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| Anti-infection and toxin elimination device |
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| Thermoformable laminate structure |
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| Process for the manufacture of a composite molded structure, and especially of a ski |
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| Method of making a headliner and the like |
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| Method for forming plastic molded panels with inserts |
| FIG. 1 schematically illustrates an example of an interior door panel 10 for an automobile. The ... |
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| Self-supporting impact resistant laminate |
| The preferred embodiments of the laminate of this invention will now be described in relation to an ... |
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| Laminated headliner |
| We claim: 1. A headliner formed from laminated layers of foamed resin, fiber glass, non-woven scrim ... |
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| Twin-sheet thermoforming process with shell reinforcement |
| We claim: 1. A process for producing a reinforced twin-sheet thermoformed thermoplastic article ... |
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| Headliner assembly and locating method |
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Fiber-rejecting corona discharge electrode and a filtering system employing the discharge electrode
| Details |
Inventors: Teague, Richard K.; Yu, Henry H. S.;
Assignee: Envirotech Corporation (Menlo Park, CA)
Primary Examiner: Lacey; David L.
Assistant Examiner:
Attorney, Agent or Firm: Krebs; Robert E., McNaughton; Thomas J.
In a system for filtering fibers and particulates from a gas stream, a fiber separator (10) is disposed to remove fibers in gross quantity from the gas stream. A corona charging apparatus (20) is disposed downstream of the fiber separator (10) to impart electric charge to particulates and to fibers that escape removal from the gas stream by the fiber separator (10). An electrostatic filter medium (30), which may advantageously be mounted on the cylindrical wall of a drum filter, is disposed downstream of the corona charging apparatus (20) to remove electrically charged particulates and fibers from the gas stream. The corona charging apparatus (20) comprises at least one fiber-rejecting corona discharge electrode (21 or 25). The fiber-rejecting electrode (21) comprises a shielding portion (22) facing upstream and a corona discharge portion (23) facing downstream in the gas stream. The radius of curvature of the shielding portion (22) is greater than the radius of curvature of the corona discharge portion (23) in a plane parallel to the gas stream so that the corona discharge occurs in a region that is shielded from fibers carried by the gas stream. |
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DETAILED DESCRIPTION What is claimed is: 1.
A fiber-rejecting corona discharge electrode for imparting electric charge to particulates in a gas stream, comprising: an arcurate shielding member for positioning within the path of a gas stream to confront the direction of flow of gases along said path; a corona discharge member having a radius of curvature about a terminal end, the corona discharge member being connected to the shielding member and projecting radially outwardly from the elongate axis of the shielding member such that when placed in said path the corona discharge member is downstream from the shielding member, the radius of curvature of the shielding member being larger than the radius of curvature of the corona discharge member in a plane perpendicular to the direction of elongation of the electrode, and the cross-sectional perimeter around the connected shielding member and corona discharge member being greater than 1.
25 inches.
2.
The fiber-rejecting corona discharge electrode of claim 1, wherein: the shielding member is of circular cross-section; and the cross-sectional perimeter around the connected shielding member and corona discharge member is greater than the circumference of the shielding member by more than twice the width of the corona discharge member.
3.
The fiber-rejecting corona discharge electrode of of claim 2, wherein: the corona discharge member is in the form of a vane.
4.
The fiber-rejecting corona discharge electrode of claim 2, wherein: the corona discharge member comprises a needle-like projection.
5.
The fiber-rejecting corona discharge electrode of claim 2, wherein: the corona discharge member comprises a plurality of needle-like projections spaced linearly apart from each other along the shielding portion.
6.
The fiber-rejecting corona discharge electrode of claim 1, wherein: the ratio of curvature of the shielding member to the radius of curvature of the corona discharge member is approximately 2000.
7.
The fiber-rejecting corona discharge electrode of claim 6, wherein: the shielding member is of circular cross-section; and the cross-sectional perimeter around the connected shielding member and corona discharge member is greater than the circumference of the shielding member by more than twice the width of the corona discharge member
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