US3557959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter for viscous fluids
Assignee: Individual
•
Filing: 1969-01-23
•
Granted: 1971-01-26
•
Expires: 1989-01-23
Abstract
Abstract Filtering or separating equipment, particularly that type in which a filter device consists of stacks of grooved strips through which the fluid is passed, the device having heating means to react against the fluid and having self-contained cleaning means which automatically and rapidly effect cleaning of the filter elements used in the equipment one at a time, while the filtering occurs, said cleaning means being automatically driven.
Inventors
- 👤 Jacques Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:34
CPC Classifications
C; C10; C10G; C10G31/00; C10G31/09; B; B01; B01D; B01D29/00; B01D29/11; B01D29/114; B01D29/44; B01D29/46; B01D29/50; B01D29/52; B01D29/54; B01D29/62; B01D29/66; B01D29/668; B01D29/76; B01D29/80; B01D29/84; B01D29/846; B01D35/00; B01D35/18; B01D36/00; B01D36/003
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
55 words
The combination set forth in claim 1 in which each of said discharge arms is slidably mounted on said hollow shaft and resilient means are provided to urge said arms radially outward to provide a seal between the mouth of each of said arms and the inner surface of each of said cylindrical supporting members.
Claim 2
Dependent Claim
49 words
The combination set forth in claim 1 in which a ratchet wheel is secured to the lower end of said rotary hollow shaft, a ratchet arm engages said ratchet wheel and means are provided for intermittently actuating said ratchet arm to effect step by step rotation of said shaft.
Claim 3
Dependent Claim
44 words
The combination set forth in claim 1 in which an annular cavity is provided in said lowermost chamber in communication with the intermediate chamber whereby water collected in said intermediate chamber will flow into said annular cavity, said annular cavity having a discharge outlet.
References Cited (Backward Citations)
US2544289A
Cited
US2767851A
Cited
US3074561A
Cited
US3176846A
Cited
US3289839A
Cited
US3445002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |