Rail switch heater
US11725347B2 · kind B2 · utility
1Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2020 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Jul 8, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A30/30
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An embodiment of a rail switch heating system is disclosed, including a controller comprising a processor and memory, an electrically resistive heating element coupled to the controller, the heating element configured for mounting to and heating a railroad rail, and software stored on the memory for executing the steps of: (a) automatically determining a pulse width modulated (PWM) cycle corresponding to a target energy consumption for cycling the heating element on and off; and (b) cycling the heating element on and off according to the PWM cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.