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US4750996A Expired / Lapsed US ⏱️ 0.0 years remaining

Gated drawer filter

Assignee: Bunting Magnetics Co
•
Filing: 1986-05-02
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Granted: 1988-06-14
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Expires: 2006-05-02
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Abstract

Abstract A drawer filter having a housing which includes a top flange with an opening and a bottom flange with an opening in communication with the opening of the top flange. A magnetic filter slidably lodges within the housing in communication with the opening of the top flange and the opening of the bottom flange in order to filter magnetically any particulate matter passing through the top and the bottom opening. A gate valve slidably lodges within the housing between the opening in the top flange and the magnetic filter in order to control the flow of particulate matter through and between the opening in the top flange and the opening in the bottom flange.

Inventors

  • 👤 Richard P. Meister

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 20:19
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/26; B03C1/28; B03C1/284

Claims Analysis

Total Claims: 22
Claim 1
Independent Claim 153 words
A drawer filter comprising in combination a housing means having three solid housing sides and a front side having a front opening, said housing means further including a top flange opening and a bottom flange opening in communication with the top flange opening; a magnetic filtering means slidably passing through said front opening to slidably lodge within said housing means between said top flange opening and said bottom flange opening; a gate valve means slidably disposed within said housing means between said top flange opening and said magnetic filtering means in order to control the flow of particulate matter through and between said top flange opening and said bottom flange opening, said gate valve means comprising a valve plate means having a generally horizontal planar surface; and at least one rod means secured to said valve plate means and slidably disposed through said housing means and adapted to move said valve plate means.
Claim 2
Dependent Claim 153 words
A drawer filter comprising in combination a housing means having three solid housing sides and a front side having a front opening, said housing means further including a top flange opening and a bottom flange opening in communication with the top flange opening; a magnetic filtering means slidably passing through said front opening to slidably lodge within said housing means between said top flange opening and said bottom flange opening; a gate valve means slidably disposed within said housing means between said top flange opening and said magnetic filtering means in order to control the flow of particulate matter through and between said top flange opening and said bottom flange opening, said gate valve means comprising a valve plate means having a generally horizontal planar surface; and at least one rod means secured to said valve plate means and slidably disposed through said housing means and adapted to move said valve plate means.
Claim 3
Dependent Claim 51 words
The drawer filter of claim 1 wherein said top flange opening and said bottom flange opening and said magnetic filtering means are in a general aligned relationship with respect to each other in order to filter magnetically any particulate matter, passing through said top flange opening and said bottom flange opening.
Claim 4
Dependent Claim 37 words
The drawer filter of claim 1 wherein said magnetic filtering means comprises a front plate means, a back plate means, and a plurality of magnetic cylinder means interconnecting said front plate means with said back plate means.
Claim 5
Dependent Claim 24 words
The drawer filter of claim 3 wherein said front plate means and said back plate means are each unitary with no opening or apertures.
Claim 6
Dependent Claim 52 words
The drawer filter of claim 4 wherein said plurality of magnetic cylinder means includes at least one magnetic row of magnetic cylinder means and said unitary front plate means with no openings or apertures generally defines part of said housing sides when said magnetic filtering means is disposed within said housing means.
Claim 7
Dependent Claim 38 words
The drawer filter of claim 4 wherein said plurality of magnetic cylinder means comprises a first magnetic row of cylinder means and a second magnetic row of cylinder means parallelly disposed with respect to said first magnetic row.
Claim 8
Dependent Claim 14 words
The drawer filter of claim 4 wherein said unitary front plate means is transparent.
Claim 9
Dependent Claim 16 words
The drawer filter of claim 1 wherein said housing means defines generally a rectangular box-like structure.
Claim 10
Dependent Claim 17 words
The drawer filter of claim 1 additionally comprising a particulate feed means supported by said housing means.
Claim 11
Dependent Claim 281 words
A drawer filter comprising in combination a housing means having housing sides and a structure defining a top flange means including a top flange opening and a bottom flange means including a bottom flange opening in communication with the top flange opening; a magnetic filtering means slidably lodged within said housing means between said top flange opening and said bottom flange opening such that said top flange opening and said bottom flange opening and said magnetic filtering means are in a general aligned relationship with respect to each other in order to filter magnetically any particulate matter passing through said top flange opening and said bottom flange opening, said magnetic filtering means comprises a unitary front plate means with no openings or apertures communicating with the atmosphere, a unitary back plate means with no openings or apertures communicating with the atmosphere, and a plurality of magnetic cylinder means interconnecting said unitary front plate means with said unitary back plate means, said plurality of magnetic cylinder means including at least one magnetic row of cylinder means, and said unitary front plate means generally defining part of said housing sides when said magnetic filtering means is disposed within said housing means; a gate valve means slidably disposed within said housing means between said top flange opening and said magnetic filtering means in order to control the flow of particulate matter through and between said top flange and said bottom flange opening, said gate valve means comprising a valve plate means having a generally horizontal planar surface; and at least one rod means secured to said valve plate means and slidably disposed through said housing means and adapted to move said valve plate means.
Claim 12
Dependent Claim 281 words
A drawer filter comprising in combination a housing means having housing sides and a structure defining a top flange means including a top flange opening and a bottom flange means including a bottom flange opening in communication with the top flange opening; a magnetic filtering means slidably lodged within said housing means between said top flange opening and said bottom flange opening such that said top flange opening and said bottom flange opening and said magnetic filtering means are in a general aligned relationship with respect to each other in order to filter magnetically any particulate matter passing through said top flange opening and said bottom flange opening, said magnetic filtering means comprises a unitary front plate means with no openings or apertures communicating with the atmosphere, a unitary back plate means with no openings or apertures communicating with the atmosphere, and a plurality of magnetic cylinder means interconnecting said unitary front plate means with said unitary back plate means, said plurality of magnetic cylinder means including at least one magnetic row of cylinder means, and said unitary front plate means generally defining part of said housing sides when said magnetic filtering means is disposed within said housing means; a gate valve means slidably disposed within said housing means between said top flange opening and said magnetic filtering means in order to control the flow of particulate matter through and between said top flange and said bottom flange opening, said gate valve means comprising a valve plate means having a generally horizontal planar surface; and at least one rod means secured to said valve plate means and slidably disposed through said housing means and adapted to move said valve plate means.
Claim 13
Dependent Claim 38 words
The drawer filter of claim 10 wherein said plurality of magnetic cylinder means comprises a first magnetic row of cylinder means and a second magnetic row of cylinder means parallelly disposed with respect to said first magnetic row.
Claim 14
Dependent Claim 16 words
The drawer filter of claim 10 wherein said housing means defines generally a rectangular box-like structure.
Claim 15
Dependent Claim 14 words
The drawer filter of claim 10 wherein said unitary front plate means is transparent.
Claim 16
Dependent Claim 17 words
The drawer filter of claim 10 additionally comprising a particulate feed means supported by said housing means.
Claim 17
Dependent Claim 306 words
A drawer filter comprising in combination a generally rectangular box-like housing means having housing sides and a structure defining a top flange means including a top flange opening and a bottom flange means including a bottom flange opening in communication with the top flange opening; a magnetic filtering means slidably lodged within said box-like housing means between said top flange opening and said bottom flange opening such that said top flange opening and said botton flange opening and said magnetic filtering means are in a general aligned relationship with respect to each other in order to filter magnetically any particulate matter passing through said top flange opening and said bottom flange opening, said magnetic filtering means comprising a transparent unitary front plate means with no openings or apertures communicating with the atmosphere, a unitary back plate means with no opening or apertures communicating with the atmosphere, and a plurality of magnetic cylinder means interconnecting said unitary front plate means with said unitary back plate means, said plurality of magnetic cylinder means including a first magnetic row of cylinder means and a second magnetic row of cylinder means parallelly disposed with respect to said first magnetic row, and said transparent unitary front plate means generally defining part of said housing sides when said magnetic filtering means is disposed within said box-like housing means; a gate valve means slidably disposed within said housing means between said top flange opening and said magnetic filtering means in order to control the flow of particulate matter through and between said top flange opening and said bottom flange opening, said gate valve means comprising a valve plate means having a generally horizontal planar surface; and at least one rod means secured to said valve plate means and slidably disposed through said box-like housing means and adapted to move said valve plate means.
Claim 18
Dependent Claim 306 words
A drawer filter comprising in combination a generally rectangular box-like housing means having housing sides and a structure defining a top flange means including a top flange opening and a bottom flange means including a bottom flange opening in communication with the top flange opening; a magnetic filtering means slidably lodged within said box-like housing means between said top flange opening and said bottom flange opening such that said top flange opening and said botton flange opening and said magnetic filtering means are in a general aligned relationship with respect to each other in order to filter magnetically any particulate matter passing through said top flange opening and said bottom flange opening, said magnetic filtering means comprising a transparent unitary front plate means with no openings or apertures communicating with the atmosphere, a unitary back plate means with no opening or apertures communicating with the atmosphere, and a plurality of magnetic cylinder means interconnecting said unitary front plate means with said unitary back plate means, said plurality of magnetic cylinder means including a first magnetic row of cylinder means and a second magnetic row of cylinder means parallelly disposed with respect to said first magnetic row, and said transparent unitary front plate means generally defining part of said housing sides when said magnetic filtering means is disposed within said box-like housing means; a gate valve means slidably disposed within said housing means between said top flange opening and said magnetic filtering means in order to control the flow of particulate matter through and between said top flange opening and said bottom flange opening, said gate valve means comprising a valve plate means having a generally horizontal planar surface; and at least one rod means secured to said valve plate means and slidably disposed through said box-like housing means and adapted to move said valve plate means.
Claim 19
Dependent Claim 18 words
The drawer filter of claim 15 additionally comprising a particulate feed means supported by said top flange means.
Claim 20
Dependent Claim 27 words
The drawer filter of claim 15 wherein said valve plate means comprises a first pair of generally parallel sides and a second pair of generally parallel sides.
Claim 21
Dependent Claim 140 words
The drawer filter of claim 17 comprising a pair of said rod means slidably disposed through said box-like housing means and attached to said first pair of generally parallel sides such that said pair of rod means are oppositely disposed with respect to each other; one of said second pair of generally parallel sides of said valve plate means terminating into a beveled edge, the remaining side of said second pair of parallel sides having an edge which registers with an end of each of said pair of rod means; and a gate handle means secured to the remaining available end of each of said pair of rod means for slidably moving the gate valve means within said housing means such that the valve plate means obstructs the top flange opening as desired in order to control the flow therethrough.
Claim 22
Dependent Claim 24 words
The drawer filter of claim 18 wherein said horizontal planar surface of said valve plate means registers tangentially with said pair of rod means.

References Cited (Backward Citations)

US2830705A Cited
US2912106A Cited
US3160583A Cited
US4144012A Cited
US4340470A Cited
US4457838A Cited
US4620923A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1991-06-14 1991-12-14 1992-06-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1995-06-14 1995-12-14 1996-06-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1999-06-14 1999-12-14 2000-06-14 $7700.00 Window Closed / Lapsed

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