US3729024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monitoring apparatus responsive to operation of cooperative equipment at more than a predetermined rate
Assignee: Individual
•
Filing: 1970-10-14
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Granted: 1973-04-24
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Expires: 1990-10-14
Abstract
Abstract For cooperation with an apparatus which must function periodically in a manner which is manifested by physical movement, a monitoring device which responds to the physical movement by forming a pneumatic pulse of a predetermined length, the pulse being fed to an accumulator and stored therein, the accumulator being steadily bled off; a pressure above a predetermined level is required within the accumulator to hold open a valve which is operated should the pressure drop below a predetermined level, the valve controlling continued operation of the cooperative equipment. Should the pressure within the accumulator drop below the level, the monitoring equipment shuts down the cooperative equipment.
Inventors
- 👤 R Harrah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:33
CPC Classifications
F; F16; F16N; F16N29/00; F16N29/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86405
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
272 words
Monitoring apparatus responsive to equipment which is to be monitored, comprising: an output valve means having at least two operative conditions, one of the conditions being indicative of continued operation of a piece of equipment to be monitored, and the other condition being indicative of some other condition of such equipment to be monitored; a pneumatic operator connected to said output valve for changing its operative condition; an accumulator connected to said operator for applying pressure thereto which changes the operative condition of said output valve; a second valve adapted to be connected with a pressure source; a second valve operator connected to said second valve for changing its operative condition, said second valve operator being arranged to open said second valve periodically in response to operation of such equipment to be monitored; means for returning said second valve operator to a closed position; means for communicating pressure from said second valve to said accumulator, said means further providing a controlled flow of pressure fluid from the source connected to said second valve; and including a third valve means; a third valve operator means closing said third valve means on operation; a line connected from the output of said second valve to said third valve operator means; delay means in said line for creating a time delay in pressure applied to said third valve operator after operation of said second valve; said third valve means forming a pressure pulse of predetermined duration as determined by the time delay of said delay means to said third valve operator means; and, an additional means cooperative with said accumulator for bleeding pressure within said accumulator.
Claim 2
Dependent Claim
272 words
Monitoring apparatus responsive to equipment which is to be monitored, comprising: an output valve means having at least two operative conditions, one of the conditions being indicative of continued operation of a piece of equipment to be monitored, and the other condition being indicative of some other condition of such equipment to be monitored; a pneumatic operator connected to said output valve for changing its operative condition; an accumulator connected to said operator for applying pressure thereto which changes the operative condition of said output valve; a second valve adapted to be connected with a pressure source; a second valve operator connected to said second valve for changing its operative condition, said second valve operator being arranged to open said second valve periodically in response to operation of such equipment to be monitored; means for returning said second valve operator to a closed position; means for communicating pressure from said second valve to said accumulator, said means further providing a controlled flow of pressure fluid from the source connected to said second valve; and including a third valve means; a third valve operator means closing said third valve means on operation; a line connected from the output of said second valve to said third valve operator means; delay means in said line for creating a time delay in pressure applied to said third valve operator after operation of said second valve; said third valve means forming a pressure pulse of predetermined duration as determined by the time delay of said delay means to said third valve operator means; and, an additional means cooperative with said accumulator for bleeding pressure within said accumulator.
Claim 3
Dependent Claim
22 words
The invention of claim 1 including a pulse counter means connected to said accumulator for measuring the number of pulses applied thereto.
Claim 4
Dependent Claim
83 words
The invention of claim 1 wherein said output valve and said pneumatic operator are further defined to include: a return spring maintaining said output valve in a predetermined position; said valve operator means operatively being connected with said accumulator for maintaining said output valve in a quiescent condition so long as said accumulator maintains pressure therewithin above a predetermined level, said valve operator operating to reverse the condition of said output valve when the pressure within said accumulator drops below said predetermined level.
Claim 5
Dependent Claim
51 words
The invention of claim 1 wherein the last named means includes: an orifice; a line used in common with said means communicating pressure from said second valve to said accumulator; and, said second valve having a position opening said line to atmosphere through said orifice, said line and said second valve.
Claim 6
Dependent Claim
17 words
The invention of claim 1 including means biasing said output valve against operation of said pneumatic operator.
Claim 7
Dependent Claim
12 words
The invention of claim 1 wherein said delay means includes an orifice.
Claim 8
Dependent Claim
13 words
The invention of claIm 6 including a check valve parallel to said orifice.
Claim 9
Dependent Claim
18 words
The invention of claim 1 including means biasing said second valve against operation of said second valve operator.
Claim 10
Dependent Claim
20 words
The invention of claim 1 including means biasing said third valve means against operation of said third valve operator means.
References Cited (Backward Citations)
US3326237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |