US3090208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling method by means of negative pressure given on the vortex tube
Assignee: Individual
•
Filing: 1960-01-12
•
Granted: 1963-05-21
•
Expires: 1980-01-12
Abstract
No abstract record available.
Inventors
- 👤 Munakata Ken-Iti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:23
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/32; F; F25; F25B; F25B9/00; F25B9/02; F25B9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A COOLING DEVICE FOR USE IN ASSOCIATION WITH A SOURCE OF NEGATIVE PRESSURE, SUCH AS THE INLET FOR AN INTERNAL COMBUSTION ENGINE, COMPRESSOR AND THE LIKE COMPRISING A VORTEX TUBE HAVING A COLD FLUID DISCHARGE AND A HOT FLUID DISCHARGE, HEAT EXCHANGER MEANS CONNECTED TO SAID COLD FLUID DISCHARGE, AND MEANS FOR CONNECTING THE
Claim 2
Dependent Claim
54 words
A COOLING DEVICE FOR USE IN ASSOCIATION WITH A SOURCE OF NEGATIVE PRESSURE, SUCH AS THE INLET FOR AN INTERNAL COMBUSTION ENGINE, COMPRESSOR AND THE LIKE COMPRISING A VORTEX TUBE HAVING A COLD FLUID DISCHARGE AND A HOT FLUID DISCHARGE, HEAT EXCHANGER MEANS CONNECTED TO SAID COLD FLUID DISCHARGE, AND MEANS FOR CONNECTING THE
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) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |