US2985566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metering valve and method of making same
Assignee: Pneumo Dynamics Corp
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Filing: 1957-04-05
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Granted: 1961-05-23
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Expires: 1977-04-05
Abstract
No abstract record available.
Inventors
- 👤 Vee C Tsien
- 👤 Charles H Bommerscheim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:46
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412; Y10T29/49416; Y10T29/49421; Y10T29/4998; Y10T29/49982
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A METHOD OF FORMING A HARD ANODIZE COATED VALVE WITH A SHARP METERING EDGE COMPRISING, FORMING A BLANK OF METAL WITH FIRST AND SECOND SURFACES THE PROJECTIONS OF WHICH WILL INTERSECT, A THIRD SURFACE CONNECTING SAID FIRST AND SECOND SURFACES AND SPACED INWARDLY FROM THE PROJECTED INTERSECTION OF SAID FIRST AND SECOND SURFACES, FORMING AN ADHERENT HARD ANODIZED COATING ON SAID FIRST, SECOND AND THIRD SURFACES AND THEREAFTER REMOVING A PORTION OF SAID COATING FROM SAID FIRST AND SECOND SURFACES UNTIL A SHARP EDGE IS FORMED BY THE COATING UPON SAID THIRD SURFACE AT THE INTERSECTION OF THE PLANES OF THE COATINGS ON SAID FIRST AND SECOND SURFACES.
Claim 2
Independent Claim
108 words
A METHOD OF FORMING A HARD ANODIZE COATED VALVE WITH A SHARP METERING EDGE COMPRISING, FORMING A BLANK OF METAL WITH FIRST AND SECOND SURFACES THE PROJECTIONS OF WHICH WILL INTERSECT, A THIRD SURFACE CONNECTING SAID FIRST AND SECOND SURFACES AND SPACED INWARDLY FROM THE PROJECTED INTERSECTION OF SAID FIRST AND SECOND SURFACES, FORMING AN ADHERENT HARD ANODIZED COATING ON SAID FIRST, SECOND AND THIRD SURFACES AND THEREAFTER REMOVING A PORTION OF SAID COATING FROM SAID FIRST AND SECOND SURFACES UNTIL A SHARP EDGE IS FORMED BY THE COATING UPON SAID THIRD SURFACE AT THE INTERSECTION OF THE PLANES OF THE COATINGS ON SAID FIRST AND SECOND SURFACES.
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) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |