US4902539A — Fuel-oxidant mixture for detonation gun flame-pla…

Claim 1

Independent Claim 65 words

In a process of flame plating with a detonation gun, the improvement wherein a gaseous fuel-oxidant mixture is used which comprises: (a) an oxidant and (b) a fuel mixture of at least two combustible gases selected from the group of saturated and unsaturated hydrocarbons and wherein the combustion temperature of the fuel mixture is lower than the combustion temperature of one of the combustible gases.

Claim 2

Dependent Claim 65 words

In a process of flame plating with a detonation gun, the improvement wherein a gaseous fuel-oxidant mixture is used which comprises: (a) an oxidant and (b) a fuel mixture of at least two combustible gases selected from the group of saturated and unsaturated hydrocarbons and wherein the combustion temperature of the fuel mixture is lower than the combustion temperature of one of the combustible gases.

Claim 3

Dependent Claim 38 words

The process of claim 1 wherein said fuel mixture comprises a mixture of acetylene and a second combustible gas selected from the group consisting of propylene, methane, ethylene, methyl acetylene, propane, pentane, a butadiene, a butalene, a butane,

Claim 4

Dependent Claim 21 words

The process of claim 2 wherein said oxidant is selected from the group consisting of oxygen, nitrous oxide and mixtures thereof.

Claim 5

Dependent Claim 23 words

The process of claim 3 wherein said mixture has an atomic ratio of oxygen to carbon of from about 0.9 to about 2.0.

Claim 6

Dependent Claim 37 words

The process of claim 4 wherein said second combustible gas is selected from the group consisting of propylene, propane and a butylene and the atomic ratio of oxygen to carbon is from about 0.95 to about 1.6.

Claim 7

Dependent Claim 14 words

The process of claim 5 wherein the second combustible gas consists essentially of propylene.

Claim 8

Dependent Claim 44 words

The process of claim 1 wherein the mixture contains from about 35 to 80 percent by volume of the oxidant, from about 2 to 50 percent by volume of acetylene, and from about 2 to 60 percent by volume of the second combustible gas.

Claim 9

Dependent Claim 44 words

The process of claim 7 wherein the mixture contains from about 45 to about 75 percent by volume oxygen, from about 2 to about 45 percent by volume acetylene and from about 5 to about 45 percent by volume of the second combustible gas.

Claim 10

Dependent Claim 44 words

The process of claim 8 wherein the mixture contains from about 50 to about 70 percent by volume oxygen, from about 3 to about 40 percent by volume acetylene and from about 8 to about 38 percent by volume of the second combustible gas.

Claim 11

Dependent Claim 14 words

The process of claim 9 wherein said second combustible gas consists essentially of propylene.

Claim 12

Dependent Claim 16 words

The process of claim 1, 2, 3 or 4 wherein said mixture contains a diluting gas.

Claim 13

Dependent Claim 25 words

The process of claim 11 wherein the diluting gas is selected from the group consisting of argon, neon, krypton, hydrogen, ammonia, xenon, helium and nitrogen.

Claim 14

Dependent Claim 11 words

The process of claim 12 wherein the diluting gas is nitrogen.

Claim 15

Dependent Claim 111 words

In the process of flame plating with a detonation gun which comprises the step of introducing desired fuel and oxidant gases into the gun to form a detonatable mixture, introducing a powdered coating material into said detonatable mixture within the gun, and detonating the fuel-oxidant mixture to impinge the coating material onto an article to be coated, the improvement which comprises using a detonatable fuel-oxidant mixture of (a) an oxidant and (b) a fuel mixture of at least two combustible gases selected from the group of saturated and unsaturated hydrocarbons and wherein the combustion temperature of the fuel mixture is lower than the combustion temperature of one of the combustible gases.

Claim 16

Dependent Claim 111 words

In the process of flame plating with a detonation gun which comprises the step of introducing desired fuel and oxidant gases into the gun to form a detonatable mixture, introducing a powdered coating material into said detonatable mixture within the gun, and detonating the fuel-oxidant mixture to impinge the coating material onto an article to be coated, the improvement which comprises using a detonatable fuel-oxidant mixture of (a) an oxidant and (b) a fuel mixture of at least two combustible gases selected from the group of saturated and unsaturated hydrocarbons and wherein the combustion temperature of the fuel mixture is lower than the combustion temperature of one of the combustible gases.

