US3751907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inertial air cleaner for gas turbine
Assignee: Caterpillar Inc
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Filing: 1971-12-08
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Granted: 1973-08-14
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Expires: 1991-12-08
Abstract
Abstract The air intake to a gas turbine comprises a plurality of stationary, spiralled blades mounted therein for centrifugally discharging dirt ladened air radially outwardly to a restricted passageway which communicates with a collector. Clean air enters a larger, circumferentially disposed passageway positioned inwardly of the restricted passageway to communicate substantially clean air to the compressor stage of the turbine.
Inventors
- 👤 H Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:37
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/04; F02C7/05; F02C7/052
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
153 words
An inertial type air cleaner adapted for attachment to the inlet of an inertial combustion engine comprising an annular housing disposed on a longitudinal axis thereof, means defining an inlet and an outlet disposed in axially spaced apart relationship in said housing, an annular member attached within said housing between said inlet and outlet, vane means attached in circumferentially spaced relationship on said member, adjacent to said inlet, to extend radially outwardly from said axis to define first passage means for centrifugally expelling air radially outwardly therefrom, second passage means defined between said member and said housing to extend radially inwardly towards said axis to communicate said first passage means with said outlet, and means defining third passage means, having an inlet positioned radially outwardly from said second passage means, and at the intersection of said first and second passage means, communicating with said first passage means for receiving centrifugally expelled air therefrom.
Claim 2
Dependent Claim
153 words
An inertial type air cleaner adapted for attachment to the inlet of an inertial combustion engine comprising an annular housing disposed on a longitudinal axis thereof, means defining an inlet and an outlet disposed in axially spaced apart relationship in said housing, an annular member attached within said housing between said inlet and outlet, vane means attached in circumferentially spaced relationship on said member, adjacent to said inlet, to extend radially outwardly from said axis to define first passage means for centrifugally expelling air radially outwardly therefrom, second passage means defined between said member and said housing to extend radially inwardly towards said axis to communicate said first passage means with said outlet, and means defining third passage means, having an inlet positioned radially outwardly from said second passage means, and at the intersection of said first and second passage means, communicating with said first passage means for receiving centrifugally expelled air therefrom.
Claim 3
Dependent Claim
19 words
The invention of claim 1 wherein said vane means comprises a plurality of vanes circumferentially spaced about said axis.
Claim 4
Dependent Claim
20 words
The invention of claim 2 wherein each of said vanes is disposed in parallel relationship with respect to said axis.
Claim 5
Dependent Claim
43 words
The invention of claim 2 wherein each of said vanes, when viewed in cross section transverse to said axis, has a radius of curvature which gradually decreases in magnitude, substantially along the full length thereof, from said axis radially outwardly towards said housing.
Claim 6
Dependent Claim
53 words
The invention of claim 4 wherein each of said vanes, when viewed in cross section transverse to said axis, has a radial inner portion disposed in approximate tangential relationship and closely adjacent to said axis and a radial outer portion disposed in approximate tangential relationship to circular inner wall portions of said housing.
Claim 7
Dependent Claim
32 words
The invention of claim 4 wherein each pair of circumferentially adjacent vanes define a passage of said first passage means therebetween, said pair of vanes generally diverging radially outwardly from said axis.
Claim 8
Dependent Claim
55 words
The invention of claim 6 wherein a first end of each of said passages of said first passage means, positioned at said inlet, has a substantially larger cross sectional area than a second end thereof, positioned at said second passage means, when each of said passages is viewed in cross section longitudinally along said axis.
Claim 9
Dependent Claim
22 words
The invention of claim 1 wherein said housing, said member and said vane means are each composed of a non-metallic plastic material.
Claim 10
Dependent Claim
62 words
The invention of claim 1 wherein the inlet to said third passage means is annular, has a cross sectional area substantially less than that of each of said first and second passage means and is disposed in approximate parallel relationship with respect to said axis, said third passage means further comprising a radially inwardly extending portion communicating with a contaminant collecting means.
Claim 11
Dependent Claim
49 words
The invention of claim 9 wherein said collecting means comprises eccentrically disposed inner and outer wall portions formed on said housing to define a generally annular collecting chamber about said axis having a gradually enlarged cross sectional area from an upper portion to a diametrically opposed lower portion thereof.
Claim 12
Dependent Claim
32 words
The invention of claim 10 wherein said collecting means further comprises a collecting box secured to said housing to have a chamber thereof communicate with the lower portioN of said collecting chamber.
Claim 13
Dependent Claim
26 words
The invention of claim 1 further comprising a turbine having a compressor stage, said housing attached to said compressor stage at the outlet of said housing.
References Cited (Backward Citations)
US2802618A
Cited
US3354621A
Cited
US3380711A
Cited
US3444672A
Cited
US3616616A
Cited
US3513641A
Cited
US3557537A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |