Patent US4407663A successfully refreshed from Google Patents.
US4407663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modular spin filters and housing therefor
Assignee: Dollinger Corp
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Filing: 1982-06-30
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Granted: 1983-10-04
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Expires: 2002-06-30
Abstract
Abstract This filter module comprises a rectangularly shaped housing made from four separate parts--namely, a pair of rectangularly shaped front and rear sections, respectively, and a pair of rectangular end panels or caps releasably fastened to opposite ends of the front and rear sections to hold them in registry with each other. The two end panels have dovetail-shaped tongue and groove connections with confronting surfaces on the front and rear sections of the module, so that the end panels can be shifted in one direction to secure the front and rear sections together, and in another direction to disassemble the front and rear sections. A plurality of gas discharge tubes project from the rear section coaxially into a plurality of filter tubes, which project rearwardly from gas inlet openings in the front section of the module. Conventionally shaped spinner elements are fixed in the forward ends of the filter tubes to cause incoming gas to be swirled coaxially in the filter tubes, whereby dust and moisture in the swirling gases are urged radially outwardly and through annular spaces between each pair of cooperating tubes to a bleeder duct, which connects a dust bin, or the like to one end of the module. The remaining, clean portions of the gases pass directly from the filter tubes into the registering ends of the discharge tubes for discharge out of the back of the module.
Inventors
- 👤 Clyde W. Hawley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:50
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/12
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
160 words
A spin filter module, comprising a pair of front and rear sections, respectively, releasably engaged with each other to form a rectangular enclosure open at opposite ends thereof, spaced tubular means extending transversely through said enclosure to convey gas from openings in said front section to discharge openings in said rear section and including means for causing particles in said gas to be centrifugally separated from the gas and discharged into said enclosure, a pair of rectangular end panels, and means releasably connecting said end panels to opposite ends of said sections at said opposite ends, respectively, of said rectangular enclosure, whereby said front and rear sections are releasably secured together by said end panels, one of said panels being solid thereby to seal said enclosure at one end thereof, and the other of said panels having therethrough an opening for connecting the interior of said enclosure with a bleeder duct for conveying away the particles discharged into said enclosure.
Claim 2
Dependent Claim
160 words
A spin filter module, comprising a pair of front and rear sections, respectively, releasably engaged with each other to form a rectangular enclosure open at opposite ends thereof, spaced tubular means extending transversely through said enclosure to convey gas from openings in said front section to discharge openings in said rear section and including means for causing particles in said gas to be centrifugally separated from the gas and discharged into said enclosure, a pair of rectangular end panels, and means releasably connecting said end panels to opposite ends of said sections at said opposite ends, respectively, of said rectangular enclosure, whereby said front and rear sections are releasably secured together by said end panels, one of said panels being solid thereby to seal said enclosure at one end thereof, and the other of said panels having therethrough an opening for connecting the interior of said enclosure with a bleeder duct for conveying away the particles discharged into said enclosure.
Claim 3
Dependent Claim
37 words
A spin filter module as defined in claim 1, wherein said connecting means comprises projections on said panels slidably engaged in registering grooves in said front and rear sections releasably to secure said panels to said sections.
Claim 4
Dependent Claim
35 words
A spin filter module as defined in claim 1, wherein said connecting means comprises projections on said sections slidably engaged in registering grooves in said end panels releasably to secure said panels to said sections.
Claim 5
Dependent Claim
49 words
A spin filter module as defined in claim 1, wherein said connecting means comprises a plurality of dovetail-shaped projections formed on one of two confronting surfaces on said panels and sections, respectively, and slidably and releasably engaged in registering dovetail-shaped grooves formed in the other of said confronting surfaces.
Claim 6
Dependent Claim
87 words
A spin filter module as defined in claim 4, wherein four of said projections are located at each end of said enclosure, and each of said four projections is located adjacent one of the four corners of said enclosure, whereby said end panels are shiftable manually in planes parallel to their own planes, and in one direction relative to said front and rear sections to engage said projections in locking positions in said grooves, and in the opposite direction to remove the projections from said locking positions.
Claim 7
Dependent Claim
31 words
A spin filter module as defined in claim 5, wherein certain of said projections are on said front and rear sections, and others of the projections are on said end panels.
Claim 8
Dependent Claim
81 words
A spin filter as defined in claim 6, wherein each of said sections has a pair of said projections extending beyond one end thereof, and a pair of said grooves in the opposite end thereof, and in spaced registry with said pair of projections thereon, and each section is releasably attachable at said one end thereof to said other end of another, similar section, whereby a plurality of like sections can be releasably attached to each other between said end panels.
Claim 9
Dependent Claim
139 words
A modular spin filter comprising a pair of front and rear sections positioned in operative engagement with each other, a pair of end panels releasably secured to opposite ends of said front and rear sections to secure said sections releasably in their operative positions, and means for conveying a gas, which is to be filtered, from gas inlet openings in one of said sections to gas discharge openings in the other of said sections, including means for centrifugally removing particles from the gas as it passes between said sections, each of said end panels being releasably connected to said sections by tongue and groove connecting means permitting each panel to be manually shifted relative to said sections in one direction to connect the panel to said sections and in the opposite direction to disconnect the panel from said sections.
Claim 10
Dependent Claim
139 words
A modular spin filter comprising a pair of front and rear sections positioned in operative engagement with each other, a pair of end panels releasably secured to opposite ends of said front and rear sections to secure said sections releasably in their operative positions, and means for conveying a gas, which is to be filtered, from gas inlet openings in one of said sections to gas discharge openings in the other of said sections, including means for centrifugally removing particles from the gas as it passes between said sections, each of said end panels being releasably connected to said sections by tongue and groove connecting means permitting each panel to be manually shifted relative to said sections in one direction to connect the panel to said sections and in the opposite direction to disconnect the panel from said sections.
Claim 11
Dependent Claim
98 words
A modular spin filter as defined in claim 8, wherein said tongue and groove connecting means comprises a plurality of projections on one of said opposite ends of each of said sections, and a like plurality of grooves in the other opposite end of each section in registry with, and similar in configuration to, said projections, said projections on said one opposite end of a section being releasably insertable into the grooves on said other opposite end of another of said sections whereby a plurality of like sections can be connected end to end by said connecting means.
Claim 12
Dependent Claim
20 words
A modular spin filter as defined in claim 9, wherein said projections are dovetail-shaped and extend parallel to each other.
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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) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |