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US 2012/0190493 A1Published application
Coupling device
AssigneeToyota Jidosha Kabushiki Kaisha
InventorHideki TAMOTO
Life of this patent
Estimating the term…
Abstract
A coupling device includes a clutch mechanism portion that is provided between a propeller shaft and a drive pinion shaft, and that engages by viscous resistance of hydraulic fluid. This coupling device is able to transmit driving force from a driving source to the drive pinion shaft by the engagement of this clutch mechanism portion. Also, an oil pump is provided that supplies hydraulic fluid not used for engaging the clutch mechanism portion to the clutch mechanism portion when the drive pinion shaft rotates.
Claims12
A coupling device comprising:
- a wet type frictional engagement portion that is provided between a front-wheel side rotating shaft and a rear-wheel side rotating shaft, and that engages by viscous resistance of hydraulic fluid, and transmits driving force from a driving source to the rear-wheel side rotating shaft by this engagement;
- and
- an oil pump that supplies hydraulic fluid not used for engaging the wet type frictional engagement portion to the wet type frictional engagement portion when the rear-wheel side rotating shaft rotates.
Dependencies are inferred from the claim text.