03976230 is referenced by 22 patents and cites 6 patents.

A polyurethane foam dispensing system wherein electrical lines in the conduits thereof are used to controllably heat the foam precursor materials and to maintain such material at optimum temperature for foam formation. A thermistor at the dispensing end of such conduits senses the temperature of the throughput material and controls the heating element(s) by feedback therefrom.

Title
System for dispensing polyurethane and the like
Application Number
318167
Publication Number
3976230
Application Date
October 7, 1974
Publication Date
August 24, 1976
Inventor
Charles R Sperry
Wilton
CT, US
Agent
Albert Siegel
Assignee
Instapak Corporation
CT, US
IPC
B67D 5/62
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