US4559064A — Electrostatic precipitator having spacers

Claim 1

Independent Claim 172 words

An improved spacer for maintaining a pair of adjacent electrostatic precipitator plates in a horizontally spaced relationship, wherein each of said plates is of the type having a generally planar vertically extending surface spaced horizontally from and extending parallel with the planar surface of the adjacent plate, and in which a vertically extending rib is formed on each of the plates and projects perpendicularly from the planar surface inwardly toward the rib on the adjacent plate, said spacer including: (a) rigid frame means having upper and lower cross members joined by at least one generally vertical extending member, said frame means being adapted to extend horizontally between a pair of the spaced ribs formed on the precipitator plates for maintaining the plates in a predetermined horizontal spaced relationship; and (b) a pair of guide means formed on the frame means for slidably frictional clamping engagement with the spaced ribs for slidably vertically adjustably mounting said frame means on said ribs in a generally horizontally extending position between the horizontally spaced adjacent plates.

Claim 2

Dependent Claim 172 words

An improved spacer for maintaining a pair of adjacent electrostatic precipitator plates in a horizontally spaced relationship, wherein each of said plates is of the type having a generally planar vertically extending surface spaced horizontally from and extending parallel with the planar surface of the adjacent plate, and in which a vertically extending rib is formed on each of the plates and projects perpendicularly from the planar surface inwardly toward the rib on the adjacent plate, said spacer including: (a) rigid frame means having upper and lower cross members joined by at least one generally vertical extending member, said frame means being adapted to extend horizontally between a pair of the spaced ribs formed on the precipitator plates for maintaining the plates in a predetermined horizontal spaced relationship; and (b) a pair of guide means formed on the frame means for slidably frictional clamping engagement with the spaced ribs for slidably vertically adjustably mounting said frame means on said ribs in a generally horizontally extending position between the horizontally spaced adjacent plates.

Claim 3

Dependent Claim 14 words

The spacer defined in claim 1 in which the guide means include U-shaped channels.

Claim 4

Dependent Claim 46 words

The spacer defined in claim 1 in which the frame means is a circular bar with diametrically opposite arcuate portions of said bar forming the upper and lower cross members; and in which the guide means is two pairs of U-shaped hooks attached to said bar.

Claim 5

Dependent Claim 91 words

The spacer defined in claim 1 in which the frame means is a generally triangular-shaped bar having a vertical leg and a pair of converging legs, with said vertical leg being the at least one generally vertical extending frame member of the frame means and said pair of converging legs being the upper and lower cross members of said frame means; and in which the guide means includes a pair of spaced U-shaped hooks attached to the vertical leg and a U-shaped channel mounted on the ends of the converging legs.

Claim 6

Dependent Claim 127 words

The spacer defined in claim 1 in which the frame means include a pair of rectangular-shaped frames, each frame having a pair of spaced horizontal legs connected to a pair of spaced vertical legs, with said vertical legs being the generally vertical extending frame member of the frame means and said horizontal legs being the upper and lower cross members of said frame means; in which clamps means is attached to the horizontal legs of one of the frames for engagement with the horizontal legs of the other frame for attaching together the two frames; and in which the vertical legs of the frames clamp the plate ribs therebetween to form the guide means when the two frames are attached together by the horizontal leg clamp means.

Claim 7

Dependent Claim 32 words

The spacer defined in claim 5 in which the clamp means include a pair of U-shaped hooks mounted in a spaced relationship on each of the horizontal legs of said one frame.

Claim 8

Dependent Claim 19 words

The spacer defined in claim 5 in which the frames are formed of metal bars circular in cross section.

Claim 9

Dependent Claim 18 words

The spacer defined in claim 5 in which the frames are generally equal in size to each other.

Claim 10

Dependent Claim 108 words

The spacer defined in claim 5 in which the vertical legs of one of the frame members have U-shaped formations which project outwardly from said legs; in which the horizontal legs when clamped together by the clamp means lie in abutting relationship with respect to each other on one side of an imaginary plane extending vertically between the spaced plate ribs on which the frames are adapted to be clamped; and in which the U-shaped formations are located on an opposite side of said imaginary plane from the horizontal legs and are adapted to be clamped against the plate ribs to slidably mount the frames on said ribs.

Claim 11

Dependent Claim 79 words

The spacer defined in claim 9 in which the clamp means is a section of round bar stock attached to each of the horizontal legs; and in which the frame having the U-shaped formations has sufficient resiliency to extend between opposite sides of the imaginary plane and clamp against the plate ribs to provide the guide means for slidably adjustably mounting the frame means on said ribs when the frames are clamped together by the bar stock clamp means.

Claim 12

Dependent Claim 114 words

The spacer defined in claim 1 in which the frame means includes a rectangular-shaped frame formed of steel bar having a pair of spaced horizontal legs forming the upper and lower cross members of said frame means and a pair of connected spaced vertical legs forming the at least one generally vertical extending frame member; and in which the guide means includes two pairs of U-shaped hooks, each pair being mounted on a respective vertical frame leg, said hooks being adapted to slidably frictionally engage the spaced ribs to mount the frame on said ribs with the horizontal legs extending horizontally between the spaced plates to maintain said plates in their predetermined spaced relationship.

Claim 13

Dependent Claim 121 words

An electrostatic precipitator including a plurality of collector electrode plates; means for suspending said plates in a horizontally spaced, vertically hanging position; said spaced plates having vertically extending ribs formed thereon and projecting inwardly toward the ribs of the horizontally spaced adjacent plate; frame means for extending horizontally between the plate ribs for maintaining the horizontal spacing between the suspended plates, said frame means having rigid upper and lower cross members joined by at least one generally vertical extending connecting member; and a pair of guide means formed on the frame means, said guide means slidably frictionally connecting the frame means to the ribs for manually moving the frame means along the ribs to a predetermined position between the spaced plates.

Claim 14

Dependent Claim 121 words

An electrostatic precipitator including a plurality of collector electrode plates; means for suspending said plates in a horizontally spaced, vertically hanging position; said spaced plates having vertically extending ribs formed thereon and projecting inwardly toward the ribs of the horizontally spaced adjacent plate; frame means for extending horizontally between the plate ribs for maintaining the horizontal spacing between the suspended plates, said frame means having rigid upper and lower cross members joined by at least one generally vertical extending connecting member; and a pair of guide means formed on the frame means, said guide means slidably frictionally connecting the frame means to the ribs for manually moving the frame means along the ribs to a predetermined position between the spaced plates.

Claim 15

Dependent Claim 24 words

The precipitator defined in claim 12 in which the ribs are formed by interlocked end flanges formed on the edges of abutting electrode plates.

Claim 16

Dependent Claim 76 words

The precipitator defined in claim 12 in which the frame means include at least one frame member formed of a steel bar having the upper and lower cross members and the at least one vertical extending member of the frame means; in which the guide means include U-shaped hook members formed on the frame member; and in which the U-shaped hook members are slidably clampingly engaged with the ribs to adjustably mount the frame member thereon.

Claim 17

Dependent Claim 105 words

The precipitator defined in claim 12 in which the frame means includes two frame members each having a generally rectangular configuration having the upper and the at least one lower cross members and vertical extending member of the frame means; and in which clamp members are formed on the upper and lower cross members of at least one of the frame members for clamping said frame members together whereby portions of the frame members form the guide means to provide the pressure engagement with the ribs and to clamp the spaced ribs between the frame members to slidably mount the frame means on said ribs.

Claim 18

Dependent Claim 92 words

The precipitator defined in claim 15 in which each of the frame members includes a pair of spaced horizontal legs which form the upper and lower cross members and a pair of spaced vertical legs which form the at least one vertical extending member of the frame means; in which the vertical legs are joined to said horizontal legs; and in which the clamp members are formed on the horizontal legs of at least one of the frame members and are clampingly engaged with the horizontal legs of the other frame members.

Claim 19

Dependent Claim 62 words

The precipitator defined in claim 16 in which outwardly extending projections are formed on the vertical legs of one of the frame members; and in which the ribs are clamped between the vertical leg projections of said one frame member and the vertical legs of the other frame member to form the guide means to provide the pressure engagement with the ribs.

Claim 20

Dependent Claim 53 words

The precipitator defined in claim 17 in which the horizontal legs clamped together by the clamp members are located on one side of an imaginary plane extending vertically between the spaced ribs; and in which the vertical leg projections are located on an opposite side of the imaginary plane from the horizontal legs.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1988-12-16	1989-06-17	1989-12-17	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1992-12-16	1993-06-17	1993-12-17	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1996-12-16	1997-06-17	1997-12-17	$7700.00	Window Closed / Lapsed

Electrostatic precipitator having spacers

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