US5053202A — Static mixer configuration

Claim 1

Independent Claim 161 words

A static mixer adapted for use with a plural component dispensing apparatus for the dispensing of a substance formed for the mixing and reaction of plural components that are fed into a housing with a predetermined cross section at a first upstream end and exit the housing at an opposing second downstream end, comprising: (a) a plurality of continuous helical mixer element within the housing between the first end and opposing second end, the mixer elements extending a first length within the housing; and (b) a flat elongated planar spacer extending a second length and across substantially the entire cross section of the housing disposed intermediate at least one pair of the continuous plurality of mixer elements, downstream of the first of the pair of elements and upstream of the second of the pair of elements, the ratio of the second length of the spacer to the first length of the mixer elements being at least about 0.10 to about 0.30.

Claim 2

Dependent Claim 161 words

A static mixer adapted for use with a plural component dispensing apparatus for the dispensing of a substance formed for the mixing and reaction of plural components that are fed into a housing with a predetermined cross section at a first upstream end and exit the housing at an opposing second downstream end, comprising: (a) a plurality of continuous helical mixer element within the housing between the first end and opposing second end, the mixer elements extending a first length within the housing; and (b) a flat elongated planar spacer extending a second length and across substantially the entire cross section of the housing disposed intermediate at least one pair of the continuous plurality of mixer elements, downstream of the first of the pair of elements and upstream of the second of the pair of elements, the ratio of the second length of the spacer to the first length of the mixer elements being at least about 0.10 to about 0.30.

Claim 3

Dependent Claim 29 words

The static mixer according to claim 1 wherein the ratio of the length of the spacer to the plurality of mixer elements is from about 0.15 to about 0.25.

Claim 4

Dependent Claim 20 words

The static mixer according to claim 1 wherein a plurality of spacers are employed intermediate the plurality of mixer elements.

Claim 5

Dependent Claim 19 words

The static mixer according to claim 1 wherein the flat elongated planar spacer has a plurality of openings therein.

Claim 6

Dependent Claim 24 words

The static mixer according to claim 1 wherein each of the mixer elements comprises a series of a plurality of adjacent segmented helical elements.

Claim 7

Dependent Claim 19 words

The static mixer according to claim 5 wherein the plurality of mixer elements are detachably fastened to the spacer.

Claim 8

Dependent Claim 22 words

The static mixer according to claim 6 wherein the plurality of mixer elements are detachably fastened to the spacer by interlocking notches.

Claim 9

Dependent Claim 193 words

In a plural component dispensing apparatus for the dispensing of a foam formed from the mixing and reaction of an isocyanate component delivered through an isocyanate feed line and a polyol component delivered through a polyol feed line, the isocyanate and polyol components being fed in through a first end of a static mixer to form a stream which is mixed and reacted therein to form the foam which is dispensed from an opposing second end of the static mixer, the improvement comprising: a flat elongated planar spacer in the static mixer disposed intermediate at least one pair of a plurality of helical mixer elements of a first length between the first end and the opposing second end within a housing having a predetermined cross section the elongated planar spacer being downstream of the first of the pair of elements and upstream of the second of the pair of elements and extending across substantially the entire cross section and having a second length such that the ratio of the second length of the spacer to the first length of the plurality of helical mixer elements is at least about 0.10 to about 0.30.

Claim 10

Dependent Claim 193 words

In a plural component dispensing apparatus for the dispensing of a foam formed from the mixing and reaction of an isocyanate component delivered through an isocyanate feed line and a polyol component delivered through a polyol feed line, the isocyanate and polyol components being fed in through a first end of a static mixer to form a stream which is mixed and reacted therein to form the foam which is dispensed from an opposing second end of the static mixer, the improvement comprising: a flat elongated planar spacer in the static mixer disposed intermediate at least one pair of a plurality of helical mixer elements of a first length between the first end and the opposing second end within a housing having a predetermined cross section the elongated planar spacer being downstream of the first of the pair of elements and upstream of the second of the pair of elements and extending across substantially the entire cross section and having a second length such that the ratio of the second length of the spacer to the first length of the plurality of helical mixer elements is at least about 0.10 to about 0.30.

Claim 11

Dependent Claim 22 words

The plural component dispensing apparatus according to claim 8 wherein a plurality of spacers are employed intermediate the plurality of mixer elements.

Claim 12

Dependent Claim 19 words

The plural component dispensing apparatus according to claim 8 wherein the spacer comprises a gap spacing within the housing.

Claim 13

Dependent Claim 37 words

The plural component dispensing apparatus according to claim 8 further comprising means for feeding an air feed stream into the housing of the static mixer concurrently with isocyanate and polyol components to enhance mixing of the components.

Claim 14

Dependent Claim 25 words

The plural component dispensing apparatus according to claim 11 further comprising means for feeding the air feed stream into the housing with the isocyanate component.

Claim 15

Dependent Claim 22 words

The plural component dispensing apparatus according to claim 8 wherein the generally planar and elongated spacer has a plurality of openings therein.

Claim 16

Dependent Claim 23 words

The plural component dispensing apparatus according to claim 13 wherein the plurality of spacers comprise a plurality of gap spacings within the housing.

Claim 17

Dependent Claim 25 words

The plural component dispensing apparatus according to claim 8 wherein each of the mixer elements comprise a series of a plurality of adjacent segmented elements.

Claim 18

Dependent Claim 21 words

The plural component dispensing apparatus according to claim 15 wherein the plurality of mixer elements are detachably fastened to the spacer.

Claim 19

Dependent Claim 24 words

The plural component dispensing apparatus according to claim 16 wherein the plurality of mixer elements are detachably fastened to the spacer by interlocking notches.

Claim 20

Dependent Claim 31 words

The plural component dispensing apparatus according to claim 17 wherein the ratio of the length of the spacer to the plurality of mixer elements is from about 0.15 to about 0.25.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1994-09-30	1995-04-01	1995-10-01	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1998-09-30	1999-04-01	1999-10-01	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2002-09-30	2003-04-01	2003-10-01	$7700.00	Window Closed / Lapsed

Static mixer configuration

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