Fish cooling and preserving system
Abstract
Abstract AN APPARATUS AND METHOD, USING BOILED-OFF GAS FROM LIQUID NITROGEN, FOR COOLING AND PRESERVING FISH, MEAT OR OTHER SPOILABLE PRODUCTS, ESPECIALLY ADAPTED TO COOL FISH (FOR EXAMPLE, SHELLFISH) ON FISHING VESSELS. IT COMPRISES A BOX (PLACED IN THE HOLD OF A FISHING CRAFT AND EASILY OPENED FROM ITS TOP ONLY), A REMOVABLE WIRE-MESH BASKET OR SET OF BASKETS IN THE BOX, MEANS FOR SUPPLYING COLD GASEOUS NITROGEN FROM THE BOTTOM OF THE BOX, UPWARD THRU THE BASKET AND SPOILABLE PRODUCTS, AND MEANS TO MAINTAIN THE GAS AT ABOVE-ATMOSPHERIC PRESSURE WHILE IT IS IN THE BOX. THIS PRESSURE FORCES NITROGEN INTO THE FISH, THUS COOLING IT AND ALSO PRESERVING IT AGAINST ATTACK BY AEROBIC BACTERIA. AFTER THE BASKET MEANS IS FILLED IT AND ITS COOLED CONTENTS MAY BE EASILY REMOVED FROM THE BOX.
Inventors
- 👤 David Lee Johnson
Bibliographic Details
Claims Analysis
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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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |