US3183286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making unit filter assemblies
Assignee: American Air Filter Co Inc
•
Filing: 1961-07-31
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Granted: 1965-05-11
•
Expires: 1981-07-31
Abstract
No abstract record available.
Inventors
- 👤 John D Harms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:57
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/52; B01D46/521; B01D46/523; B01D29/00; B01D29/01; B01D29/012; B01D29/05; B01D29/07; B01D46/0001; B01D46/10; B01D2265/00; B01D2265/04; Y; Y10; Y10S; Y10S264/00; Y10S264/48; Y10S55/00; Y10S55/05; Y10S55/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A METHOD OF FORMING A FILTER ASSEMBLY OF A TYPE INCLUDING AN OPEN-END BORDER FRAME MEMBER HAVING A SHEET OF FILTER MEDIUM DISPOSED THERIN AND SUPPORTED THEREBY COMPRISING THE STEPS OF SUPPORTING A SHEET OF POROUS FILTER MEDIUM ON A SUPPORT JIG IN THE FORM IT IS TO HAVE FINAL ASSEMBLY WITH PERIPHERAL EDGE PORTIONS THEREOF EXTENDING INTO A PARTIALLY ASSEMBLED AND PARTIALLY CONFINED BORDER FRAME MOLD ADJACENT TO AND SURROUNDING SAID SUPPORT JIG, APPLYING A CONTROLLED QUANTITY OF EXPANSIBLE PLASTIC COMPOUND ALONG ONE SIDE OF SAID BORDER FRAME MOLD IN UNEXPANDED FROM, ASSEMBLING AND COMPLETELY CONFINING THE OVRALL BOUNDARIES OF SAID BORDER FRAME MOLD WITH SAID UNEXPANDED COMPOUND DISPOSED THEREIN, EXPANDING SAID PLASTIC COMPOUND TO THE LIMITS OF CONFINEMENT OF SAID MOLD SO THAT SAID POROUS EDGE PORTIONS OF SAID FILTER MEDIUM ARE EMBEDDED IN THE EXPANDED COMPOUND, AND ALLOWING SAID PLASTIC COMPOUND TO SET IN SUCH EMBEDDED RELATIONSHIP BEFORE RELEASING THE FINISHED FILTER ASSEMBLY.
Claim 2
Independent Claim
156 words
A METHOD OF FORMING A FILTER ASSEMBLY OF A TYPE INCLUDING AN OPEN-END BORDER FRAME MEMBER HAVING A SHEET OF FILTER MEDIUM DISPOSED THERIN AND SUPPORTED THEREBY COMPRISING THE STEPS OF SUPPORTING A SHEET OF POROUS FILTER MEDIUM ON A SUPPORT JIG IN THE FORM IT IS TO HAVE FINAL ASSEMBLY WITH PERIPHERAL EDGE PORTIONS THEREOF EXTENDING INTO A PARTIALLY ASSEMBLED AND PARTIALLY CONFINED BORDER FRAME MOLD ADJACENT TO AND SURROUNDING SAID SUPPORT JIG, APPLYING A CONTROLLED QUANTITY OF EXPANSIBLE PLASTIC COMPOUND ALONG ONE SIDE OF SAID BORDER FRAME MOLD IN UNEXPANDED FROM, ASSEMBLING AND COMPLETELY CONFINING THE OVRALL BOUNDARIES OF SAID BORDER FRAME MOLD WITH SAID UNEXPANDED COMPOUND DISPOSED THEREIN, EXPANDING SAID PLASTIC COMPOUND TO THE LIMITS OF CONFINEMENT OF SAID MOLD SO THAT SAID POROUS EDGE PORTIONS OF SAID FILTER MEDIUM ARE EMBEDDED IN THE EXPANDED COMPOUND, AND ALLOWING SAID PLASTIC COMPOUND TO SET IN SUCH EMBEDDED RELATIONSHIP BEFORE RELEASING THE FINISHED FILTER ASSEMBLY.
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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) | 1968-05-10 | 1968-11-09 | 1969-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-10 | 1972-11-09 | 1973-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-10 | 1976-11-09 | 1977-05-11 | $7700.00 | Window Closed / Lapsed |