Centrifugally engaged servo clutch for torque converter lock-up
US4140208A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1976 |
| Grant date | Feb 20, 1979 |
| Priority date | — |
| Expiry date | Oct 14, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/141
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A speed-responsive engaging mechanism adapted for use in a hydrodynamic device to couple turbine and impeller members including a disc secured to the turbine member having a series of convexly curved cam surfaces thereon formed in apertures in the discs with a series of friction shoe assemblies mounted in the apertures in engagement with the cam surfaces. The friction shoe assemblies engage with the impeller at a predetermined speed of rotation of the turbine member, and the curved cam surface induces a wedging engagement of the shoes with the impeller member. Spring means are provided to retain the shoe assemblies in the apertures, and a roller mechanism is provided in each shoe assembly to provide relatively frictionless relative movement between the cam surfaces and the shoe assemblies. Each shoe in the assembly is made of a sintered metal material and has a spring retaining structure cast in the shoe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.