US3218784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hammock filter
Assignee: Lennox Industries Inc
•
Filing: 1963-04-01
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Granted: 1965-11-23
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Expires: 1983-04-01
Abstract
No abstract record available.
Inventors
- 👤 John R Greiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:01
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
FOR USE IN AN AIR PROCESSING UNIT HAVING A HOUSING AND A BLOWER MOUNTED THEREIN, A GENERALLY ARCUATE-SHAPED FILTER ASSEMBLY ADAPTED TO BE MOUNTED IN THE STREAM OF AIR PASSING THROUGH THE HOUSING, SAID FILTER ASSEMBLY COMPRISING A WIRE MESH SUPPORTING RACK, FILTER MATERIAL SUBSTANTIALLY COEXTENSIVE WITH SAID WIRE MESH SUPPORTING RACK AND ADAPTED TO BE SECURED THERETO, A PAIR OF FLANGE MEMBER PIVOTALLY SECURED TO THE NON-ARCUATE ENDS OF SAID WIRE MESH SUPPORTING RACK FOR ENGAGING THE ENDS OF SAID FILTER MATERIAL, AND HOOK MEANS PIVOTALLY SECURED AT ONE END TO EACH OF SAID FLANGE MEMBERS AND HAVING A FREE END FOR ENGAGING AND POSITIVELY RETAINING SAID FILTER MATERIAL IN PLACE ON SAID WIRE MESH SUPPORTING RACK, THE PIVOTAL CONNECTION OF SAID HOOK MEANS TO SAID FLANGE MEMBERS BEING SPACED FROM THE PIVOTAL CONNECTION OF SAID FLANGE
Claim 2
Dependent Claim
138 words
FOR USE IN AN AIR PROCESSING UNIT HAVING A HOUSING AND A BLOWER MOUNTED THEREIN, A GENERALLY ARCUATE-SHAPED FILTER ASSEMBLY ADAPTED TO BE MOUNTED IN THE STREAM OF AIR PASSING THROUGH THE HOUSING, SAID FILTER ASSEMBLY COMPRISING A WIRE MESH SUPPORTING RACK, FILTER MATERIAL SUBSTANTIALLY COEXTENSIVE WITH SAID WIRE MESH SUPPORTING RACK AND ADAPTED TO BE SECURED THERETO, A PAIR OF FLANGE MEMBER PIVOTALLY SECURED TO THE NON-ARCUATE ENDS OF SAID WIRE MESH SUPPORTING RACK FOR ENGAGING THE ENDS OF SAID FILTER MATERIAL, AND HOOK MEANS PIVOTALLY SECURED AT ONE END TO EACH OF SAID FLANGE MEMBERS AND HAVING A FREE END FOR ENGAGING AND POSITIVELY RETAINING SAID FILTER MATERIAL IN PLACE ON SAID WIRE MESH SUPPORTING RACK, THE PIVOTAL CONNECTION OF SAID HOOK MEANS TO SAID FLANGE MEMBERS BEING SPACED FROM THE PIVOTAL CONNECTION OF SAID FLANGE
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |