US3272176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air knife
Assignee: EIDP Inc
•
Filing: 1964-04-13
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Granted: 1966-09-13
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Expires: 1984-04-13
Abstract
No abstract record available.
Inventors
- 👤 Saydlowski Bernard Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:24
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/74; B; B05; B05C; B05C11/00; B05C11/02; B05C11/06; D; D06; D06B; D06B1/00; D06B1/08; D06B15/00; D06B15/09; D06B3/00; D06B3/10; D21; D21H; D21H25/00; D21H25/08; D21H25/16; D21H5/00; D21H5/0005; D21H5/006; D21H5/0062; D21H5/007; D06B2700/00; D06B2700/27
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
AN AIR KNIFE WHICH COMPRISES (A) AN ELONGATED BODY HAVING CLOSED ENDS AND FORMING A PLENUM CHAMBER; (B) A LENGTHWISE SLOT IN THE WALL OF SAID CHAMBER FORMING A FLUID EXIT SLOT, THE OUTER SURFACE OF THE BODY ADJACENT SAID SLOT HAVING PLANAR SURFACES EXTENDING LATERALLY FROM SAID SLOT; (C) A PAIR OF LIP MEMBERS DISPOSED ADJACENT SAID SLOT THE ENDS OF THE LIP MEMBERS HAVING PLANAR SURFACES THAT INTERFIT WITH THE RESPECTIVE PLANAR SURFACES OF THE BODY WHEN THE LIP MEMBERS AND ATTACHED THERETO, AT LEAST ONE LIP MEMBER BEING FASTENED TO THE BODY FOR SLIDEABLE ADJUSTMENT, THEREOF THE OUTER PORTIONS OF THE LIP MEMBERS FORMING AN ORIFICE NEAR THEIR OUTER EXTEEMITIES; (D) BORED SLOTS IN THE INNER WALL OF SAID CHAMBER ADJACENT THE PLANAR SURFACES AND COATIVE OPENINGS IN THE WALLS OF THE CHAMBER COMMUNICATING WITH THE SLOTS AND ENGAGEABLE OPENING IN THE PLANAR ENDS OF THE LIP MEMBERS;
Claim 2
Dependent Claim
151 words
AN AIR KNIFE WHICH COMPRISES (A) AN ELONGATED BODY HAVING CLOSED ENDS AND FORMING A PLENUM CHAMBER; (B) A LENGTHWISE SLOT IN THE WALL OF SAID CHAMBER FORMING A FLUID EXIT SLOT, THE OUTER SURFACE OF THE BODY ADJACENT SAID SLOT HAVING PLANAR SURFACES EXTENDING LATERALLY FROM SAID SLOT; (C) A PAIR OF LIP MEMBERS DISPOSED ADJACENT SAID SLOT THE ENDS OF THE LIP MEMBERS HAVING PLANAR SURFACES THAT INTERFIT WITH THE RESPECTIVE PLANAR SURFACES OF THE BODY WHEN THE LIP MEMBERS AND ATTACHED THERETO, AT LEAST ONE LIP MEMBER BEING FASTENED TO THE BODY FOR SLIDEABLE ADJUSTMENT, THEREOF THE OUTER PORTIONS OF THE LIP MEMBERS FORMING AN ORIFICE NEAR THEIR OUTER EXTEEMITIES; (D) BORED SLOTS IN THE INNER WALL OF SAID CHAMBER ADJACENT THE PLANAR SURFACES AND COATIVE OPENINGS IN THE WALLS OF THE CHAMBER COMMUNICATING WITH THE SLOTS AND ENGAGEABLE OPENING IN THE PLANAR ENDS OF THE LIP MEMBERS;
References Cited (Backward Citations)
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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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |