Patent US3655052A successfully refreshed from Google Patents.
US3655052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid contamination measuring system
Assignee: Alpha Advanced Systems Inc
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Filing: 1970-02-06
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Granted: 1972-04-11
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Expires: 1990-02-06
Abstract
Abstract A fluid contamination measuring system having a sampling valve to continuously withdraw a representative portion of a fluid stream, a moveable filter for filtering at least some of such stream portion and moving proportionally to the cumulative amount of particles retained and a sensor for detecting such movement remotely.
Inventors
- 👤 Josef E Friederichs
- 👤 Edgar E Friederichs
- 👤 Leo Weg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:38
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/06; G01N15/0606; G01N15/0618
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
185 words
A sensitive, reliable fluid contamination measuring system, adapted to continuously sample and separately measure the cumulative particle contamination in a fluid stream flowing in a completely enclosed conduit, comprising: a. sampling valve means adapted to continuously withdraw a small representative portion of a fluid stream flowing in a completely enclosed conduit; b. moveable filter means connected to said sampling valve means and adapted to receive a filter at least some of said fluid stream portion, the movement of said filter means being proportional to the cumulative amount of particles retained; c. sensing means connected to said filter means and adapted to detect directly and display remotely all movement of said filter means while passing said fluid stream through a completely enclosed sample conduit, said sensing means comprising (i) a completely enclosed sample conduit connected to said moveable filter means and said conduit and adapted to receive the filtered fluid stream portion and return it to the fluid stream, (ii) a transformer coil outside and adjacent to said sample conduit and (iii) a transformer core within said sample conduit and affixed to said moveable filter means.
Claim 2
Dependent Claim
185 words
A sensitive, reliable fluid contamination measuring system, adapted to continuously sample and separately measure the cumulative particle contamination in a fluid stream flowing in a completely enclosed conduit, comprising: a. sampling valve means adapted to continuously withdraw a small representative portion of a fluid stream flowing in a completely enclosed conduit; b. moveable filter means connected to said sampling valve means and adapted to receive a filter at least some of said fluid stream portion, the movement of said filter means being proportional to the cumulative amount of particles retained; c. sensing means connected to said filter means and adapted to detect directly and display remotely all movement of said filter means while passing said fluid stream through a completely enclosed sample conduit, said sensing means comprising (i) a completely enclosed sample conduit connected to said moveable filter means and said conduit and adapted to receive the filtered fluid stream portion and return it to the fluid stream, (ii) a transformer coil outside and adjacent to said sample conduit and (iii) a transformer core within said sample conduit and affixed to said moveable filter means.
Claim 3
Dependent Claim
59 words
A fluid contamination measuring system as stated in claim 1, wherein said sampling valve means comprises: a. a chamber and an axially offset inlet port and outlet port connected by said chamber and adapted to form turbulent fluid flow in said chamber; b. an orifice connected to said chamber; and, c. a sample outlet port connected to said orifice.
Claim 4
Dependent Claim
34 words
A fluid contamination measuring system as stated in claim 2, wherein the orifice in said sampling valve means includes an inlet slot adapted to slice off a representative portion of the turbulent fluid flow.
Claim 5
Dependent Claim
31 words
A fluid contamination measuring system as stated in claim 1, wherein said moveable filter means comprises: a. base spring means; and, b. retainer filter means mounted on said base spring means.
Claim 6
Dependent Claim
48 words
A fluid contamination measuring system as stated in claim 4, wherein said base spring means is a cylindrical bellows connected to said sample outlet port, and said retainer filter means is a pleated cone coaxially mounted in said bellows with its apex adjacent to said sample inlet port.
Claim 7
Dependent Claim
29 words
A fluid contamination measuring system as stated in claim 1, wherein said transformer coil includes position adjustment means adapted to select its location with respect to said transformer core.
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) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |