US3733839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removing articles from heat extraction devices
Assignee: EIDP Inc
•
Filing: 1971-08-12
•
Granted: 1973-05-22
•
Expires: 1991-08-12
Abstract
Abstract In a process for extracting heat from articles by contacting them directly with an ebullient liquid polyfluorinatedC1-C4 saturated halohydrocarbon freezant in a 100 percent freezant vapor zone, the method of removing the articles from said freezant-vapor zone by dropping them into a flowing stream of liquid which carries them to a discharge point outside the 100 percent freezant vapor zone; discharging the stream with the articles and separating the articles from the stream.
Inventors
- 👤 V Waldin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:09
CPC Classifications
F; F25; F25D; F25D9/00; F25D9/005
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
41 words
A process according to claim 1 wherein the articles are separated from the liquid stream in (d) by passing the stream through a tilted screen which, while capable of allowing the stream to pass therethrough, prevents the articles from passing therethrough.
Claim 2
Dependent Claim
17 words
A process according to claim 1 wherein the flowing stream of liquid in the system is water.
Claim 3
Dependent Claim
33 words
A process according to claim 3 wherein the temperature of the water is about 10*C. and the residence time of the articles in the stream, prior to separation therefrom, is about 10 seconds.
Claim 4
Dependent Claim
33 words
A process according to claim 3 wherein the temperature of the water is about 1*-3*C. and the residence time of the articles in the stream, prior to separation therefrom, is about 2 seconds.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |