초록 ▼

A portable forced air heater includes a one-piece unichassis structure which forms the base and the outer housing of the heater. The outer housing defines an elongated passage having a front end and a back end and which receives a burner assembly. The burner assembly is spaced from the outer housing

A portable forced air heater includes a one-piece unichassis structure which forms the base and the outer housing of the heater. The outer housing defines an elongated passage having a front end and a back end and which receives a burner assembly. The burner assembly is spaced from the outer housing such that cooling air flows between the combustion chamber of the burner assembly and the outer housing. The burner assembly itself includes the elongated combustion chamber which is shorter than the air passage defined by the outer shell and includes a rear head member which is snapped into place in the inlet end of the combustion chamber. Self-aligning mounting tabs and brackets are formed in both the unichassis and the combustion chamber to significantly reduce the number of parts and to simplify construction.

대표청구항 ▼

[ What is claimed is:] [1.] A forced air heater comprising:a one-piece unichassis structure having a base and an outer housing formed of a first single sheet of metal, said outer housing defining an elongated passage there through with a front end and a back end; anda burner assembly comprising,an e

[ What is claimed is:] [1.] A forced air heater comprising:a one-piece unichassis structure having a base and an outer housing formed of a first single sheet of metal, said outer housing defining an elongated passage there through with a front end and a back end; anda burner assembly comprising,an elongated combustion chamber defined by outer walls and having an inlet end, an outlet end and a length shorter than said elongated passage, said combustion chamber being located within, and at a selected spacing from said elongated passage to define an air passage around said combustion chamber,a rear head member cooperating with said inlet end and defining a substantially centrally located opening, anda combustion mixture supply member located in said opening of said rear head member for supplying a mixture of fuel and air for combustion in said combustion chamber.