Torque coupling with control valve
US7241247B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2005 |
| Grant date | Jul 10, 2007 |
| Priority date | — |
| Expiry date | Oct 14, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2071
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic torque-coupling assembly that includes a pressure relief valve with an annular solenoid actuator assembly that moves axially to engage an annular valve actuator ring to selectively close a pressure relief valve disposed on the outer face of a torque-coupling case. The annular solenoid assembly does not include a conventional armature so that the coil portion of the solenoid actuator assembly moves into and out of engagement with the annular valve actuator ring. The valve actuator ring rotates with the torque-coupling case, however, the solenoid assembly does not rotate. The valve actuator ring and solenoid assembly are mounted outside the differential case. A variable amount of electrical current is applied to the solenoid assembly so that the release pressure of the pressure relief valve assembly is selectively based on the magnitude of an electric current supplied to the solenoid assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.