Claim 17

Dependent Claim 64 words

The process of claim 14 wherein said oxidant is selected from the group consisting of oxygen, nitrous oxide and mixtures thereof and wherein said fuel mixture comprises a mixture of acetylene and a second combustible gas selected from the group consisting of propylene, methane, ethylene, methyl acetylene, propane, pentane, a butadiene, a butylene, a butane, ethylene oxide, ethane, cyclopropane, propadiene, cyclobutane and mixtures thereof.

Claim 18

Dependent Claim 13 words

The process of claim 15 wherein said mixture contains an inert diluting gas.

Claim 19

Dependent Claim 23 words

The process of claim 14 wherein said mixture has an atomic ratio of oxygen to carbon of from about 0.9 to about 2.0.

Claim 20

Dependent Claim 36 words

The process of claim 17 wherein said second combustible gas is selected from the group consisting of propylene, propane and butylene and the atomic ratio of oxygen to carbon is from about 0.95 to about 1.6.

Claim 21

Dependent Claim 14 words

The process of claim 18 wherein the second combustible gas consists essentially of propylene.

Claim 22

Dependent Claim 47 words

The process of claim 15 wherein the mixture contains from about 45 to about 70 percent by volume of the oxidant, from about 7 to about 45 percent by volume of acetylene, and from about 10 to about 45 percent by volume of the second combustible gas.

Claim 23

Dependent Claim 41 words

The process of claim 19 wherein the mixture contains from about 50 to about 65 percent by volume oxygen, from about 12 to about 26 percent by volume acetylene and from about 18 to about 30 percent by volume of propylene.

Claim 24

Dependent Claim 117 words

In the process for operating a detonation gun having a mixing and ignition chamber and a barrel portion which comprises introducing desired fuel and oxidant gases into said gun through said mixing and ignition chamber, introducing a comminuted coating material into said barrel portion, and detonating the mixture within said gun to impinge the coating material onto an article to be coated, the improvement which comprises using a detonatable fuel-oxidant mixture of (a) an oxidant and (b) a fuel mixture of at least two combustible gases selected from the group of saturated and unsaturated hydrocarbon gases and wherein the combustion temperature of the fuel mixture is lower than the combustion temperature of one of the combustible gases.

Claim 25

Dependent Claim 117 words

In the process for operating a detonation gun having a mixing and ignition chamber and a barrel portion which comprises introducing desired fuel and oxidant gases into said gun through said mixing and ignition chamber, introducing a comminuted coating material into said barrel portion, and detonating the mixture within said gun to impinge the coating material onto an article to be coated, the improvement which comprises using a detonatable fuel-oxidant mixture of (a) an oxidant and (b) a fuel mixture of at least two combustible gases selected from the group of saturated and unsaturated hydrocarbon gases and wherein the combustion temperature of the fuel mixture is lower than the combustion temperature of one of the combustible gases.

Claim 26

Dependent Claim 64 words

The process of claim 21 wherein said oxidant is selected from the group consisting of oxygen, nitrous oxide and mixtures thereof, and wherein said fuel mixture comprises a mixture of acetylene and a second combustible gas selected from the group consisting of propylene, methane, ethylene, methyl acetylene, propane, pentane, a butadiene, a butylene, a butane, ethylene oxide, ethane, cyclopropane, propadiene, cyclobutane and mixtures thereof.

Claim 27

Dependent Claim 13 words

The process of claim 23 wherein said mixture contains an inert diluting gas.

Claim 28

Dependent Claim 22 words

The process of claim 23 wherein said mixture has an atomic ratio of oxygen to carbon from about 0.9 to about 2.0.

Claim 29

Dependent Claim 36 words

The process of claim 25 wherein said second combustible gas is selected from the group consisting of propane, propylene and butylene and the atomic ratio of oxygen to carbon is from about 0.95 to about 1.6.

Claim 30

Dependent Claim 14 words

The process of claim 26 wherein the second combustible gas consists essentially of propylene.

Claim 31

Dependent Claim 47 words

The process of claim 27 wherein the mixture contains from about 45 to about 70 percent by volume of the oxidant, from about 7 to about 45 percent by volume of acetylene, and from about 10 to about 45 percent by volume of the second combustible gas.

Claim 32

Dependent Claim 41 words

The process of claim 27 wherein the mixture contains from about 50 to about 65 percent by volume oxygen, from about 12 to about 26 percent by volume acetylene and from about 18 to about 30 percent by volume of propylene.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1993-02-19	1993-08-21	1994-02-20	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1997-02-19	1997-08-21	1998-02-20	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2001-02-19	2001-08-21	2002-02-20	$7700.00	Window Closed / Lapsed

Fuel-oxidant mixture for detonation gun flame-plating

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