US4934151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous multistage thermal processing apparatus, freezing control method for use by the apparatus, and apparatus for preparing a recording medium for the control method
Assignee: Kyokujitsu Co Ltd
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Filing: 1989-07-07
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Granted: 1990-06-19
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Expires: 2009-07-07
Abstract
Abstract An apparatus for continuous freezing or heating process for multistage changing of the ambient temperature, in particular, an apparatus for a continuous freezing process, a freezing control method, and an apparatus for preparing a recording medium on which a program for the control method is written are disclosed.
Inventors
- 👤 Yoshisuke Shima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:34
CPC Classifications
F; F25; F25D; F25D3/00; F25D3/10; F25D3/11; A; A23; A23B; A23B2/00; A23B2/80; A23B2/803; A23B2/805; A23B2/85; A23B2/88; F25D29/00; F25D29/001; F25D2700/00; F25D2700/16
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
146 words
An apparatus for preparing a recording medium for a freezing program by which the operating conditions of a liquefied gas freezing apparatus is controlled by changing the ambient temperature in each of a plurality of stages, comprising: an adiabatic chamber provided with a liquefied gas spraying device, an ambient temperature sensor, and a workpiece temperature sensor; a controller for (i) controlling the amount of a liquefied gas sprayed into the adiabatic chamber to reach a predetermined reached ambient temperature in each freezing stage in response to the temperature signals detected by the ambient temperature sensor and by the workpiece temperature sensor, and (ii) detecting the necessary elapsed time for the workpiece temperature to reach a specified temperature in each freezing stage; and a recording device which writes the data for the required time in each freezing stage detected by the controller on a program recording medium.
Claim 2
Independent Claim
146 words
An apparatus for preparing a recording medium for a freezing program by which the operating conditions of a liquefied gas freezing apparatus is controlled by changing the ambient temperature in each of a plurality of stages, comprising: an adiabatic chamber provided with a liquefied gas spraying device, an ambient temperature sensor, and a workpiece temperature sensor; a controller for (i) controlling the amount of a liquefied gas sprayed into the adiabatic chamber to reach a predetermined reached ambient temperature in each freezing stage in response to the temperature signals detected by the ambient temperature sensor and by the workpiece temperature sensor, and (ii) detecting the necessary elapsed time for the workpiece temperature to reach a specified temperature in each freezing stage; and a recording device which writes the data for the required time in each freezing stage detected by the controller on a program recording medium.
Claim 3
Dependent Claim
58 words
A freezing method of continuously freezing a material by changing the ambient temperature thereof in each of a plurality of stages, comprising the steps: reading the data for the required time which is written on said recording medium obtained by the apparatus as claimed in claim 1; and controlling the freeze-processing time for said material in each stage.
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) | 1993-06-18 | 1993-12-18 | 1994-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-18 | 1997-12-18 | 1998-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-18 | 2001-12-18 | 2002-06-19 | $7700.00 | Window Closed / Lapsed |