGULATION MEANS INCLUDING MEANS FOR FORCING GAS INTO SAID COOLING CHAMBER ADJACENT SAID OUTPUT END AND MEANS FOR EXHAUSTING A PORTION OF SAID GAS FROM SAID COOLING CHAMBER AFTER SAID GAS HAS PASSED A SUBSTANTIAL DISTANCE THROUGH SAID COOLING CHAMBER, SAID EXHAUST MEANS INCLUDING AN EXHAUST TUBE AND AN EXHAUST PRESSURE MEANS CONNECTED TO SAID TUBE, WHEREBY A CONTROLLED PRESSURE IS MAINTAINED SUBSTANTIALLY THROUGHOUT SAID CHAMBER AND A REGULATED PORTION OF SAID GAS IS ALLOWED TO PASS INTO SAID HEATING CHAMBER, SAID COOLING CHAMBER BEING ROTATED AND SAID TUBE BEING SUPPORTED BY METAL SPIDERS ALONG THE AXIS OF ROTATION OF SAID COOLING CHAMBER.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |