US3894244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power limit and control system
Assignee: Ross Hill Controls Corp
•
Filing: 1973-10-03
•
Granted: 1975-07-08
•
Expires: 1993-10-03
Abstract
Abstract A new and improved power limit and control system for determining the power output capability of a group of power sources and limiting the power drawn by a number of loads driven by the power sources to the power capabilities of the sources.
Inventors
- 👤 Ross K Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:44
CPC Classifications
H; H02; H02J; H02J3/00; H02J3/12; H02J3/14; H02J2105/00; H02J2105/50; H02J2105/52; Y; Y02; Y02B; Y02B70/00; Y02B70/30; Y02B70/3225; Y04; Y04S; Y04S20/00; Y04S20/20; Y04S20/222
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
7 words
sensing the current output from the sources;
Claim 2
Dependent Claim
7 words
sensing the current output from the sources;
Claim 3
Dependent Claim
15 words
Current sensor means for sensing the current output from the plurality of power sources; and
Claim 4
Dependent Claim
15 words
Current sensor means for sensing the current output from the plurality of power sources; and
Claim 5
Dependent Claim
59 words
A power limit system for limiting the power drawn from a plurality of power sources by a plurality of loads, each of the loads having drive control circuits therewith, to a magnitude within the output capabilities of such sources, comprising: a. sensor means for sensing the most heavily loaded of the plurality of power sources, said sensor means comprising:
Claim 6
Dependent Claim
59 words
A power limit system for limiting the power drawn from a plurality of power sources by a plurality of loads, each of the loads having drive control circuits therewith, to a magnitude within the output capabilities of such sources, comprising: a. sensor means for sensing the most heavily loaded of the plurality of power sources, said sensor means comprising:
Claim 7
Dependent Claim
24 words
The system of claim 1, wherein said current sensor means comprises: means for sensing the largest current output from the plurality of power sources.
Claim 8
Dependent Claim
70 words
Kilowatt sensor means for sensing the kilowatt output from the plurality of power sources. b. comparator means for comparing the output of said sensor means with a reference power level; and c. control means responsive to said comparator means for energizing the drive control circuits of the loads to limit the power drawn from the group of power sources to a magnitude within the output capabilities of the power sources.
Claim 9
Dependent Claim
70 words
Kilowatt sensor means for sensing the kilowatt output from the plurality of power sources. b. comparator means for comparing the output of said sensor means with a reference power level; and c. control means responsive to said comparator means for energizing the drive control circuits of the loads to limit the power drawn from the group of power sources to a magnitude within the output capabilities of the power sources.
Claim 10
Dependent Claim
65 words
sensing the kilowatt output from the sources; b. comparing the power output of the most heavily loaded of the power sources with a reference power level; and c. energizing the drive control circuits of the loads to limit the power drawn from the group of power sources to a magnitude within the output capabilities of the power sources when the reference power level is reached.
Claim 11
Dependent Claim
65 words
sensing the kilowatt output from the sources; b. comparing the power output of the most heavily loaded of the power sources with a reference power level; and c. energizing the drive control circuits of the loads to limit the power drawn from the group of power sources to a magnitude within the output capabilities of the power sources when the reference power level is reached.
Claim 12
Dependent Claim
24 words
The system of claim 1, wherein said kilowatt sensor means comprises: means for sensing the largest kilowatt output from the plurality of power sources.
Claim 13
Dependent Claim
33 words
The system of claim 1, wherein said sensor means comprises: means for forming a signal indicating the magnitude of the power output from the most heavily loaded of the plurality of power sources.
Claim 14
Dependent Claim
15 words
The system of claim 1, further including: means for establishing a predetermined reference power level.
Claim 15
Dependent Claim
18 words
The system of claim 1, further including: output indicator means for indicating the output of said comparator means.
Claim 16
Dependent Claim
25 words
The system of claim 1, further including: monitor limit indicator means for indicating when the plurality of loads are drawing power above a power threshold.
Claim 17
Dependent Claim
21 words
The system of claim 7, wherein said monitor limit indicator means includes: switch means for energizing said monitor limit indicator means.
Claim 18
Dependent Claim
33 words
The system of claim 8, wherein said monitor limit indicator means further includes: threshold means for activating said switch means when the power drawn by the plurality of loads exceeds the power threshold.
Claim 19
Dependent Claim
48 words
The system of claim 1, further including: a. first monitor limit indicator means for indicating when the plurality of loads are drawing power above a first threshold level; and b. second monitor limit indicator means for indicating when the loads are drawing power above a second threshold level.
Claim 20
Dependent Claim
43 words
The system of claim 10, wherein: a. said first monitor limit indicator means includes swItch means for energizing said first monitor limit indicator means; and b. said second monitor limit indicator means includes switch means for energizing said second monitor limit indicator means.
Claim 21
Dependent Claim
66 words
The system of claim 11, wherein: a. said first monitor limit indicator means includes threshold means for activating said switch means when the power drawn by the plurality of loads exceeds the first power threshold; and b. said second monitor limit indicator means includes said threshold means for activating said switch means when the power drawn by the plurality of loads exceeds the second power threshold.
Claim 22
Independent Claim
130 words
A method of monitoring the power capability of a group of power sources having drive control circuits and limiting the power drawn from such sources to a magnitude within the capabilities of such sources, comprising the steps of: a. sensing the most heavily loaded of the power sources, said step of sensing comprising the steps of: 1. sensing the current output from the sources; 2. sensing the kilowatt output from the sources; b. comparing the power output of the most heavily loaded of the power sources with a reference power level; and c. energizing the drive control circuits of the loads to limit the power drawn from the group of power sources to a magnitude within the output capabilities of the power sources when the reference power level is reached.
Claim 23
Independent Claim
130 words
A method of monitoring the power capability of a group of power sources having drive control circuits and limiting the power drawn from such sources to a magnitude within the capabilities of such sources, comprising the steps of: a. sensing the most heavily loaded of the power sources, said step of sensing comprising the steps of: 1. sensing the current output from the sources; 2. sensing the kilowatt output from the sources; b. comparing the power output of the most heavily loaded of the power sources with a reference power level; and c. energizing the drive control circuits of the loads to limit the power drawn from the group of power sources to a magnitude within the output capabilities of the power sources when the reference power level is reached.
Claim 24
Dependent Claim
33 words
The method of claim 13, wherein said steps of sensing comprise the steps of: a. sensing the largest current output from the sources; and b. sensing the largest kilowatt output from the sources.
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) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |