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
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)
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) |
-
1987
- 1987-06-18 MY MYPI87000842A patent/MY100793A/en unknown
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