Gas fireplace unit

Claim 2

A gas unit comprising a grill, a burner pipe mounted to the grill, a plurality of jets mounted in the burner pipe, each having an orifice through which gas from the pipe flows, means for supplying a regulated amount of gas to the burner pipe to control the pressure in the pipe within prescribed limits, the jet orifices and the pressure in the burner pipe being such as to produce a clean yellow flame from the jets, and an imitation combustible substance positioned over the burner pipe and in relationship to the jets such that the flames do not impinge on the substance.

Claim 3

The unit of claim 1 wherein the imitation substance is at least one imitation log.

Claim 4

The unit of claim 1 wherein the regulated gas supply means controls the pressure in the pipe within a range, and the sizes of the jet orifices are such, so as to produce flames from the jets of temperatures between 1200 and 1400 degrees Fahrenheit.

Claim 5

The unit of claim 1 wherein the gas is natural gas and the regulated gas supply means controls the pressure in the burner pipe to between approximately 0.05 to 0.75 IWG.

Claim 6

The unit of claim 4 wherein the regulated gas supply means controls the pressure in the burner pipe to between approximately 0.35 to 0.50 IWG.

Claim 7

The unit of claim 1 wherein the gas is liquid petroleum gas and the regulated gas supply means controls the pressure in the burner pipe to between approximately 0.1 to 13 IWG.

Claim 8

The unit of claim 6 wherein the regulated gas supply means controls the pressure in the burner pipe to between approximately 3 to 4 IWG.

Claim 9

The unit of claim 2 wherein there are a plurality of logs, at least one of the logs being positioned in front of and generally parallel to the burner pipe, and at least one other log being positioned over the burner pipe.

Claim 10

The unit of claim 8 wherein some of the jets are located outside the edges of the upper log and produce sub-stantially vertical flames, and other jets are positioned under the upper log with their tips spaced from the bottom side of the upper log and produce generally horizontal flames directed substantially parallel to the burner pipe, whereby none of the flames impinge on any of the logs.

Claim 11

The unit of claim 9 wherein still other jets are located under the upper log with their tips spaced from the bottOm side of the upper log, the last-named jets producing substantially vertical flames of heights so as not to impinge on the upper log.

Claim 12

The unit of claim 1 wherein the jets are spaced such that the igniting of one jet transfers the flame to ignite the remaining jets.

Claim 13

The unit of claim 1 wherein the orifices in some of the jets are sized to produce flames of different heights.

Claim 14

A gas log unit comprising a grill, a burner pipe mounted to the grill, a plurality of jets mounted in the burner pipe, each jet having a smooth orifice through which the gas from the pipe flows, means for supplying a regulated amount of gas to the burner pipe to control the pressure in the pipe within prescribed limits, the jet orifices and pressure in the burner pipe being such as to produce flames from the jets at a temperature between approximately 1200 and 1400 degrees Fahren-heit, a plurality of imitation gas logs, at least one of the logs being positioned on the grill in front of and generally parallel to the burner pipe, and at least another of the logs being positioned over the burner pipe, the jets being spaced on the burner pipe such that some are located outside the edges of the upper log and some are located under the upper log with their tips spaced from the bottom side of the upper log, the outer jets producing substantially vertical flames some of which rise past the sides of the upper log but which do not impinge thereon, some of the inner jets producing generally horizontal flames substantially parallel to the burner pipe so as not to impinge on the logs, the jets being spaced such that igniting one jet transfers the flame to ignite the remaining jets.

Claim 15

A gas log unit comprising a grill, a burner pipe mounted to the grill, a plurality of jets mounted in the burner pipe, each jet having a smooth orifice through which the gas from the pipe flows, means for supplying a regulated amount of gas to the burner pipe to control the pressure in the pipe within prescribed limits, the jet orifices and pressure in the burner pipe being such as to produce flames from the jets at a temperature between approximately 1200 and 1400 degrees Fahren-heit, a plurality of imitation gas logs, at least one of the logs being positioned on the grill in front of and generally parallel to the burner pipe, and at least another of the logs being positioned over the burner pipe, the jets being spaced on the burner pipe such that some are located outside the edges of the upper log and some are located under the upper log with their tips spaced from the bottom side of the upper log, the outer jets producing substantially vertical flames some of which rise past the sides of the upper log but which do not impinge thereon, some of the inner jets producing generally horizontal flames substantially parallel to the burner pipe so as not to impinge on the logs, the jets being spaced such that igniting one jet transfers the flame to ignite the remaining jets.

Claim 16

The gas log unit of claim 13 wherein the outer jets have slotted tips for producing fan-shaped flames.

Claim 17

The gas log unit of claim 13 wherein the orifices in the outer jets are sized to produce flames of different heights.

Claim 18

The gas log unit of claim 13 wherein others of the inner jets produce substantially vertical flames of heights so as not to impinge on the upper log.

Claim 19

A gas unit comprising a grill, a burner pipe mounted to the grill, a plurality of jets mounted in the burner pipe each having an orifice through which gas from the pipe flows, means for supplying a regulated amount of gas to the burner pipe to control the pressure in the pipe within prescribed limits, and at least one log positioned over the burner pipe and in relation to the jets such that the flames do not impinge on the log.

Claim 20

A gas unit comprising a grill, a burner pipe mounted to the grill, a plurality of jets mounted in the burner pipe each having an orifice through which gas from the pipe flows, means for supplying a regulated amount of gas to the burner pipe to control the pressure in the pipe within prescribed limits, and at least one log positioned over the burner pipe and in relation to the jets such that the flames do not impinge on the log.

Claim 21

The unit of claim 17 wherein some of the jets are located outside the edges of the log and produce substantially vertical flames, and other jets are positioned under the log with their tips spaced from the bottom side of the log and produce generally horizontal flames directed substantially parallel to the burner pipe, whereby none of the flames impinge on the log.

Claim 22

The unit of claim 18 wherein still other jets are located under the log with their tips spaced from the bottom side of thelog, the last-named jets producing substantially vertical flames of heights so as not to impinge on the log.