US3332556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter apparatus
Assignee: Individual
•
Filing: 1964-04-21
•
Granted: 1967-07-25
•
Expires: 1984-04-21
Abstract
No abstract record available.
Inventors
- 👤 Hirs Gene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:37
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/01; B01D29/03; B01D29/44; B01D29/445; B01D29/62; B01D29/64; B01D29/6469; B01D29/6484
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
IN A FILTER APPARATUS FOR REMOVING CONTAMINANT PARTICLES FROM A CONTAMINATED LIQUID, A TANK STRUCTURE SUBDIVIDED BY COMMON STATIONARY WALL MEANS INTO AN UPPER COMPARTMENT ADAPTED TO MAINTAIN A SUBSTANTIALLY CONSTANT BODY OF CONTAMINATED LIQUID AND A LOWER COMPARTMENT ADAPTED TO BE FILLED WITH FILTRATE, SAID WALL HAVING AN OPENING THEREIN INTERCONNECTING SAID COMPARTMENTS, A PERFORATE FIXED PRIMARY FILTER MEDIUM AT SAID OPENING AND INTERPOSED BETWEEN SAID COMPARTMENTS TO REMOVE SAID PARTICLES FROM LIQUID FLOWING THROUGH SAID OPENING, SUCH PARTICLES ACCRETING ON THE UPPER SURFACE OF SAID MEDIUM, AN ENDLESS CONVEYOR IN THE FORM OF A CLOSED LOOP HAVING A LOWER REACH DEPENDING INTO SAID UPPER COMPARTMENT, SAID CONVEYOR HAVING FIRST TRANSVERSE FLIGHTS SPACED FROM THE UPPER SURFACE OF SAID FIXED FILTER MEDIUM AND CONTACTING CONTAMINANT PARTICLES ACCRETED THEREON, POWER MEANS FOR ADVANCING SAID CONVEYOR CONTINUOUSLY
Claim 2
Dependent Claim
136 words
IN A FILTER APPARATUS FOR REMOVING CONTAMINANT PARTICLES FROM A CONTAMINATED LIQUID, A TANK STRUCTURE SUBDIVIDED BY COMMON STATIONARY WALL MEANS INTO AN UPPER COMPARTMENT ADAPTED TO MAINTAIN A SUBSTANTIALLY CONSTANT BODY OF CONTAMINATED LIQUID AND A LOWER COMPARTMENT ADAPTED TO BE FILLED WITH FILTRATE, SAID WALL HAVING AN OPENING THEREIN INTERCONNECTING SAID COMPARTMENTS, A PERFORATE FIXED PRIMARY FILTER MEDIUM AT SAID OPENING AND INTERPOSED BETWEEN SAID COMPARTMENTS TO REMOVE SAID PARTICLES FROM LIQUID FLOWING THROUGH SAID OPENING, SUCH PARTICLES ACCRETING ON THE UPPER SURFACE OF SAID MEDIUM, AN ENDLESS CONVEYOR IN THE FORM OF A CLOSED LOOP HAVING A LOWER REACH DEPENDING INTO SAID UPPER COMPARTMENT, SAID CONVEYOR HAVING FIRST TRANSVERSE FLIGHTS SPACED FROM THE UPPER SURFACE OF SAID FIXED FILTER MEDIUM AND CONTACTING CONTAMINANT PARTICLES ACCRETED THEREON, POWER MEANS FOR ADVANCING SAID CONVEYOR CONTINUOUSLY
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |