US3647002A — Apparatus for admixing fluids in predetermined pr…

Claim 1

Independent Claim 321 words

Fire fighting apparatus for effecTing optimum fire extinguishing agent by admixing a fluid concentrate with water in a predetermined proportion regardless of rate of flow of the water comprising: a. a water supply means for delivering water at a predetermined pressure; b. a fluid concentrate supply means for delivering a fluid concentrate and including means for effecting and maintaining the delivery pressure of said fluid concentrate at substantially said predetermined pressure; c. a first elongate throat means and a first valve means in fluid communication with said water supply means, having a zero flow position and adapted to effect a first monotonically increasing flow area between said first valve means and said first throat means at increasing rates of flow of said water therethrough; d. biasing means biasing said valve means toward said zero flow position with a force sufficient to require at least 2.5 pounds per square inch (p.s.i.) pressure differential across said valve means to open it for flow of said water therepast; e. a second elongate throat means and second valve means in fluid communication with said fluid concentrate supply means, having a zero flow position and adapted to effect a second monotonically increasing flow area between said second throat means and said second valve means that is a predetermined function of said first monotonically increasing flow area; f. means drivingly connecting said first valve means with said second valve means such that said second valve means is moved responsively to and as a second predetermined function of movement of said first valve means; said second predetermined function effecting increased flow through said second valve means when said first valve means is moved to effect increased flow therethrough and vice versa; and g. discharge and delivery means in fluid communication with the effluent end of said first and second throats for combining the respective fluids flowing therethrough to form and deliver said fire extinguishing agent onto a target.

Claim 2

Dependent Claim 321 words

Fire fighting apparatus for effecTing optimum fire extinguishing agent by admixing a fluid concentrate with water in a predetermined proportion regardless of rate of flow of the water comprising: a. a water supply means for delivering water at a predetermined pressure; b. a fluid concentrate supply means for delivering a fluid concentrate and including means for effecting and maintaining the delivery pressure of said fluid concentrate at substantially said predetermined pressure; c. a first elongate throat means and a first valve means in fluid communication with said water supply means, having a zero flow position and adapted to effect a first monotonically increasing flow area between said first valve means and said first throat means at increasing rates of flow of said water therethrough; d. biasing means biasing said valve means toward said zero flow position with a force sufficient to require at least 2.5 pounds per square inch (p.s.i.) pressure differential across said valve means to open it for flow of said water therepast; e. a second elongate throat means and second valve means in fluid communication with said fluid concentrate supply means, having a zero flow position and adapted to effect a second monotonically increasing flow area between said second throat means and said second valve means that is a predetermined function of said first monotonically increasing flow area; f. means drivingly connecting said first valve means with said second valve means such that said second valve means is moved responsively to and as a second predetermined function of movement of said first valve means; said second predetermined function effecting increased flow through said second valve means when said first valve means is moved to effect increased flow therethrough and vice versa; and g. discharge and delivery means in fluid communication with the effluent end of said first and second throats for combining the respective fluids flowing therethrough to form and deliver said fire extinguishing agent onto a target.

Claim 3

Dependent Claim 24 words

The apparatus of claim 1 wherein said first and second valve means are connected together to move in unison and in the same direction.

Claim 4

Dependent Claim 39 words

The apparatus of claim 1 wherein said second throat means is movably positioned with respect to said second valve means for adjusting the concentration of said fluid concentrate being admixed with said water to form said fire extinguishing agent.

Claim 5

Dependent Claim 32 words

The apparatus of claim 1 wherein said first and second valve means move in the same direction along parallel axes that are also parallel with the axes of the respective throat means.

Claim 6

Dependent Claim 70 words

The apparatus of claim 1 wherein said fluid concentrate supply means comprises: a. a reservoir; b. a pump connected at its intake with said reservoir and at its discharge with the inlet of said second throat means; and c. pressure relief means for bypassing said fluid concentrate back to said reservoir when the pressure immediately upstream of said second throat means and said second valve means exceeds the predetermined pressure.

