Patent US4607962A successfully refreshed from Google Patents.
US4607962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Object temperature control device
Assignee: Omron Corp
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Filing: 1985-07-26
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Granted: 1986-08-26
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Expires: 2005-07-26
Abstract
Abstract An improved temperature control device which is arranged to generate comparative output ratio signals linearly varying successively from a small value to a large value in a manner as in time series in correspondence to sampling period, at each proportional period including several periods of the sampling period, and also to successively compare the output ratio and the comparative output ratio at each of the sampling period, thereby to turn on an output control section at a subsequent sampling period when the sampling output ratio is larger than the comparative output ratio.
Inventors
- 👤 Toshiaki Nagao
- 👤 Yasuyuki Sukimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:44
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/1906; G05D23/1913; G05D23/1917
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
171 words
In a temperature control device having means for detecting the temperature of an object whose temperature is to be controlled, a target temperature value setting means for setting a desired value of temperature for the object, an operation unit means for determining temperature sampling periods and for effecting a predetermined calculation of an on/off output ratio which is based upon the ratio of said detected object temperature to said target temperature value, and means for producing an output based upon said on/off output ratio, wherein said output is to control means to maintain the temperature of said object at substantially the set desired value, the improvement comprising: means for generating comparative output ratio signals during each sampling period by said operative unit means, and means for periodically comparing said on/off output ratio to said comparative output ratio signals by said operative unit means, whereby said output for control of said temperature is turned on in the next subsequent sampling period when said output ratio is greater than said comparative output ratio.
Claim 2
Dependent Claim
171 words
In a temperature control device having means for detecting the temperature of an object whose temperature is to be controlled, a target temperature value setting means for setting a desired value of temperature for the object, an operation unit means for determining temperature sampling periods and for effecting a predetermined calculation of an on/off output ratio which is based upon the ratio of said detected object temperature to said target temperature value, and means for producing an output based upon said on/off output ratio, wherein said output is to control means to maintain the temperature of said object at substantially the set desired value, the improvement comprising: means for generating comparative output ratio signals during each sampling period by said operative unit means, and means for periodically comparing said on/off output ratio to said comparative output ratio signals by said operative unit means, whereby said output for control of said temperature is turned on in the next subsequent sampling period when said output ratio is greater than said comparative output ratio.
Claim 3
Dependent Claim
18 words
A temperature control device as claimed in claim 1, wherein said temperature detecting means is a thermocouple thermometer.
Claim 4
Dependent Claim
18 words
A temperature control device as claimed in claim 1, wherein said temperature detecting means is a thermistor thermometer.
Claim 5
Dependent Claim
17 words
A temperature control device as claimed in claim 1, wherein said operation unit means is a micro-processor.
Claim 6
Dependent Claim
36 words
The temperature control device as claimed in claim 1 wherein said comparative output signal varies linearly from a small value to a larger value in a time series corresponding to a plurality of said sampling periods.
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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) | 1989-08-25 | 1990-02-24 | 1990-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-25 | 1994-02-24 | 1994-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-25 | 1998-02-24 | 1998-08-26 | $7700.00 | Window Closed / Lapsed |