US4184159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and installation for temperature control in a silo
Assignee: Nils Weibull AB
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Filing: 1977-12-05
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Granted: 1980-01-15
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Expires: 1997-12-05
Abstract
Abstract The disclosure relates to a method for silage temperature control in a silo. Measurement transmitters are placed at points where it is desirable to check the temperature of the silage located in the silo. These measurement transmitters are activated, on temperature control, by means of an activation transmitter with an antenna. On activation, the measurement transmitters transmit a signal which is related to the ambient temperature, this signal being received by a receiver. If a measurement transmitter indicates a temperature deviating from a predetermined norm, it is localized by direction finding.
Inventors
- 👤 Sven A. Andersson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:56
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/02; H; H04; H04L; H04L67/00; H04L67/01; H04L67/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
106 words
An installation for carrying out temperature control in a silo (10), comprising; (a) measurement transmitters (11) which are operative, on activation, to transmit a signal related to the ambient temperature of each said transmitter (11), and are intended to be placed at suitable points for temperature control within the silage; (b) a transmitter (18) for activating the measurement transmitters (11); (c) a receiver (13) for selectively receiving the signals transmitted by the measurement transmitters; and (d) a direction finder (15) for localizing each separate measurement transmitter (11) while each said measurement transmitter (11) is actuated by said transmitter (18) and is transmitting its temperature related signal.
Claim 2
Dependent Claim
106 words
An installation for carrying out temperature control in a silo (10), comprising; (a) measurement transmitters (11) which are operative, on activation, to transmit a signal related to the ambient temperature of each said transmitter (11), and are intended to be placed at suitable points for temperature control within the silage; (b) a transmitter (18) for activating the measurement transmitters (11); (c) a receiver (13) for selectively receiving the signals transmitted by the measurement transmitters; and (d) a direction finder (15) for localizing each separate measurement transmitter (11) while each said measurement transmitter (11) is actuated by said transmitter (18) and is transmitting its temperature related signal.
Claim 3
Dependent Claim
20 words
The installation as recited in claim 1, wherein said direction finder (15) is coupled to a field strength meter (16).
Claim 4
Dependent Claim
32 words
The installation as recited in claim 1, wherein the output signal of the measurement transmitters is pitch-modulated with an audible pitch whose level is related to the temperature about each measurement transmitter.
Claim 5
Dependent Claim
24 words
The installation as recited in claim 1, wherein a register device (14) is provided for registering the signals transmitted by the measurement transmitters (11).
Claim 6
Independent Claim
151 words
A method for determining the temperature at various locations in silage within a silo, said method comprising the steps of: placing measurement transmitters at locations throughout the silage within the silo, each of said measurement transmitters being actuable by an external signal of predetermined characteristics, each of said measurement transmitters retransmitting said external signal after processing said signal by means of its temperature sensor so that at least one characteristic of the retransmitted signal is related to the ambient temperature of said measurement transmitter; selectively actuating at least one of said measurement transmitters by means of said external signal; indicating the ambient temperature of said at least one of said measurement transmitters through signal receiving means which receive said retransmitted signal; and selectively determining the location of a measurement transmitter by direction finding means while said measurement transmitter is actuated by an external signal and is transmitting its temperature related signal.
Claim 7
Independent Claim
151 words
A method for determining the temperature at various locations in silage within a silo, said method comprising the steps of: placing measurement transmitters at locations throughout the silage within the silo, each of said measurement transmitters being actuable by an external signal of predetermined characteristics, each of said measurement transmitters retransmitting said external signal after processing said signal by means of its temperature sensor so that at least one characteristic of the retransmitted signal is related to the ambient temperature of said measurement transmitter; selectively actuating at least one of said measurement transmitters by means of said external signal; indicating the ambient temperature of said at least one of said measurement transmitters through signal receiving means which receive said retransmitted signal; and selectively determining the location of a measurement transmitter by direction finding means while said measurement transmitter is actuated by an external signal and is transmitting its temperature related signal.
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) | 1983-01-14 | 1983-07-16 | 1984-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-14 | 1987-07-16 | 1988-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-14 | 1991-07-16 | 1992-01-15 | $7700.00 | Window Closed / Lapsed |