Claim 7

Dependent Claim 49 words

The apparatus of claim 5 wherein said pressure relief means is also responsively connected with said water supply means immediately upstream of said first throat and said first valve means for maintaining said predetermined pressure substantially equal for both said water supply means and said fluid concentrate supply means.

Claim 8

Dependent Claim 320 words

Apparatus for mixing fluids in a predetermined proportion regardless of rate of flow comprising: a. a first fluid supply means for delivering said first fluid at a predetermined pressure; b. a second fluid supply means for delivering said second fluid and including means for effecting and maintaining the delivery pressure of said second fluid at substantially said predetermined pressure; c. a first elongate throat means and a first valve means in fluid communication with said first fluid supply means, having a zero flow position, and being adapted to effect a first monotonically increasing flow Area between said first throat means and said valve means at increasing rates of flow of said first fluid therethrough; d. biasing means biasing said first valve means toward said zero flow position with a force sufficient to require at least 2.5 pounds per square inch (p.s.i.) pressure differential across said valve means to open it for flow of said first fluid therepast; e. a second elongate throat means and a second valve means in fluid communication with said second fluid supply means, having a zero flow position, and adapted to effect a second monotonically increasing flow area between said second throat means and said second valve means at increasing rates of flow of said second fluid therethrough, said second monotonically increasing flow area being a predetermined function of said first monotonically increasing flow area; f. means drivingly connecting said first valve means with said second valve means such that said second valve means is moved responsively to and as a second predetermined function of movement of said first valve means for controlling flow of said second fluid therepast; said second predetermined function effecting increased flow when said first valve means is moved to effect increased flow therethrough and vice versa; and g. discharge means in fluid communication with the effluent end of said first and said second throats for admixing the respective fluids flowing therethrough.

Claim 9

Dependent Claim 320 words

Apparatus for mixing fluids in a predetermined proportion regardless of rate of flow comprising: a. a first fluid supply means for delivering said first fluid at a predetermined pressure; b. a second fluid supply means for delivering said second fluid and including means for effecting and maintaining the delivery pressure of said second fluid at substantially said predetermined pressure; c. a first elongate throat means and a first valve means in fluid communication with said first fluid supply means, having a zero flow position, and being adapted to effect a first monotonically increasing flow Area between said first throat means and said valve means at increasing rates of flow of said first fluid therethrough; d. biasing means biasing said first valve means toward said zero flow position with a force sufficient to require at least 2.5 pounds per square inch (p.s.i.) pressure differential across said valve means to open it for flow of said first fluid therepast; e. a second elongate throat means and a second valve means in fluid communication with said second fluid supply means, having a zero flow position, and adapted to effect a second monotonically increasing flow area between said second throat means and said second valve means at increasing rates of flow of said second fluid therethrough, said second monotonically increasing flow area being a predetermined function of said first monotonically increasing flow area; f. means drivingly connecting said first valve means with said second valve means such that said second valve means is moved responsively to and as a second predetermined function of movement of said first valve means for controlling flow of said second fluid therepast; said second predetermined function effecting increased flow when said first valve means is moved to effect increased flow therethrough and vice versa; and g. discharge means in fluid communication with the effluent end of said first and said second throats for admixing the respective fluids flowing therethrough.

Claim 10

Dependent Claim 33 words

The apparatus of claim 7 wherein said second throat means is removably and movably positionable with respect to said second valve means for adjusting the relative proportion of the respective fluids being admixed.

Claim 11

Dependent Claim 319 words

A demand proportioner that is operable over a wide range of flow rates and effects increased flow of a second fluid concommitantly with increased flow of a first fluid comprising: a. first connection means for connecting with a supply means for delivering a first fluid; b. a first elongate throat means and a first valve means in fluid communication with said first connection means, having a zero flow position, and adapted to effect a first monotonically increasing flow area between said first valve means and said first throat means at increasing rates of flow of said first fluid therethrough; c. biasing means biasing said first valve means toward said zero flow position with a force sufficient to require at least 2.5 pounds per square inch (p.s.i.) pressure differential across said first valve means to open it for flow of said first fluid therethrough; d. second connection means for connecting with a second supply means for delivering a second fluid; e. a second elongate throat means and second valve means in fluid communication with said second connection means, having a zero flow position, and adapted to effect a second monotonically increasing flow area between said second valve means and said second throat means that is a predetermined function of said first monotonically increasing flow area; f. means drivingly connecting said first valve means with said second valve means such that said second valve means is moved responsively to and as a second predetermined function of movement of said first valve means; said second predetermined function effecting increased flow when said first valve means is moved to effect increased flow and vice versa; said first and second throat means being adapted to be operable when said first and second fluids are delivered at substantially equal pressures; and g. discharge means in fluid communication with the effluent end of said first and second throat means for admixing the respective fluids flowing therethrough.

