JPS5559630A - Helical coil heater and manufacturing method thereof - Google Patents
Helical coil heater and manufacturing method thereofInfo
- Publication number
- JPS5559630A JPS5559630A JP13222778A JP13222778A JPS5559630A JP S5559630 A JPS5559630 A JP S5559630A JP 13222778 A JP13222778 A JP 13222778A JP 13222778 A JP13222778 A JP 13222778A JP S5559630 A JPS5559630 A JP S5559630A
- Authority
- JP
- Japan
- Prior art keywords
- pitch
- heater wire
- nodular
- strand
- manufacturing
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Landscapes
- Resistance Heating (AREA)
- Solid Thermionic Cathode (AREA)
Abstract
PURPOSE: To continuously and automatically produce a laterally symmetric products having uniform characteristic by symmetrically cutting a heater wire with respect to a nodular part formed on the heater wire.
CONSTITUTION: A heater wire 35 is formed by helically winding a strand of tungsten or the like on a core 35a of molybdenum or the like. A nodulare part (D), where the strand 35b is more densely wound, is formed intermediately in a pitch part (C). Pitch parts (C') and (C") are formed between the nodular part (D) and a pitch part (B). The nodular part (D) is formed at a fixed interval along the longitudinal direction of the heater wire 35 with a fixed positional relationship between the pitched parts (A), (B), (C') and (C"). The diameter of the nodular part (D) is slightly larger than that of the pitch part (C') and (C") as the strand 35b is more densely wound. The pitch errors are not accumulated so that accurate dimension is obtained and the yield and quality of the products and productivity are improved.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13222778A JPS5559630A (en) | 1978-10-27 | 1978-10-27 | Helical coil heater and manufacturing method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13222778A JPS5559630A (en) | 1978-10-27 | 1978-10-27 | Helical coil heater and manufacturing method thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5559630A true JPS5559630A (en) | 1980-05-06 |
Family
ID=15076345
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13222778A Pending JPS5559630A (en) | 1978-10-27 | 1978-10-27 | Helical coil heater and manufacturing method thereof |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5559630A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6176666U (en) * | 1984-10-25 | 1986-05-23 |
-
1978
- 1978-10-27 JP JP13222778A patent/JPS5559630A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6176666U (en) * | 1984-10-25 | 1986-05-23 | ||
JPH0514445Y2 (en) * | 1984-10-25 | 1993-04-16 |
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