Patent US4467637A successfully refreshed from Google Patents.
US4467637A
Expired / Lapsed
US
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Debris detection system and method
Assignee: Boeing Co
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Filing: 1982-12-28
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Granted: 1984-08-28
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Expires: 2002-12-28
Abstract
Abstract A debris detection system for detecting debris in a fluid flow in which both a primary and a secondary fluid flow from a fluid reservoir are maintained. The fluid reservoir is situated downstream of the system being served and receives the debris from the system being served. Within the reservoir the primary fluid flow is shielded from all but the colloidal debris received. All non-colloidal as well as colloidal debris is diverted to the secondary fluid flow where the amount and rate of debris accumulation is detected.
Inventors
- 👤 William E. Rumberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:39
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/06; B; B01; B01D; B01D35/00; B01D35/14; F; F16; F16N; F16N29/00
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
72 words
In a fluid system having a reservoir from which a primary flow and a secondary flow originate for serving a common system, a system for detecting debris originating in the common system being served, comprising: means for diverting debris from the common system being served to the secondary flow at its point of origin in the reservoir; monitoring means located in said secondary flow for detecting debris accumulation within the secondary flow.
Claim 2
Dependent Claim
72 words
In a fluid system having a reservoir from which a primary flow and a secondary flow originate for serving a common system, a system for detecting debris originating in the common system being served, comprising: means for diverting debris from the common system being served to the secondary flow at its point of origin in the reservoir; monitoring means located in said secondary flow for detecting debris accumulation within the secondary flow.
Claim 3
Dependent Claim
40 words
The system for detecting debris as defined in claim 1, wherein the means for diverting debris includes the bottom wall of the reservoir, said wall defining a downwardly sloping surface portion to the point of origin of the secondary flow.
Claim 4
Dependent Claim
46 words
The system for detecting debris as defined in claim 2, wherein the bottom wall of the reservoir slopes downwardly in the form of a cone to the point of origin of the secondary flow, said point of origin being located at the apex of said cone.
Claim 5
Dependent Claim
38 words
The system for detecting debris as defined in claim 2, wherein the means for diverting debris further includes shielding means for shielding the point of origin of the primary flow, thereby excluding debris from entering the primary flow.
Claim 6
Dependent Claim
28 words
The system for detecting debris as defined in claim 1, wherein the flow capacity of the primary flow is greater than the flow capacity of the secondary flow.
Claim 7
Dependent Claim
19 words
The system for detecting debris as defined in claim 1, further comprising: a pump for generating the secondary flow.
Claim 8
Dependent Claim
35 words
The system for detecting debris as defined in claim 6, wherein the monitoring means includes a filter and a differential pressure sensor both located downstream of the pump, for detecting the amount of debris accumulated.
Claim 9
Dependent Claim
46 words
The system for detectng debris as defined in claim 7, wherein the monitoring means further includes a screen located upstream of the pump and at the point of origin of the secondary flow for detecting the presence of metallic debris of at least a predetermined size.
Claim 10
Dependent Claim
37 words
The system for detecting debris as defined in claim 8, wherein the monitoring means further includes a magnetic chip detector located at the point of origin of the secondary flow, for detecting the presence of ferrous debris.
Claim 11
Dependent Claim
50 words
The system for detecting debris as defined in claim 1, wherein the means for diverting debris includes a downwardly sloping surface within the reservoir defining an opening and a perforated screen which extends from the opening in the downwardly sloping surface toward the point of origin of the secondary flow.
Claim 12
Dependent Claim
45 words
The system for detecting debris as defined in claim 10, wherein the means for diverting further includes a secondary flow container located within the reservoir and concentric with the perforated screen, the volume of said secondary flow container being less than that of the reservoir.
Claim 13
Dependent Claim
34 words
The system for detecting debris as defined in claim 11, wherein the secondary flow container includes an inwardly directed flange about its upper periphery which serves to retain debris within the secondary flow container.
Claim 14
Dependent Claim
29 words
The system for detecting debris as defined in claim 1, further comprising: display means connected to said monitoring means for providing a visual display indicative of the debris accumulation.
