Patent US4385988A successfully refreshed from Google Patents.
US4385988A
Expired / Lapsed
US
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Packing element for a biological filter or for use in mass transfer
Assignee: Individual
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Filing: 1982-02-18
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Granted: 1983-05-31
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Expires: 2002-02-18
Abstract
Abstract A packing element for a biological filter or for use in mass transfer has a plurality of trickling faces along which the liquid or gas to be treated flows. The faces are disposed on at least one rim of the element at an angle between 3° and 40° relative to the vertical axis of the element, and have relatively large surface areas. The apex angle of the element is about 140° to about 180°, the height of the element being greatest at its center portion. Rounded projecting portions cause randomly introduced elements to become oriented automatically so that the vertical axis is aligned with the liquid or gas flow and the element in a horizontal position. Additionally, a ductlike member is provided at the upper edge on at least one of the at least one rims, to more effectively distribute the liquid or gas flow on the trickling faces.
Inventors
- 👤 Alpo Hypponen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:46
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/30; C; C02; C02F; C02F3/00; C02F3/02; C02F3/10; B01J2219/00; B01J2219/30; B01J2219/302; B01J2219/30215; B01J2219/30246; Y; Y02; Y02W; Y02W10/00; Y02W10/10; Y10; Y10S; Y10S261/00; Y10S261/72
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
169 words
A packing element for a biological filter or for use in mass transfer, said packing element having a center portion and a vertical axis associated therewith, said center portion additionally having an apex angle associated therewith, and said element additionally having a height and an outer dimension associated therewith, wherein said packing element comprises a multiplicity of trickling faces, and wherein the liquid or gas to be treated is arranged to flow along said trickling faces of said packing element in contact with another medium, said trickling faces having relatively large wettable surface areas and being angled at about 3° to about 40° with respect to said vertical axis of the element, characterized in that said height of said packing element is about 20% to about 60% of said outer dimension of said element, the maximum value of said height being at the center portion of the element, and further characterized in that the outer periphery of said element is provided with rounded portions projecting outwardly beyond said periphery.
Claim 2
Dependent Claim
169 words
A packing element for a biological filter or for use in mass transfer, said packing element having a center portion and a vertical axis associated therewith, said center portion additionally having an apex angle associated therewith, and said element additionally having a height and an outer dimension associated therewith, wherein said packing element comprises a multiplicity of trickling faces, and wherein the liquid or gas to be treated is arranged to flow along said trickling faces of said packing element in contact with another medium, said trickling faces having relatively large wettable surface areas and being angled at about 3° to about 40° with respect to said vertical axis of the element, characterized in that said height of said packing element is about 20% to about 60% of said outer dimension of said element, the maximum value of said height being at the center portion of the element, and further characterized in that the outer periphery of said element is provided with rounded portions projecting outwardly beyond said periphery.
Claim 3
Dependent Claim
24 words
A packing element according to claim 1, further characterized in that said apex angle of said element is between about 140° and about 180°.
Claim 4
Dependent Claim
28 words
A packing element according to claim 1, further characterized in that said trickling faces are angled at about 5° to about 15° with respect to said vertical axis.
Claim 5
Dependent Claim
187 words
A packing element for a biological filter or for use in mass transfer, said packing element having a center portion and a vertical axis associated therewith, said center portion additionally having an apex angle associated therewith, and said element additionally having a height and an outer dimension associated therewith, wherein said packing element comprises at least one rim upon which at least one of a multiplicity of trickling faces is disposed, and wherein the liquid or gas to be treated is arranged to flow along said trickling faces in contact with another medium, said trickling faces having relatively large wettable surface areas and being angled at about 3° to about 40° with respect to said vertical axis, characterized in that said height of said packing element is about 20% to about 60% of said outer dimension of said element, the maximum value of said height being at said center portion of said element, and further characterized in that at least one of said at least one rim has a ductlike member provided at the top edge thereof forming a duct along the outer periphery of said rim.
Claim 6
Dependent Claim
187 words
A packing element for a biological filter or for use in mass transfer, said packing element having a center portion and a vertical axis associated therewith, said center portion additionally having an apex angle associated therewith, and said element additionally having a height and an outer dimension associated therewith, wherein said packing element comprises at least one rim upon which at least one of a multiplicity of trickling faces is disposed, and wherein the liquid or gas to be treated is arranged to flow along said trickling faces in contact with another medium, said trickling faces having relatively large wettable surface areas and being angled at about 3° to about 40° with respect to said vertical axis, characterized in that said height of said packing element is about 20% to about 60% of said outer dimension of said element, the maximum value of said height being at said center portion of said element, and further characterized in that at least one of said at least one rim has a ductlike member provided at the top edge thereof forming a duct along the outer periphery of said rim.
Claim 7
Dependent Claim
28 words
A packing element according to claim 4, further characterized in that said trickling faces are angled at about 5° to about 15° with respect to said vertical axis.
Claim 8
Dependent Claim
24 words
A packing element according to claim 4, further characterized in that said apex angle of said element is between about 140° and about 180°.
Claim 9
Dependent Claim
23 words
A packing element according to claim 4, further characterized in that the outer periphery of said element is provided with rounded projecting portions.
Claim 10
Dependent Claim
24 words
A packing element according to claim 7, further characterized in that said apex angle of said element is between about 140° and about 180°.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-30 | 1986-11-29 | 1987-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-30 | 1990-11-29 | 1991-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-30 | 1994-11-29 | 1995-05-31 | $7700.00 | Window Closed / Lapsed |