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Patent US3731294A successfully refreshed from Google Patents.
US3731294A
Expired / Lapsed
US
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Monitoring system
Assignee: Hubbell Inc
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Filing: 1971-08-24
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Granted: 1973-05-01
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Expires: 1991-08-24
Abstract
Abstract A monitoring system for manufacturing or processing operations which is highly flexible and adaptable to provide a number of diverse monitoring functions. The system includes a highly sensitive sensor having a pressure switch and a resistance probe which may be connected in a number of diverse ways to provide different combinations of sensing functions; a resistance bridge connected to the pressure switch and resistance probe which becomes unbalanced when the predetermined event is sensed; an amplifier for amplifying the unbalance of the bridge; and an electronic switch controlled by the resistance bridge to provide an output signal when the event is sensed. The output signal may be connected directly to an indicator and control section for indicating the sensed event or it may be coupled through a master timer under the control of a master sensor or clock. The indicator includes a latch and nonlatch mode and provides an output signal to a master control which, through appropriate contact logic, can initiate a variety of control functions as desired.
Inventors
- 👤 L Vass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:07
CPC Classifications
G; G08; G08B; G08B23/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
113 words
A monitoring system comprising: a plurality of highly sensitive sensor means each of which are positioned to sense a particular predetermined condition; a plurality of indicator means each of which are connected to individual ones of said plurality of sensor means for giving an indication of the occurrence of the particular predetermined condition of its associated sensor means, each of said indicator means including means for providing an output signal indicative of the occurrence of the particular predetermined condition; and master control means connected to each of said plurality of indicator means to receive each of said output signals therefrom and to initiate a predetermined control upon the receipt of said output signals.
Claim 2
Dependent Claim
113 words
A monitoring system comprising: a plurality of highly sensitive sensor means each of which are positioned to sense a particular predetermined condition; a plurality of indicator means each of which are connected to individual ones of said plurality of sensor means for giving an indication of the occurrence of the particular predetermined condition of its associated sensor means, each of said indicator means including means for providing an output signal indicative of the occurrence of the particular predetermined condition; and master control means connected to each of said plurality of indicator means to receive each of said output signals therefrom and to initiate a predetermined control upon the receipt of said output signals.
Claim 3
Dependent Claim
52 words
The system of claim 1 further including a master timer means connected between said plurality of sensor means and said plurality of indicator means for providing signals representative of sensed conditions from said sensor means to their respective indicator means only when a master signal is supplied to said master timer means.
Claim 4
Dependent Claim
15 words
The system of claim 2 wherein said master signal is derived from a master sensor.
Claim 5
Dependent Claim
60 words
The system of claim 2 wherein said master timer means comprises a plurality of AND gates each of which includes: a first input connected to the outputs of said plurality of sensor means; a second input connected to said master signal; and an output connected to the individual one of said plurality of indicator means with which it is associated.
Claim 6
Dependent Claim
80 words
The system of claim 4 wherein each of said plurality of sensor means includes: sensing means for sensing the existence of a predetermined condition; resistance bridge means connected to said sensing device means which becomes unbalanced when the predetermined condition is sensed; amplifier means connected to said resistance bridge means for amplifying the unbalancing of said resistance bridge means; and electronic switch means connected to said resistance bridge means for providing an output signal when the predetermined condition is sensed.
Claim 7
Dependent Claim
70 words
The system of claim 1 wherein each of said plurality of indicator means includes an illuminating means connected between a source of voltage and a normally open electronic switch; and wherein a signal from said individual one of said plurality of sensors with which said indicator means is associated is connected to turn said electronic switch on thereby closing a path through said illuminating means causing it to be energized.
Claim 8
Dependent Claim
45 words
The system of claim 6 wherein each of said indicator means further includes a memory sectioN which may be selectively connected to said electronic switch to maintain said electronic switch on after the signal from the associated individual sensor means indicating a sensed condition terminates.
Claim 9
Dependent Claim
45 words
The system of claim 7 wherein said memory section includes a capacitor adapted to be charged from a source of voltage, a reset switch for disconnecting the capacitor from said source voltage and a resistor connected in parallel to said capacitor for discharging said capacitor.
Claim 10
Dependent Claim
80 words
The system of claim 8 wherein each of said plurality of sensor means includes: sensing means for sensing the existence of a predetermined condition; resistance bridge means connected to said sensing device means which becomes unbalanced when the predetermined condition is sensed; amplifier means connected to said resistance bridge means for amplifying the unbalancing of said resistance bridge means; and electronic switch means connected to said resistance bridge means for providing an output signal when the predetermined condition is sensed.
Claim 11
Dependent Claim
80 words
The system of claim 1 wherein each of said plurality of sensor means includes: sensing means for sensing the existence of a predetermined condition; resistance bridge means connected to said sensing device means which becomes unbalanced when the predetermined condition is sensed; amplifier means connected to said resistance bridge means for amplifying the unbalancing of said resistance bridge means; and electronic switch means connected to said resistance bridge means for providing an output signal when the predetermined condition is sensed.
Claim 12
Dependent Claim
13 words
The system of claim 10 wherein said sensing means is a pressure switch.
Claim 13
Dependent Claim
13 words
The system of claim 10 wherein said sensing means is a resistance probe.
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) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |