Movable appliance assembly and gas cut-off valve

Claim 2

An extendible gas service connector for connecting a gasoperated appliance with a gas main pipeline, said appliance being supported by roller means for rendering the appliance freely movable, said extendible gas service connector including: a pair of rigid pipelines; a first freely rotatable (rotatable/angular) uiversal coupling at one end of said pipelines said coupling providing for free independent 360* rotation about the longitudinal axis of said coupling; a second freely rotatable universal coupling at one end of the other of said pipelines; a third freely rotatable universal coupling intercoupling the other ends of said pipelines; and restraining means for limiting movement of said extendible gas service connector in three dimensions.

Claim 3

An extendible gas service connector in accordance with claim 1 wherein each said freely rotatable universal coupling includes; a first tubular member having a spherical-shaped surface at one end thereof; a socket member having a spherically-shaped surface coaxially positioned with respect to said first member; a second tubular member axially disposed with respect to said first member and said socket member; a compression spring interposed between said first member and said second member and in axial alignment therewith for biasing the surface of said first member against the surface of said socket member; a spacer member of said second tubular member abutting said socket member for limiting angulation of said universal coupling from maximum to zero degrees angulation; and a casing holding said first and said second members and said socket member in a coupled relationship for providing for a freely rotatable universal movement.

Claim 4

An extendible gas service connector in accordance with claim 2 wherein said restraining means includes a safety cable for connecting the appliznce with an adjacent wall or floor for limiting the extent to which the appliance may be moved parallel of perpendicular to said adjacent wall; and a spacer member inserted between said first tubular member and said second tubular member of said universal coupling for limiting angulation of said coupling and thereby limiting verticle movement of said appliance.

Claim 5

A rotatable rotational/angular coupling assembly comprising: a first tubular member having a spherical-shaped surface at one end thereof; a socket member having a spherically-shaped surface coaxially positioned with respect to said first member; receiving said spherical shaped surface of said first member; a second tubular member axially disposed with respect to said first tubular member and said socket member, said second tubular member having a spacer member abutting said socket member; a compression spring interposed between said first member and said second member and in axial alignment therewith biasing the spherical-shaped surface of said first member against the surface of said socket member; said spacer member having means for limiting angulation of said coupling from maximum to zero degrees angulation; and a casing holding said first and said second members and said socket member in a coupled relationship for providing for a freely rotatable rotational/angular movement.

Claim 6

A rotatable rotational/angular coupling assembly comprising: a first tubular member having a spherical-shaped surface at one end thereof; a socket member having a spherically-shaped surface coaxially positioned with respect to said first member; receiving said spherical shaped surface of said first member; a second tubular member axially disposed with respect to said first tubular member and said socket member, said second tubular member having a spacer member abutting said socket member; a compression spring interposed between said first member and said second member and in axial alignment therewith biasing the spherical-shaped surface of said first member against the surface of said socket member; said spacer member having means for limiting angulation of said coupling from maximum to zero degrees angulation; and a casing holding said first and said second members and said socket member in a coupled relationship for providing for a freely rotatable rotational/angular movement.

Claim 7

An extendible gas service connector for connecting a gas-operated appliance with a gas main pipe line, said appliance being supported by roller means for rendering the appliance freely movable, said extendible gas service connector including: a gas intake pipe to said appliance; a first freely rotable rotational/angular coupling connected to said intake pIpe, said coupling providing for free independent 360* rotation about the longitudinal axis of said coupling; a first L fitting connected to said first coupling; a first pipeline section of straight pipe having a suitable predetermined length, said first pipeline section being connected to said first L fitting; a second L fitting, said second L fitting being connected to said first pipeline section; a second freely rotable rotational/angular coupling, said second rotable coupling being connected to said second L fitting; a third L fitting connected to said second coupling; a second pipeline section of straight pipe having a suitable predetermined length, said second pipeline section having one end connected to said third L fitting; a fourth L fitting, said fourth L fitting being connected to the other end of said second pipeline section; a third freely rotable rotational/angular coupling, said third rotable coupling being connected to said fourth L fitting; a gas cut-off valve, said cut-off valve automatically operating to cut off gas flow through said extendible gas service connector when the ambient temperature rises above a certain predetermined amount, said gas cut-off valve being connected to said third freely rotable coupling; a manually operable gas cut-off valve, said manually operable gas cut-off valve being connected to said automatically operated gas cut-off valve; a gas pipeline for connecting said manually operable gas cut-off valve with a gas main pipeline; and restraining means for limiting movement of said extendible gas service connector in three dimensions.

Claim 8

An extendible gas service connector for connecting a gas-operated appliance with a gas main pipe line, said appliance being supported by roller means for rendering the appliance freely movable, said extendible gas service connector including: a gas intake pipe to said appliance; a first freely rotable rotational/angular coupling connected to said intake pIpe, said coupling providing for free independent 360* rotation about the longitudinal axis of said coupling; a first L fitting connected to said first coupling; a first pipeline section of straight pipe having a suitable predetermined length, said first pipeline section being connected to said first L fitting; a second L fitting, said second L fitting being connected to said first pipeline section; a second freely rotable rotational/angular coupling, said second rotable coupling being connected to said second L fitting; a third L fitting connected to said second coupling; a second pipeline section of straight pipe having a suitable predetermined length, said second pipeline section having one end connected to said third L fitting; a fourth L fitting, said fourth L fitting being connected to the other end of said second pipeline section; a third freely rotable rotational/angular coupling, said third rotable coupling being connected to said fourth L fitting; a gas cut-off valve, said cut-off valve automatically operating to cut off gas flow through said extendible gas service connector when the ambient temperature rises above a certain predetermined amount, said gas cut-off valve being connected to said third freely rotable coupling; a manually operable gas cut-off valve, said manually operable gas cut-off valve being connected to said automatically operated gas cut-off valve; a gas pipeline for connecting said manually operable gas cut-off valve with a gas main pipeline; and restraining means for limiting movement of said extendible gas service connector in three dimensions.