Patent US5185018A successfully refreshed from Google Patents.
US5185018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural fibrosics
Assignee: UNIVERSAL POROSICS Inc A CORP OF DELAWARE
•
Filing: 1991-11-04
•
Granted: 1993-02-09
•
Expires: 2011-11-04
Abstract
Abstract A strong and light weight tubular structural member is formed of a fibrous ceramic mat-like skeletal base filled with a ceramic binder. The ceramic filled base is coated in a chemical deposition process with a thin ceramic skin which is molecularly bonded to the base and which greatly strengthens the member and increases its useful life when it is used in contact with high temperature furnace gasses. The use of such tubular members in cross-flow filter elements to separate planar ceramic filter elements and the use thereof to strengthen ceramic tube sheets in pressure type tube filters is disclosed.
Inventors
- 👤 Elizabeth S. Zievers
- 👤 James F. Zievers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:19
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; B01D39/20; B01D39/2068; B01D39/2082; B01D39/2086; B01D46/00; B01D46/02; B01D46/10; B01D46/12; B01D2239/00; B01D2239/04; B01D2239/0471; B01D2239/0478; B01D2239/06; B01D2239/065; B01D2239/0654; B01D2239/069; B01D2239/10; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/936
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
189 words
A filter element for removing entrained particulates from a high temperature gas, comprising in combination a plurality of thin porous members formed of ceramic fibers bonded together into an integral member, a first plurality of tubular structural members disposed against one side of one of said thin porous members and bonded thereto, said tubular structural members being rectilinear and extending in mutually parallel relationship, a second plurality of tubular structural members disposed against the other side of said one of said thin porous members and bonded thereto, said second plurality of tubular members being in mutual parallel relationship and extending orthogonally with respect to said first plurality of tubular structural members, said tubular structural members being formed by vacuum forming a skeletal base of randomly oriented ceramic fibers and a liquid ceramic binder, heat drying said base to bond said fibers together, then immersing said base in a liquid ceramic bath, removing said base from said bath, then heat treating said base to provide a substantially rigid member, and then depositing on an external surface of said rigid member a coating of ceramic material in a chemical deposition process.
Claim 2
Dependent Claim
189 words
A filter element for removing entrained particulates from a high temperature gas, comprising in combination a plurality of thin porous members formed of ceramic fibers bonded together into an integral member, a first plurality of tubular structural members disposed against one side of one of said thin porous members and bonded thereto, said tubular structural members being rectilinear and extending in mutually parallel relationship, a second plurality of tubular structural members disposed against the other side of said one of said thin porous members and bonded thereto, said second plurality of tubular members being in mutual parallel relationship and extending orthogonally with respect to said first plurality of tubular structural members, said tubular structural members being formed by vacuum forming a skeletal base of randomly oriented ceramic fibers and a liquid ceramic binder, heat drying said base to bond said fibers together, then immersing said base in a liquid ceramic bath, removing said base from said bath, then heat treating said base to provide a substantially rigid member, and then depositing on an external surface of said rigid member a coating of ceramic material in a chemical deposition process.
Claim 3
Dependent Claim
163 words
A tube sheet for use in a pressure filter having a plurality of tubular filter elements through the walls in which a hot gas is adapted to flow in order to remove particulates entrained in said gas, comprising in combination a rigid planar member formed of ceramic fibers bonded together and filled with a ceramic material, said planar member having a plurality of holes extending therethrough for receiving said filter elements, a plurality of tubular structural members bonded to one side of said planar member, said tubular structural members being formed by vacuum forming a skeletal base of randomly oriented ceramic fibers and a liquid ceramic binder, heat drying said base to bond said fibers together, then immersing said base in a liquid ceramic bath, removing said base from said bath, then heat treating said base to provide a substantially rigid member, and then depositing on an external surface of said rigid member a coating of ceramic material in a chemical deposition process.
Claim 4
Dependent Claim
163 words
A tube sheet for use in a pressure filter having a plurality of tubular filter elements through the walls in which a hot gas is adapted to flow in order to remove particulates entrained in said gas, comprising in combination a rigid planar member formed of ceramic fibers bonded together and filled with a ceramic material, said planar member having a plurality of holes extending therethrough for receiving said filter elements, a plurality of tubular structural members bonded to one side of said planar member, said tubular structural members being formed by vacuum forming a skeletal base of randomly oriented ceramic fibers and a liquid ceramic binder, heat drying said base to bond said fibers together, then immersing said base in a liquid ceramic bath, removing said base from said bath, then heat treating said base to provide a substantially rigid member, and then depositing on an external surface of said rigid member a coating of ceramic material in a chemical deposition process.
References Cited (Backward Citations)
US2667233A
Cited
US4174331A
Cited
GB1476481A
Cited
US3982100A
Cited
US3995143A
Cited
US4619866A
Cited
US4343631A
Cited
US4500602A
Cited
US4488920A
Cited
US4568594A
Cited
US4642271A
Cited
US4761323A
Cited
US4857489A
Cited
US5071457A
Cited
US4692176A
Cited
US4737176A
Cited
US4735638A
Cited
US4824711A
Cited
US4965101A
Cited
US5075160A
Cited
US4960449A
Cited
US4968467A
Cited
US5076054A
Cited
US4960448A
Cited
US5082480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-02-09 | 1996-08-10 | 1997-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-09 | 2000-08-10 | 2001-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-09 | 2004-08-10 | 2005-02-09 | $7700.00 | Window Closed / Lapsed |