Claim 15
Dependent Claim
93 words
In a lubricating system having a reservoir from which a primary flow and a secondary flow originate, said secondary flow serving as an auxilliary source of lubrication in the event of failure of the primary flow, a system for detecting debris, comprising: means for diverting debris to the secondary flow at its point of origin in the reservoir; means for shielding the point of origin of the primary flow, thereby excluding debris from entering the primary flow; and monitoring means located in said secondary flow for detecting debris accumulation within the secondary flow.
Claim 16
Dependent Claim
93 words
In a lubricating system having a reservoir from which a primary flow and a secondary flow originate, said secondary flow serving as an auxilliary source of lubrication in the event of failure of the primary flow, a system for detecting debris, comprising: means for diverting debris to the secondary flow at its point of origin in the reservoir; means for shielding the point of origin of the primary flow, thereby excluding debris from entering the primary flow; and monitoring means located in said secondary flow for detecting debris accumulation within the secondary flow.
Claim 17
Dependent Claim
28 words
The system for detecting debris as defined in claim 14, wherein the flow capacity of the primary flow is greater than the flow capacity of the secondary flow.
Claim 18
Dependent Claim
96 words
The system for detecting debris as defined in claim 14, further comprising: a pump for generating the secondary flow, and wherein the monitoring means includes: a filter and a differential pressure sensor both located downstream of the pump for detecting the amount of debris accumulated; a filter located upstream of the pump and at the point of origin of the secondary flow for detecting the presence of metallic of at least a predetermined size, and a magnetic chip detector located at the point of origin of the secondary flow for detecting the presence of ferrous debris.
Claim 19
Dependent Claim
40 words
The system for detecting debris as defined in claim 16, wherein the means for diverting debris includes the bottom wall of the reservoir, said wall defining a downwardly sloping surface portion to the point of origin of the secondary flow.
Claim 20
Dependent Claim
46 words
The system for detecting debris as defined in claim 17, wherein the bottom wall of the reservoir slopes downwardly in the form of a cone to the point of origin of the secondary flow, said point of origin being located at the apex of said cone.
Claim 21
Dependent Claim
78 words
The system for detecting debris as defined in claim 16, wherein the means for diverting debris includes a downwardly sloping surface within the reservoir defining an opening, a perforated screen which extends from the opening in the downwardly sloping surface toward the point of origin of the secondary flow, and a secondary flow container located within the reservoir and concentric with the perforated screen, the volume of said secondary flow container being less than that of the reservoir.
Claim 22
Dependent Claim
34 words
The system for detecting debris as defined in claim 19, wherein the secondary flow container includes an inwardly directed flange about its upper periphery which serves to retain debris within the secondary flow container.
Claim 23
Dependent Claim
29 words
The system for detecting debris as defined in claim 20, further comprising: display means connected to said monitoring means for providing a visual display indicative of the debris accumulation.
Claim 24
Independent Claim
70 words
A method for detecting debris within a fluid system, said system having a reservoir from which a primary flow and a secondary flow originate, the method comprising the steps of: diverting debris to the secondary flow at its point of origin in the reservoir; shielding the point of origin of the primary flow, thereby excluding debris from entering the primary flow; and detecting the debris accumulation within the secondary flow.
Claim 25
Independent Claim
70 words
A method for detecting debris within a fluid system, said system having a reservoir from which a primary flow and a secondary flow originate, the method comprising the steps of: diverting debris to the secondary flow at its point of origin in the reservoir; shielding the point of origin of the primary flow, thereby excluding debris from entering the primary flow; and detecting the debris accumulation within the secondary flow.
Claim 26
Dependent Claim
22 words
The method for detecting debris as defined in claim 22, wherein the rate of debris accumulation within the secondary flow is detected.
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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) | 1987-08-28 | 1988-02-27 | 1988-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-28 | 1992-02-27 | 1992-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-28 | 1996-02-27 | 1996-08-28 | $7700.00 | Window Closed / Lapsed |