USRE35433E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coalescer filter and method
Assignee: Alexander Machinery Inc
•
Filing: 1993-03-25
•
Granted: 1997-01-28
•
Expires: 2013-03-25
Abstract
Abstract A coalescer filter is illustrated for removing material from a gas wherein a collection of liquid coalesced by passing a gaseous stream upwardly within a coalescing material packed in an upright cylindrical housing is facilitated by creating a pressure drop in a tube .[.by venturi action.]. .Iadd.in an inlet air stream .Iaddend.and communicating the pressure drop to a canister. The use of a float valve is also illustrated for controlling the discharge of liquid collected in a sealed drainage canister receiving coalesced liquid from a lower portion of an upright column or housing containing coalescing material through which a gaseous stream is passed upwardly.
Inventors
- 👤 William J. Alexander, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:18
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/42; B01D46/0027; B01D46/003; B01D46/0031; B01D46/56; B01D46/62; B01D53/00; B01D53/26; B01D53/266
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
125 words
A coalescer filter for removing a liquid from a gas comprising: an upright housing; coalescing material packed in said housing an inlet .Iadd.conduit .Iaddend.for gas through which an unfiltered gaseous stream enters a lower portion of said upright housing and is directed upwardly into said coalescing material; a drainage opening positioned laterally of said inlet .Iadd.conduit .Iaddend.receiving liquid coalesced in said housing; a canister below said inlet .Iadd.conduit .Iaddend.for collecting said liquid from said drainage opening; and a tube extending upwardly from said canister into said gaseous stream .Iadd.in said inlet conduit .Iaddend.creating a pressure .[.drop in said tube.]. .Iadd.differential between said drainage opening and said canister;.Iaddend. whereby a negative pressure gradient is created in said canister facilitating a flow of liquid into said canister.
Claim 2
Dependent Claim
125 words
A coalescer filter for removing a liquid from a gas comprising: an upright housing; coalescing material packed in said housing an inlet .Iadd.conduit .Iaddend.for gas through which an unfiltered gaseous stream enters a lower portion of said upright housing and is directed upwardly into said coalescing material; a drainage opening positioned laterally of said inlet .Iadd.conduit .Iaddend.receiving liquid coalesced in said housing; a canister below said inlet .Iadd.conduit .Iaddend.for collecting said liquid from said drainage opening; and a tube extending upwardly from said canister into said gaseous stream .Iadd.in said inlet conduit .Iaddend.creating a pressure .[.drop in said tube.]. .Iadd.differential between said drainage opening and said canister;.Iaddend. whereby a negative pressure gradient is created in said canister facilitating a flow of liquid into said canister.
Claim 3
Dependent Claim
19 words
The structure set forth in claim 1 including a drain in said canister for controlling discharge of liquid therefrom.
Claim 4
Dependent Claim
14 words
The structure set forth in claim 2 wherein said drain includes a float valve.
Claim 5
Dependent Claim
124 words
A coalescer air filter comprising an upright cylindrical housing containing coalescing: material; an air inlet .Iadd.conduit .Iaddend.through which an unfiltered air stream enters a central lower portion of said upright housing and is directed upwardly into said coalescing material; a drainage opening positioned laterally of said air inlet .Iadd.conduit .Iaddend.receiving liquid coalesced in said housing; a canister below said air inlet .Iadd.conduit .Iaddend.for collecting said liquid from said drainage opening; and an air tube extending upwardly from said canister into said air stream .Iadd.in said inlet conduit;.Iaddend. whereby a pressure .[.drop in said air tube.]. .Iadd.differential between said drainage opening and said canister .Iaddend.caused by said air .[.flow.]. .Iadd.stream .Iaddend.facilitates a flow of liquid into said canister by reducing air pressure in said canister.
Claim 6
Dependent Claim
124 words
A coalescer air filter comprising an upright cylindrical housing containing coalescing: material; an air inlet .Iadd.conduit .Iaddend.through which an unfiltered air stream enters a central lower portion of said upright housing and is directed upwardly into said coalescing material; a drainage opening positioned laterally of said air inlet .Iadd.conduit .Iaddend.receiving liquid coalesced in said housing; a canister below said air inlet .Iadd.conduit .Iaddend.for collecting said liquid from said drainage opening; and an air tube extending upwardly from said canister into said air stream .Iadd.in said inlet conduit;.Iaddend. whereby a pressure .[.drop in said air tube.]. .Iadd.differential between said drainage opening and said canister .Iaddend.caused by said air .[.flow.]. .Iadd.stream .Iaddend.facilitates a flow of liquid into said canister by reducing air pressure in said canister.
Claim 7
Dependent Claim
131 words
A coalescer air filter comprising: an upright cylindrical housing containing coalescing material packed therein; an air inlet .Iadd.conduit .Iaddend.through which an unfiltered air stream enters a lower portion of said upright housing and is directed upwardly into said coalescing material; a drainage opening positioned laterally of said air inlet .Iadd.conduit .Iaddend.receiving liquid coalesced in said housing; a canister for collecting said liquid from said drainage opening; a tube extending from said canister into said air stream .Iadd.in said inlet conduit; .Iaddend.and a float valve in said canister controlling the discharge of liquid collected in said canister; whereby a pressure .[.drop in said tube.]. .Iadd.differential between said drainage opening and said canister .Iaddend.caused by said air stream facilitates a flow of liquid into said canister by reducing air pressure in said canister.
