Patent US2709569A successfully refreshed from Google Patents.
US2709569A
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Impeller member and method of making same
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1948-08-28
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Granted: 1955-05-31
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Expires: 1968-08-28
Abstract
No abstract record available.
Inventors
- 👤 Milton S Roush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:13
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D7/16; F; F01; F01D; F01D5/00; F01D5/12; F01D5/28; F01D5/288; Y; Y02; Y02T; Y02T50/00; Y02T50/60; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/31504; Y10T428/31536
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
106 words
THE METHOD OF COATING METAL SURFACES WHICH COMPRISES APPLYING TO A SURFACE OF A REACTIVE METAL CAPABLE OF FORMING AN ADHERENT METAL OXIDE A LAYER OF A SOLUTION OF AN INCOMPLETELY CONDENSED ORGANOSILOXANE POLYMER CONTAINING RESIDUAL HYDROXYL GROUPS IN A HYDROCARBON SOLVENT, THE SOLUTION LAYER CONTAINING FROM 30 TO 60% SOLIDS BY WEIGHT, SUBSTANTIALLY REMOVING SAID SOLVENT AT ROOM TEMPERATURE AND HEATING THE COATED SURFACE TO A TEMPERATURE OF FROM 450 TO 650* F. FOR A PERIOD OF TIME SUFFICIENT TO CONDENSE THE POLYMER, THEREBY REACTING THE METAL SURFACE WITH THE POLYMER TO FORM AN ADHERENT METAL OXIDE LAYER BONDED TO THE POLYMER BY METAL-OXYGEN BONDS.
Claim 2
Independent Claim
106 words
THE METHOD OF COATING METAL SURFACES WHICH COMPRISES APPLYING TO A SURFACE OF A REACTIVE METAL CAPABLE OF FORMING AN ADHERENT METAL OXIDE A LAYER OF A SOLUTION OF AN INCOMPLETELY CONDENSED ORGANOSILOXANE POLYMER CONTAINING RESIDUAL HYDROXYL GROUPS IN A HYDROCARBON SOLVENT, THE SOLUTION LAYER CONTAINING FROM 30 TO 60% SOLIDS BY WEIGHT, SUBSTANTIALLY REMOVING SAID SOLVENT AT ROOM TEMPERATURE AND HEATING THE COATED SURFACE TO A TEMPERATURE OF FROM 450 TO 650* F. FOR A PERIOD OF TIME SUFFICIENT TO CONDENSE THE POLYMER, THEREBY REACTING THE METAL SURFACE WITH THE POLYMER TO FORM AN ADHERENT METAL OXIDE LAYER BONDED TO THE POLYMER BY METAL-OXYGEN BONDS.
Claim 3
Dependent Claim
183 words
AN IMPELLER BLADE FOR A COMPRESSOR COMPRISING A BASE PORTION FOR ATTACHMENT TO A SUOPPORT MEMBER AND AN AIRFOIL SECTION EXTENDING BEYOND SAID BASE PORTION, SAID BLADE HAVING A METALLIC AIRFOIL SURFACE ENVELOPED WITHIN A LAYER OF AN ORGANOSILOXANE POLYMER FIRMLY BONDED TO THE SURFACE BY A CHEMICAL REACTION WITH THE METAL SURFACE AND A METAL OXIDE LAYER INTERPOSED THEREBETWEEN, SAID POLYMER LAYER BEING LESS THAN 0.004 INCH THICK AND TO PERMIT HEATED AIR CURRENTS TO PERMEATE THE AREAS ADJACENT SAID WINDOWS, AN EDGE OF ONE OF SAID ENDS HAVING A REDUCED SHOULDER TO FIT IN NESTING RELATIONSHIP WITH THE NORMAL EDGE OF AN ADJACENT SECTION TO FORM A CONTINUOUS STREAMLINED ARRANGEMENT PERIMETRICALLY, DIHEDRALLY FORMED CORNER ELEMENTS HAVING SECURING FLANGES AND ADAPTED TO BE DISPOSED IN CONGRUENT RELATIONSHIP WITH CORNERS OF SAID ROOM, BRACKET MEANS SECURED TO STUDDING WITHIN SAID WALLS, STUD MEANS SECURING SAID STREAMLINED RADIANT HEATING ENCLOSURE MEANS TO SAID BRACKET MEANS, AND RIGHTANGULARLY FORMED BAYONET LOCK MEANS ON SAID TOP WALL OF SAID SECTIONS ADAPTED TO REMOVABLY SECURE EACH OF SAID SECTIONS TO ADJACENT SECTIONS AND TO SAID STUD MEANS.
Claim 4
Dependent Claim
183 words
AN IMPELLER BLADE FOR A COMPRESSOR COMPRISING A BASE PORTION FOR ATTACHMENT TO A SUOPPORT MEMBER AND AN AIRFOIL SECTION EXTENDING BEYOND SAID BASE PORTION, SAID BLADE HAVING A METALLIC AIRFOIL SURFACE ENVELOPED WITHIN A LAYER OF AN ORGANOSILOXANE POLYMER FIRMLY BONDED TO THE SURFACE BY A CHEMICAL REACTION WITH THE METAL SURFACE AND A METAL OXIDE LAYER INTERPOSED THEREBETWEEN, SAID POLYMER LAYER BEING LESS THAN 0.004 INCH THICK AND TO PERMIT HEATED AIR CURRENTS TO PERMEATE THE AREAS ADJACENT SAID WINDOWS, AN EDGE OF ONE OF SAID ENDS HAVING A REDUCED SHOULDER TO FIT IN NESTING RELATIONSHIP WITH THE NORMAL EDGE OF AN ADJACENT SECTION TO FORM A CONTINUOUS STREAMLINED ARRANGEMENT PERIMETRICALLY, DIHEDRALLY FORMED CORNER ELEMENTS HAVING SECURING FLANGES AND ADAPTED TO BE DISPOSED IN CONGRUENT RELATIONSHIP WITH CORNERS OF SAID ROOM, BRACKET MEANS SECURED TO STUDDING WITHIN SAID WALLS, STUD MEANS SECURING SAID STREAMLINED RADIANT HEATING ENCLOSURE MEANS TO SAID BRACKET MEANS, AND RIGHTANGULARLY FORMED BAYONET LOCK MEANS ON SAID TOP WALL OF SAID SECTIONS ADAPTED TO REMOVABLY SECURE EACH OF SAID SECTIONS TO ADJACENT SECTIONS AND TO SAID STUD MEANS.
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) | 1958-05-30 | 1958-11-29 | 1959-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-30 | 1962-11-29 | 1963-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-30 | 1966-11-29 | 1967-05-31 | $7700.00 | Window Closed / Lapsed |