Patent US2990781A successfully refreshed from Google Patents.
Patent US3251122A successfully refreshed from Google Patents.
US3251122A
Expired / Lapsed
US
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Method of making a diaphragm valve
Assignee: Grinnell Corp
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Filing: 1962-07-19
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Granted: 1966-05-17
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Expires: 1982-07-19
Abstract
No abstract record available.
Inventors
- 👤 Henry W Boteler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:34
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/28; B21C37/29; B21K; B21K1/00; B21K1/20; B21K1/24; F; F16; F16K; F16K27/00; F16K27/02; F16K27/0236; F16K7/00; F16K7/12; F16K7/14; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412; Y10T29/49416; Y10T29/49419; Y10T29/49421; Y10T29/4981
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A METHOD OF FORMING A DIAPHRAGM VALVE BODY FROM A HOLLOW CYLINDRICAL MEMBER AND A FLAT PLATE MEMBER, SAID METHOD COMPRISING: (A) EXPANDING A PORTION OF SAID CYLINDRICAL MEMBER (B) CUTTING AWAY FROM SAID CYLINDRICAL MEMBER PORTION THE PARTS THEREOF WHICH EXTEND BEYOND A FLAT PLANE LOCATED ON ONE SIDE OF SAID CYLINDRICAL MEMBER TO FORM: (1) AN OPENING THROUGH SAID MEMBER PORTION, (2) A FLANGE AROUND SAID OPENING HAVING INNER AND OUTER ANNULAR REGIONS, (C) FORMING IN SAID PLATE MEMBER AN OPENING WHICH: (1) CORRESPONDS TO BUT IS SLIGHTLY LARGER THAN SAID CYLINDRICAL MEMBER OPENING, (2) HAS AN ANNULAR SURFACE REGION THEREAROUND AND ADJACENT THERETO, (D) COVERING ONLY THE OUTER ANNULAR REGION OF SAID CYLINDRICAL MEMBER OPENING FLANGE WITH SAID ANNULAR PLATE SURFACE REGION, (E) SECURING SAID PLATE TO THE REMAINING UNCOVERED INNER ANNULAR REGION OF SAID CYLINDRICAL MEMBER OPENING FLANGE.
Claim 2
Independent Claim
142 words
A METHOD OF FORMING A DIAPHRAGM VALVE BODY FROM A HOLLOW CYLINDRICAL MEMBER AND A FLAT PLATE MEMBER, SAID METHOD COMPRISING: (A) EXPANDING A PORTION OF SAID CYLINDRICAL MEMBER (B) CUTTING AWAY FROM SAID CYLINDRICAL MEMBER PORTION THE PARTS THEREOF WHICH EXTEND BEYOND A FLAT PLANE LOCATED ON ONE SIDE OF SAID CYLINDRICAL MEMBER TO FORM: (1) AN OPENING THROUGH SAID MEMBER PORTION, (2) A FLANGE AROUND SAID OPENING HAVING INNER AND OUTER ANNULAR REGIONS, (C) FORMING IN SAID PLATE MEMBER AN OPENING WHICH: (1) CORRESPONDS TO BUT IS SLIGHTLY LARGER THAN SAID CYLINDRICAL MEMBER OPENING, (2) HAS AN ANNULAR SURFACE REGION THEREAROUND AND ADJACENT THERETO, (D) COVERING ONLY THE OUTER ANNULAR REGION OF SAID CYLINDRICAL MEMBER OPENING FLANGE WITH SAID ANNULAR PLATE SURFACE REGION, (E) SECURING SAID PLATE TO THE REMAINING UNCOVERED INNER ANNULAR REGION OF SAID CYLINDRICAL MEMBER OPENING FLANGE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-16 | 1969-11-15 | 1970-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-16 | 1973-11-15 | 1974-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-16 | 1977-11-15 | 1978-05-17 | $7700.00 | Window Closed / Lapsed |