US3795364A
Expired / Lapsed
US
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Apparatus for applying high viscosity mixture of reactive components
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1973-05-25
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Granted: 1974-03-05
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Expires: 1993-05-25
Abstract
Abstract A greatly simplified apparatus for mixing and dispensing a high viscosity mixture of reactive components, such as the components of a urethane-based adhesive. The apparatus consists essentially of an elongated hollow member having an input end and an output end, the member defining a mixing chamber and terminating in a nozzle at its output end. A mixing means is located within the hollow member and acts in cooperation therewith such that, after the first and second reactive components pass through the hollow member under pressure, the reactive components comprise a generally homogeneous mixture. A body member is fixedly mounted to the input end of the hollow member and is adapted to have a plurality of valves mounted thereto. There is a first valve and a second valve mounted on the body member, the first valve having an inlet and a pressurized source of the first reactive component connected thereto, the second valve having an inlet and a pressurized source of the second reactive component connected thereto. Each of the valves has an outlet in permanent, open communication with the mixing chamber by means of a passageway through the body member such that during intermittent stopping and starting of the flow of the components and the mixture, a smooth-walled, continuous flow path is presented to the materials, thus greatly reducing the possibility of build-up of hardened materials within the gun.
Inventors
- 👤 R Kattner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:04
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/74; B29B7/7438; B29B7/7442; B29B7/30; B29B7/34; B29B7/38; B29B7/40; B29B7/401; B29B7/402; B29B7/405; B29B7/407; B29B7/408; B29B7/7447
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
185 words
Apparatus for mixing a first reactive component and a second reactive component and applying the mixture, said apparatus consisting essentially of: a. an elongated hollow member having an input end and an output end, said member defining a mixing chamber and terminating in a nozzle at said output end; b. mixing means located within said hollow member and acting in cooperation therewith such that, after the first and second reactive components pass through said hollow member under pressure, the reactive components comprise a generally homogeneous mixture; c. a body member fixedly mounted to said input end of said hollow member and adapted to have a plurality of valves mounted thereto; d. a first valve and a second valve mounted on said body member, said first valve having an inlet bore and a pressurized source of the first reactive component connected thereto, said second valve having an inlet bore and a pressurized source of the second reactive component connected thereto; e. each of said valves having an outlet bore in permanent, open communication with said mixing chamber, by means of a passageway through said body member.
Claim 2
Dependent Claim
185 words
Apparatus for mixing a first reactive component and a second reactive component and applying the mixture, said apparatus consisting essentially of: a. an elongated hollow member having an input end and an output end, said member defining a mixing chamber and terminating in a nozzle at said output end; b. mixing means located within said hollow member and acting in cooperation therewith such that, after the first and second reactive components pass through said hollow member under pressure, the reactive components comprise a generally homogeneous mixture; c. a body member fixedly mounted to said input end of said hollow member and adapted to have a plurality of valves mounted thereto; d. a first valve and a second valve mounted on said body member, said first valve having an inlet bore and a pressurized source of the first reactive component connected thereto, said second valve having an inlet bore and a pressurized source of the second reactive component connected thereto; e. each of said valves having an outlet bore in permanent, open communication with said mixing chamber, by means of a passageway through said body member.
Claim 3
Dependent Claim
47 words
The apparatus of claim 1 wherein said mixing means is rotatably mounted within said mixing chamber and is driven by an external drive means connected to said mixing means by a sealed shaft, such that substantially no air is allowed to enter said mixing chamber during mixing.
Claim 4
Dependent Claim
84 words
The apparatus of claim 1 including a third valve mounted on said body member, having an inlet bore and a pressurized source of a solvent fluid connected thereto, said third valve having an outlet bore in permanent, open communication with said mixing chamber, by means of a passageway through said body member, whereby said mixing chamber can be flushed with said solvent fluid without disassembling any portion of said apparatus and without the necessity of temporarily attaching additional lines or equipment to said apparatus.
Claim 5
Dependent Claim
48 words
The apparatus of claim 1 wherein said valves are ball valves in which the ball defines a cylindrical boRe, of substantially the same diameter as said inlet bore and said outlet bore such that the valve provides a generally smooth-walled, continuous path of flow for the reactive component.
Claim 6
Dependent Claim
39 words
The apparatus of claim 4 wherein said valves are operable to have said cylindrical bore oriented axially with said inlet bore and said outlet bore and maintain said orientation as the reactive component is intermittently pumped through said valve.
Claim 7
Dependent Claim
181 words
In a method of mixing a first reactive component and a second reactive component and dispensing the resulting highly viscous polymer mixture, the method including pumping the first reactive component from a first storage container to the mixing gun, pumping the second reactive component from a second storage container to the mixing gun, admitting the first and second reactive components into the mixing gun, mixing the reactive components and dispensing the polymer mixture, the improvement comprising: a. providing a first connecting means such that the first storage container is in open communication with the mixing gun; b. providing a second connecting means such that the second storage container is in open communication with the mixing gun; c. simultaneously actuating the pumping means on the first storage container and the pumping means on the second storage container, thereby forcing the first and second reactive components directly into the mixing gun; and d. simultaneously de-actuating the pumping means on the first storage container and the pumping means on the second storage container when the desired amount of the polymer mixture has been dispensed.
Claim 8
Dependent Claim
181 words
In a method of mixing a first reactive component and a second reactive component and dispensing the resulting highly viscous polymer mixture, the method including pumping the first reactive component from a first storage container to the mixing gun, pumping the second reactive component from a second storage container to the mixing gun, admitting the first and second reactive components into the mixing gun, mixing the reactive components and dispensing the polymer mixture, the improvement comprising: a. providing a first connecting means such that the first storage container is in open communication with the mixing gun; b. providing a second connecting means such that the second storage container is in open communication with the mixing gun; c. simultaneously actuating the pumping means on the first storage container and the pumping means on the second storage container, thereby forcing the first and second reactive components directly into the mixing gun; and d. simultaneously de-actuating the pumping means on the first storage container and the pumping means on the second storage container when the desired amount of the polymer mixture has been dispensed.
Claim 9
Dependent Claim
48 words
The improvement of claim 6 wherein said first connecting means includes a first ball valve and said second connecting means includes a second ball valve, each of said valves including a ball having a bore of substantially the same diameter as, and aligned axially with the valve bore.
Claim 10
Dependent Claim
122 words
The improvement of claim 7 wherein the mixing gun is connected to a pressurized source of a fluid, in which the polymer mixture is soluble, by a third connecting means including a third valve, in the closed position, said improvement including the additional steps of: e. closing said first ball valve and said second ball valve; f. moving said third valve to the open position, thereby admitting the solvent fluid into the mixing gun under pressure, dissolving substantially all of the polymer mixture remaining in the gun, and expelling the dissolved polymer mixture and solvent from the mixing gun, whereby the gun is clean and ready for subsequent use without disassembling any portion of the mixing gun or connecting temporary lines thereto.
Claim 11
Dependent Claim
181 words
An airless mixing gun especially suited for mixing and dispensing the first and second reactive components of a high viscosity, urethane-based adhesive, said mixing gun consisting essentially of: a. an elongated hollow member having an input end and an output end, said member defining a mixing chamber and terminating in a nozzle at said output end; b. mixing means located within said hollow member and acting in cooperation therewith such that, after the first and second reactive components pass through said hollow member under pressure, the reactive components comprise a generally homogeneous mixture; c. a body member adjacent the input end of said hollow member, adapted to have a plurality of valves mounted thereto; d. a first valve and a second valve mounted on said body member, each of said valves including a valve bore and a ball defining a bore of substantially the same diameter as said valve bore; e. said body member defining a passage interconnecting each of said valves and said mixing chamber such that each of said valves is in permanent, open communication with said mixing chamber.
Claim 12
Dependent Claim
181 words
An airless mixing gun especially suited for mixing and dispensing the first and second reactive components of a high viscosity, urethane-based adhesive, said mixing gun consisting essentially of: a. an elongated hollow member having an input end and an output end, said member defining a mixing chamber and terminating in a nozzle at said output end; b. mixing means located within said hollow member and acting in cooperation therewith such that, after the first and second reactive components pass through said hollow member under pressure, the reactive components comprise a generally homogeneous mixture; c. a body member adjacent the input end of said hollow member, adapted to have a plurality of valves mounted thereto; d. a first valve and a second valve mounted on said body member, each of said valves including a valve bore and a ball defining a bore of substantially the same diameter as said valve bore; e. said body member defining a passage interconnecting each of said valves and said mixing chamber such that each of said valves is in permanent, open communication with said mixing chamber.
Claim 13
Dependent Claim
37 words
The mixing gun of claim 9 including a third valve mounted on said body member, in permanent, open communication with said mixing chamber and adapted to be fixedly connected to a pressurized soUrce of a solvent fluid.
Claim 14
Dependent Claim
160 words
Apparatus for mixing a plurality of reactive components and applying the mixture, said apparatus consisting essentially of: a. an elongated hollow member having an input end and an output end, said member defining a mixing chamber and terminating in a nozzle at said output end; b. mixing means located within said hollow member and acting in cooperation therewith such that, after the reactive components pass through said hollow member under pressure, the reactive components comprise a generally homogeneous mixture; c. a body member fixedly mounted to said input end of said hollow member and adapted to have a plurality of valves mounted thereto; and d. a plurality of valves mounted on said body member, each of said valves having an inlet bore and a pressurized source of one of the reactive components connected thereto and each of said valves having an outlet bore in permanent, open communication with said mixing chamber, by means of a passageway through said body member.
Claim 15
Dependent Claim
160 words
Apparatus for mixing a plurality of reactive components and applying the mixture, said apparatus consisting essentially of: a. an elongated hollow member having an input end and an output end, said member defining a mixing chamber and terminating in a nozzle at said output end; b. mixing means located within said hollow member and acting in cooperation therewith such that, after the reactive components pass through said hollow member under pressure, the reactive components comprise a generally homogeneous mixture; c. a body member fixedly mounted to said input end of said hollow member and adapted to have a plurality of valves mounted thereto; and d. a plurality of valves mounted on said body member, each of said valves having an inlet bore and a pressurized source of one of the reactive components connected thereto and each of said valves having an outlet bore in permanent, open communication with said mixing chamber, by means of a passageway through said body member.
Claim 16
Dependent Claim
84 words
The apparatus of claim 11 including a flush valve mounted on said body member, having an inlet bore and a pressurized source of a solvent fluid connected thereto, said flush valve having an outlet bore in permanent, open communication with said mixing chamber, by means of a passageway through said body member, whereby said mixing chamber can be flushed with said solvent fluid without disassembling any portion of said apparatus and without the necessity of temporarily attaching additional lines or equipment to said apparatus.
Claim 17
Dependent Claim
48 words
The apparatus of claim 11 wherein said valves are ball valves in which the ball defines a cylindrical bore, of substantially the same diameter as said inlet bore and said outlet bore such that the valve provides a generally smooth-walled, continuous path of flow for the reactive component.
Claim 18
Dependent Claim
39 words
The apparatus of claim 11 wherein said valves are operable to have said cylindrical bore oriented axially with said inlet bore and said outlet bore and maintain said orientation as the reactive component is intermittently pumped through said valve.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |