Limited slip differential
US5007886A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 26, 1989 |
| Grant date | Apr 16, 1991 |
| Priority date | — |
| Expiry date | Dec 26, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2048/346
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An improved differential gear mechanism is disclosed of the type including a clutch pack (35) operable to limit differentiating action of a pair of side gears (23,25) relative to a differential case (11). The clutch pack (35) is engaged by a cam means (41) including a pair of cam members (23,43) having engaging cam surfaces (45,47). Initiation of engagement of the clutch pack (35) may occur in response to an external signal (83) by means of a pair of actuation members (53) which engage one of the cam members (43). The actuation members include terminal portions (57) which extend to the exterior of the gear case and engage a cam surface (77;101) of an actuating cam member (71;91). The actuating cam member has an outer peripheral retarding surface (79) which may be engaged by a plunger (85;113) of an electromagnetic actuator (81;107) in response to the external signal (83). Engagement of the retarding surface (79) by the plunger causes ramping of the terminal portions (57) on the cam surface, and resulting axial movement of the actuation members (53), thus initiating ramping of the cam (41) and engagement of the clutch pack (35), with relatively little axial force involved, and utili…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.