Fuel filter assembly with brushless DC pump
US10323640B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2016 |
| Grant date | Jun 18, 2019 |
| Priority date | — |
| Expiry date | May 21, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2240/808
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The disclosed lift pump employs a unique arrangement of conductive studs to transmit the three phases of motor power from the control board to the brushless motor. The conductive studs penetrate the wall of the motor/pump enclosure, which is otherwise non-conductive. The conductive studs are intentionally larger than needed to transmit the current used by the motor, and are arranged in thermal contact with heat conductive portions of the motor control board to transmit heat from the control board into the motor/pump enclosure where heat is transmitted to fuel passing through the assembly. An additional center heat sink is situated in a position aligned with heat generating capacitors that are part of the motor drive circuitry on the motor control board.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.