Title: Method of making preinsulated pipe assembly

Abstract: A preinsulated pipe assembly and pipeline formed from a plurality of such assemblies. Each pipe assembly includes a pipe with a heater housing mounted thereon to form a cavity along the exterior of the pipe and a preformed insulation layer for insulating the pipe and the heater housing. A connecting assembly is used to join the pipe assemblies and form a pipeline. Pull means detachably connected to a heating element facilitates placement of the heating element in the heater housing cavities, and a pulling assembly attached to the heater element permits removal of the heater element after installation of the pipeline.

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Inventors: Johnson, Jr., Ben C. (San Marcos, TX, US)

Application Number: 640637
Filing Date: 1975-12-15
Publication_date: 1977-06-28
Assignee: Thermon Manufacturing Company ()
Primary Class(es): 29/611 29/433, 29/460, 285/55, 392/480
Other Classes:
US Patent Ref:

2786264	Mar, 1957	Colombo	29/460.
3079673	Mar, 1963	Loehlein et al.	29/611.
3374535	Mar, 1968	Tranel	29/611.
3453716	Jul, 1969	Cook	29/460.
3665598	May, 1972	Brieko	29/611.
3706872	Dec, 1972	Trabilcy	219/301.
3718804	Feb, 1973	Ando	137/141.
3755650	Aug, 1973	Ando	219/300.
3784785	Jan, 1974	Noland	219/301.
3834458	Sep, 1974	Bilbro et al.	219/301.

Other Refs:
Primary Examiner: Moon, Charlie T.
Assistant Examiner:
Attorney: Pravel, Wilson & Gambrell