Claim 12

Dependent Claim 319 words

A demand proportioner that is operable over a wide range of flow rates and effects increased flow of a second fluid concommitantly with increased flow of a first fluid comprising: a. first connection means for connecting with a supply means for delivering a first fluid; b. a first elongate throat means and a first valve means in fluid communication with said first connection means, having a zero flow position, and adapted to effect a first monotonically increasing flow area between said first valve means and said first throat means at increasing rates of flow of said first fluid therethrough; c. biasing means biasing said first valve means toward said zero flow position with a force sufficient to require at least 2.5 pounds per square inch (p.s.i.) pressure differential across said first valve means to open it for flow of said first fluid therethrough; d. second connection means for connecting with a second supply means for delivering a second fluid; e. a second elongate throat means and second valve means in fluid communication with said second connection means, having a zero flow position, and adapted to effect a second monotonically increasing flow area between said second valve means and said second throat means that is a predetermined function of said first monotonically increasing flow area; f. means drivingly connecting said first valve means with said second valve means such that said second valve means is moved responsively to and as a second predetermined function of movement of said first valve means; said second predetermined function effecting increased flow when said first valve means is moved to effect increased flow and vice versa; said first and second throat means being adapted to be operable when said first and second fluids are delivered at substantially equal pressures; and g. discharge means in fluid communication with the effluent end of said first and second throat means for admixing the respective fluids flowing therethrough.

Claim 13

Dependent Claim 25 words

The demand proportioner of claim 9 wherein said first and second valve means are connected together to move in unison and in the same direction.

Claim 14

Dependent Claim 33 words

The demand proportiner of claim 9 wherein said first and second valve means move in the same direction along parallel axes that are also parallel with the axes of the respective throat means.

Claim 15

Dependent Claim 34 words

The demand proportioner of claim 9 wherein said second throat means is removably and movably positionable with respect to said second valve means for adjusting the relative proportion of the respective fluids being admixed.

Claim 16

Dependent Claim 49 words

The demand proportioner of claim 9 wherein said biasing means biases said first valve means toward said zero flow position with a force sufficient to require 5 pounds per square inch (p.s.i.) pressure differential across said first valve means to open it for flow of said first fluid therepast.

Claim 17

Dependent Claim 34 words

The demand proportioner of claim 9 wherein said second throat means is removably and movably positionable with respect to said second valve means for adjusting the relative proportion of respective fluids being flowed therethrough.

Claim 18

Dependent Claim 61 words

The demand proportioner of claim 9 wherein said biasing means comprises a spring having a spring constant; and said first valve means is formed as a light weight structure such that response of said first valve means to flow of a fluid therepast is governed substantially entirely by said spring constant, and said demand proportioner may be employed in any position.

Claim 19

Dependent Claim 108 words

The demand proportioner of claim 9 wherein said first valve means is retained by a guide rod, is movable longitudinally of said guide rod; said guide rod is employed in a vertical position; said biasing means comprises a spring and the weight of said first valve means; and said first valve means is formed of a heavy material such that the weight of said first valve means is a significant part of said biasing means; whereby said demand proportioner may employ a relatively more elongated throat means for longer travel of said first valve means, without requiring high-pressure drop across said first valve means at high flow rates.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1975-03-07	1975-09-06	1976-03-07	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1979-03-07	1979-09-06	1980-03-07	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1983-03-07	1983-09-06	1984-03-07	$7700.00	Window Closed / Lapsed

Apparatus for admixing fluids in predetermined proportions

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