Patent US3824823A successfully refreshed from Google Patents.
US3824823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel filter testing apparatus
Assignee: United States Department of the Navy
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Filing: 1973-02-01
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Granted: 1974-07-23
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Expires: 1993-02-01
Abstract
Abstract The invention disclosed herein provides an improved apparatus and system for testing the efficiency of fluid filters by providing an automatic, continuously operating, test apparatus to accurately measure the water and solid contaminants flowing into the fluid or fuel filter and to measure water and contaminants passed therethru.
Inventors
- 👤 A Pontello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:11
CPC Classifications
B; B01; B01D; B01D35/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
206 words
An improved test system for testing fluid filters for jet fuels comprising; a. a test housing for holding a filter to be tested, said housing having input and output connections; b. a fuel storage tank containing fuel substantially free of contaminants; c. an input coupling means connecting said fuel storage tank to said input of said housing; d. output coupling means coupled to receive fuel from said housing and to return said fuel to said fuel storage tank; e. a water contaminant injection and metering system to inject a variable, determinable amount of water connected to the input side of said housing; f. a solid contaminant injection system coupled to said input coupling means for injecting solids into the input side of said test section; g. a fluid pump in said input coupling means for pumping contaminated fuels to said input side of said housing; and h. means including inlet and outlet pressure gages coupled to the input and output of said housing and input and output samplers connected to said input and output of said housing to continuously monitor the pressure drop across said housing and to continuously measure the input and output contaminants to measure the efficiency of a filter in said test housing.
Claim 2
Dependent Claim
206 words
An improved test system for testing fluid filters for jet fuels comprising; a. a test housing for holding a filter to be tested, said housing having input and output connections; b. a fuel storage tank containing fuel substantially free of contaminants; c. an input coupling means connecting said fuel storage tank to said input of said housing; d. output coupling means coupled to receive fuel from said housing and to return said fuel to said fuel storage tank; e. a water contaminant injection and metering system to inject a variable, determinable amount of water connected to the input side of said housing; f. a solid contaminant injection system coupled to said input coupling means for injecting solids into the input side of said test section; g. a fluid pump in said input coupling means for pumping contaminated fuels to said input side of said housing; and h. means including inlet and outlet pressure gages coupled to the input and output of said housing and input and output samplers connected to said input and output of said housing to continuously monitor the pressure drop across said housing and to continuously measure the input and output contaminants to measure the efficiency of a filter in said test housing.
Claim 3
Dependent Claim
40 words
The improved test system of claim 1 wherein said water contaminant injection system includes a filter to provide clean water free of contaminants and a flow means to record the amount of water injected into the fuel as a contaminant.
Claim 4
Dependent Claim
59 words
The device of claim 1 wherein there is provided in the solid contaminant injection system a storage tank containing fuel and solid contaminants and a slurry, means for pumping said slurry into said fuel and means including a circulating pump for recirculating the slurry within the slurry tank to back up large solid contaminants to the desired contaminant range.
Claim 5
Dependent Claim
36 words
The systeM of claim 3 wherein a pressure relief system is provided between said main pump and said test system to by-pass the fuel when predetermined pressures are reached in the input of said test section.
Claim 6
Dependent Claim
49 words
The system of claim 4 wherein a clean up section in the outline of said test section is provided to continuously clean fuel after it passes the filter to be tested so that the main storage tank continuously supplies clean fuel to be injected by pre-determined amounts of contaminant.
References Cited (Backward Citations)
US3478601A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |