Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
February 12, 2008
Patent Application Number
10534060
Date Filed
November 7, 2003
Patent Citations Received
Patent Primary Examiner
Patent abstract
An indirect heater assembly (10) comprises a radiant tube heater (12) and a fan (14) for generating an air flow over the heater (12). In an preferred embodiment and in another aspect, the radiant tube heater (12) comprises a radiant tube burner, an elongate tube 16 and a spiral tube (23) connected to the elongate tube (16) by a U-shaped tube (25). The spiral tube (23) extends around the elongate tube (16) coaxially thereof.
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