MY100793A - Thermoplastic fitting electric heat welding method and apparatus. - Google Patents

Thermoplastic fitting electric heat welding method and apparatus.

Info

Publication number
MY100793A
MY100793A MYPI87000842A MYPI19870842A MY100793A MY 100793 A MY100793 A MY 100793A MY PI87000842 A MYPI87000842 A MY PI87000842A MY PI19870842 A MYPI19870842 A MY PI19870842A MY 100793 A MY100793 A MY 100793A
Authority
MY
Malaysia
Prior art keywords
supplied
electric power
fitting
heating element
heat welding
Prior art date
Application number
MYPI87000842A
Inventor
G Ramsey Russel
Original Assignee
Central Plastics Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US06/823,682 external-priority patent/US4642155A/en
Application filed by Central Plastics Co filed Critical Central Plastics Co
Publication of MY100793A publication Critical patent/MY100793A/en

Links

Landscapes

  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

A METHOD AND APPARATUS FOR ELECTRICALLY HEAT WELDING A THERMOPLASTIC FITTING (10) HAVING AN ELECTRIC RESISTANCE ELEMENT (28) EHEREBY REGULATED QUANTITY OF ELECTRIC POWER IS SUPPLIED TO THE HEATING ELEMENT DURING THE WELDING PROCESS. A CONTROLLED ELECTRIC POWER IS SUPPLIED TO THE HEATING ELEMENT (28) AND THE INITIAL CURRENT FLOWING THROUGH IT IS MEASURED AND COMPARED WITH PREDETERMINED CURRENT LEVELS FOR VARIOUS SIZEA OF FITTING WHEREBY THE SIZE OF THE FITTING AS WELL AS THE TOTAL TIME THE CONTROLLED ELECTRIC POWER SHOULD BE SUPPLIED. THE MAGNITUTED OF THE CURRENT FLOWING OVER THE TIME THE CONTROLLED ELECTRIC POWER IS SUPPLIED IS SENSED AT PREDETERMINED TIME INTERVALS AND COMPARED WITH PREDETERMINED CURRENT LEVELS FOR THE SIZE OF FITTING BEING WELDED. THE ELECTRIC POWER IS SUPPLIED TO THE HEATING ELEMENT IS TERMINATED WHEN IT IS DETERMINED THAT THE WELDING PROCESS IS PROCEEDING ABNORMALLY OR OTHERWISE AT THE END OF THE TOTAL TIME. (FIG. 2)
MYPI87000842A 1985-05-16 1987-06-18 Thermoplastic fitting electric heat welding method and apparatus. MY100793A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US73483885A 1985-05-16 1985-05-16
US06/823,682 US4642155A (en) 1985-05-16 1986-01-29 Thermoplastic fitting electric heat welding method and apparatus

Publications (1)

Publication Number Publication Date
MY100793A true MY100793A (en) 1991-02-28

Family

ID=79601450

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI87000842A MY100793A (en) 1985-05-16 1987-06-18 Thermoplastic fitting electric heat welding method and apparatus.

Country Status (1)

Country Link
MY (1) MY100793A (en)

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