Claim 8
Dependent Claim
131 words
A coalescer air filter comprising: an upright cylindrical housing containing coalescing material packed therein; an air inlet .Iadd.conduit .Iaddend.through which an unfiltered air stream enters a lower portion of said upright housing and is directed upwardly into said coalescing material; a drainage opening positioned laterally of said air inlet .Iadd.conduit .Iaddend.receiving liquid coalesced in said housing; a canister for collecting said liquid from said drainage opening; a tube extending from said canister into said air stream .Iadd.in said inlet conduit; .Iaddend.and a float valve in said canister controlling the discharge of liquid collected in said canister; whereby a pressure .[.drop in said tube.]. .Iadd.differential between said drainage opening and said canister .Iaddend.caused by said air stream facilitates a flow of liquid into said canister by reducing air pressure in said canister.
Claim 9
Dependent Claim
44 words
The structure set forth in claim 5 including an upright housing containing a filter carried in side by side relation with said first mentioned upright housing receiving air from an upper portion of said first mentioned housing for downward movement through said filter. .[.
Claim 10
Independent Claim
99 words
The method of removing liquids from an air stream comprising the steps of: providing an upright cylindrical housing containing coalescing material: forming an air stream in said cylindrical housing upwardly through said coalescing material; causing said liquids contained within said air stream to coalesce and flow downwardly by gravity in a direction opposite to the upward flow of said gaseous stream; and causing a pressure drop in a canister receiving coalesced liquids by positioning a tube having one end in said canister and the other end in said air stream to create a pressure drop in said canister.].. .[.
Claim 11
Independent Claim
99 words
The method of removing liquids from an air stream comprising the steps of: providing an upright cylindrical housing containing coalescing material: forming an air stream in said cylindrical housing upwardly through said coalescing material; causing said liquids contained within said air stream to coalesce and flow downwardly by gravity in a direction opposite to the upward flow of said gaseous stream; and causing a pressure drop in a canister receiving coalesced liquids by positioning a tube having one end in said canister and the other end in said air stream to create a pressure drop in said canister.].. .[.
Claim 12
Independent Claim
85 words
The method of removing liquids from air comprising the steps of: forming an air stream; providing an upright cylindrical housing containing coalescing material; introducing air to said cylindrical housing through said coalecing material; causing liquids contained within said air to coalesce and flow downwardly; and causing a pressure drop in a canister positioned below said housing receiving coalescend liquids by positioning a tube having one end in said canister and the other end in said air stream to create a pressure drop in said canister..].
Claim 13
Independent Claim
85 words
The method of removing liquids from air comprising the steps of: forming an air stream; providing an upright cylindrical housing containing coalescing material; introducing air to said cylindrical housing through said coalecing material; causing liquids contained within said air to coalesce and flow downwardly; and causing a pressure drop in a canister positioned below said housing receiving coalescend liquids by positioning a tube having one end in said canister and the other end in said air stream to create a pressure drop in said canister..].
Claim 14
Independent Claim
24 words
The method set forth in claim .[.8.]. .Iadd.11 .Iaddend.including the step of utilizing a float drain in said canister to drain coalesced liquid therefrom.
Claim 15
Independent Claim
31 words
The method set forth in claim .[.8.]. .Iadd.11 .Iaddend.including the step of positively expelling coalesced contaminants from said canister utilizing an automatic filter drain in a bottom of said canister. .Iadd.
Claim 16
Independent Claim
137 words
The method of removing liquids from air comprising the steps of: forming an inlet air stream; providing an upright cylindrical housing containing coalescing material; introducing said inlet air stream to said cylindrical housing through an inlet air conduit and thence upwardly through said coalescing material; causing liquids contained within said air to coalesce and flow downwardly; causing a pressure drop in a canister positioned below said housing receiving coalesced liquids by positioning a tube having one end in said canister and the other end in said inlet air stream in said conduit prior to passage through said coalescing material to create a pressure drop in said canister; draining said liquids from a lower portion of said housing through an opening spaced laterally of said inlet air conduit with the aid of said pressure drop in the canister..Iaddend.
Claim 17
Independent Claim
137 words
The method of removing liquids from air comprising the steps of: forming an inlet air stream; providing an upright cylindrical housing containing coalescing material; introducing said inlet air stream to said cylindrical housing through an inlet air conduit and thence upwardly through said coalescing material; causing liquids contained within said air to coalesce and flow downwardly; causing a pressure drop in a canister positioned below said housing receiving coalesced liquids by positioning a tube having one end in said canister and the other end in said inlet air stream in said conduit prior to passage through said coalescing material to create a pressure drop in said canister; draining said liquids from a lower portion of said housing through an opening spaced laterally of said inlet air conduit with the aid of said pressure drop in the canister..Iaddend.
References Cited (Backward Citations)
US32989A
Cited
US1115505A
Cited
US1458005A
Cited
US3130741A
Cited
US3705480A
Cited
US4131442A
Cited
US4487618A
Cited
US4572725A
Cited
US4600416A
Cited
USRE32989E
Cited
US4848989A
Cited
US4801313A
Cited
US4865815A
Cited
US4822387A
Cited
US4874408A
Cited
US5030262A
Cited
US4897094A
Cited
US4925466A
Cited
US5011519A
Cited
US5122167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-01-28 | 2000-07-29 | 2001-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-28 | 2004-07-29 | 2005-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-28 | 2008-07-29 | 2009-01-28 | $7700.00 | Window Closed / Lapsed |