Patent US3839185A successfully refreshed from Google Patents.
US3839185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtering wall filter
Assignee: Individual
•
Filing: 1973-05-07
•
Granted: 1974-10-01
•
Expires: 1993-05-07
Abstract
Abstract A filtering wall filter for liquid or gaseous fluids, of the type in which the fluid flow passage comprises a venturi, the said filter being provided with means for instantaneous closing of the fluid passage at the throat of the venturi to convert the high kinetic energy of the fluid at this point to a vibration energy capable of being transmitted to the filtering walls to unclog the said walls.
Inventors
- 👤 P Vicard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:54
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/02; B01D46/04; B01D29/00; B01D29/11; B01D29/117; B01D29/118; B01D29/62; B01D29/70; B01D29/72; B01D35/00; B01D35/06; B01D35/12; B01D35/20; B01D46/0027; B01D46/0032; B01D46/42; B01D46/4281; B01D46/66; B01D46/74; B01D46/76; Y; Y10; Y10S; Y10S55/00; Y10S55/38
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
210 words
A filtering wall filter for a fluid comprising a housing having an inlet and an outlet for fluid to be filtered; at least one filtering wall disposed within said housing between said inlet and said outlet in such a manner that fluid passing from said inlet through said housing to said outlet passes through at least one of said filtering walls; said outlet being a Venturi through which said fluid passes, said Venturi having an upstream converging conical portion, a neck and a downstream conical diverging portion, with the angle of conicity of said downstream diverging portion being much lower than the angle of conicity of said upstream converging portion, said Venturi further having a longitudinal axis; a movable plug having such a diameter as the substantially obturate said Venturi when disposed in the neck thereof; and means to displace said plug from a first position situated within one of said conical portions through said neck to a second position situated within the other one of said conical portions each of said first and second positions being situated at such a distance from neck that free passage of said fluid through said Venturi is not hindered by said plug when same is at any of said first and second positions.
Claim 2
Dependent Claim
210 words
A filtering wall filter for a fluid comprising a housing having an inlet and an outlet for fluid to be filtered; at least one filtering wall disposed within said housing between said inlet and said outlet in such a manner that fluid passing from said inlet through said housing to said outlet passes through at least one of said filtering walls; said outlet being a Venturi through which said fluid passes, said Venturi having an upstream converging conical portion, a neck and a downstream conical diverging portion, with the angle of conicity of said downstream diverging portion being much lower than the angle of conicity of said upstream converging portion, said Venturi further having a longitudinal axis; a movable plug having such a diameter as the substantially obturate said Venturi when disposed in the neck thereof; and means to displace said plug from a first position situated within one of said conical portions through said neck to a second position situated within the other one of said conical portions each of said first and second positions being situated at such a distance from neck that free passage of said fluid through said Venturi is not hindered by said plug when same is at any of said first and second positions.
Claim 3
Dependent Claim
54 words
In a filtering wall filter as claimed in claim 1, said means to displace said plug comprising a pneumatic ram disposed substantially along the axis of said Venturi within one of said conical portions at a distance from said neck, said ram including a movable rod with said plug being carried by said rod.
Claim 4
Dependent Claim
62 words
In a filtering wall filter as claimed in claim 2, said ram having an end through which said rod extends, said plug being aerodynamically conformed with respect to the gas flowing through said Venturi, and said end of said ram being formed with a recess to receive a portion of said plug at one of the ends of the stroke of same.
Claim 5
Dependent Claim
228 words
A filtering wall filter for a fluid containing particles in suspension, comprising a housing having an inLet and an outlet for fluid to be filtered; at least one filtering wall disposed within said housing between said inlet and said outlet in such a manner that fluid passing from said inlet through said housing to said outlet passes through at least one of said filtering walls; said outlet being a Venturi through which said fluid passes, said Venturi having an upstream converging conical portion, a neck and a downstream conical diverging portion, with the angle of conicity of said downstream diverging portion being much lower than the angle of conicity of said upstream converging portion; a movable plug having such a diameter as to substantially obturate said Venturi when disposed in the neck thereof; means to displace said plug from a first position situated within one of said conical portions through said neck to a second position situated within the other one of said conical portions, each of said first and second positions being situated at such a distance from said neck that free passage of said fluid through said Venturi is not hindered by said plug when same is at any of said first and second positions; and polarization and ionization electrodes to electrify the particles in suspension in said fluid in the vicinity of said filtering walls.
Claim 6
Dependent Claim
228 words
A filtering wall filter for a fluid containing particles in suspension, comprising a housing having an inLet and an outlet for fluid to be filtered; at least one filtering wall disposed within said housing between said inlet and said outlet in such a manner that fluid passing from said inlet through said housing to said outlet passes through at least one of said filtering walls; said outlet being a Venturi through which said fluid passes, said Venturi having an upstream converging conical portion, a neck and a downstream conical diverging portion, with the angle of conicity of said downstream diverging portion being much lower than the angle of conicity of said upstream converging portion; a movable plug having such a diameter as to substantially obturate said Venturi when disposed in the neck thereof; means to displace said plug from a first position situated within one of said conical portions through said neck to a second position situated within the other one of said conical portions, each of said first and second positions being situated at such a distance from said neck that free passage of said fluid through said Venturi is not hindered by said plug when same is at any of said first and second positions; and polarization and ionization electrodes to electrify the particles in suspension in said fluid in the vicinity of said filtering walls.
References Cited (Backward Citations)
US2732912A
Cited
US1398685A
Cited
US1931436A
Cited
DE903890C
Cited
US3158455A
Cited
US3182977A
Cited
US3169038A
Cited
US3368328A
Cited
US3373545A
Cited
US3431709A
Cited
US3577705A
Cited
US3726065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |