Patent US3235002A successfully refreshed from Google Patents.
US3235002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchange apparatus
Assignee: SPX Technologies Inc
•
Filing: 1963-11-07
•
Granted: 1966-02-15
•
Expires: 1983-11-07
Abstract
No abstract record available.
Inventors
- 👤 Henry W Bevarly
- 👤 Thomas H Bachmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:44
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/22; B01D1/222; B01D1/223; B01D1/225; A; A23; A23B; A23B2/00; A23B2/40; A23B2/42; A23B2/46; A23D; A23D7/00; A23D7/02; A23D7/04; A23D7/05; A23D9/00; A23D9/02; A23G; A23G9/00; A23G9/04; A23G9/14; A23G9/16; A23G9/22; A23G9/224; F; F28; F28F; F28F19/00; F28F19/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
IN A HEAT EXCHANGE APPARATUS: A TUBE, MEANS FOR PASSING A HEAT EXCHANGE MEDIUM INTO HEAT EXCHANGE RELATIONSHIP WITH SAID TUBE, INLET AND OUTLET MEANS DISPOSED AT OPPOSED ENDS OF SAID TUBE FOR INTRODUCING AND DISCHARGING FLOWABLE MATERIALS, A SHAFT ROTATABLE WITHIN SAID TUBE, A PLURALITY OF SCRAPER BLADES MOVABLY MOUNTED ON SAID SHAFT FOR SCRAPING CONTACT WITH THE INNER SURFACE OF SAID TUBE, AND MEANS MOUNTING SAID SHAFT FOR EFFECTING SUBSTANTIALLY NO OSCILLATION OF THE BLADES AT ONE END OF SAID SHAFT AND FOR EFFECTING PROGRESSIVELY INCREASING OSCILLATION OF THE BLADES TOWARD THE OTHER END OF SAID SHAFT WHEN SAID SHAFT ROTATES.
Claim 2
Dependent Claim
103 words
IN A HEAT EXCHANGE APPARATUS: A TUBE, MEANS FOR PASSING A HEAT EXCHANGE MEDIUM INTO HEAT EXCHANGE RELATIONSHIP WITH SAID TUBE, INLET AND OUTLET MEANS DISPOSED AT OPPOSED ENDS OF SAID TUBE FOR INTRODUCING AND DISCHARGING FLOWABLE MATERIALS, A SHAFT ROTATABLE WITHIN SAID TUBE, A PLURALITY OF SCRAPER BLADES MOVABLY MOUNTED ON SAID SHAFT FOR SCRAPING CONTACT WITH THE INNER SURFACE OF SAID TUBE, AND MEANS MOUNTING SAID SHAFT FOR EFFECTING SUBSTANTIALLY NO OSCILLATION OF THE BLADES AT ONE END OF SAID SHAFT AND FOR EFFECTING PROGRESSIVELY INCREASING OSCILLATION OF THE BLADES TOWARD THE OTHER END OF SAID SHAFT WHEN SAID SHAFT ROTATES.
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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |