US 5,313,794 A · Fluid coupling

Abstract

A fluid coupling has capacity coefficients in forward and reverse driving which can be arbitrarily selected to comply with demand for a wide variety of characteristics in accordance with the intended application. Pump blades Bp and/or turbine blades Bt are inclined in the direction of rotation of pump impeller P and a turbine runner T with inclination angles .theta..sub.2p and .theta..sub.2t with respect to normal lines Lp and Lt of the pump and turbine, respectively. Transfer of working fluid between the pump impeller P and the turbine runner T is thereby smoothened or suppressed in accordance with the inclination angles .theta..sub.2p and .theta..sub.2t, and thus the capacity coefficients in both forward and reverse driving can be arbitrarily selected and fixed.

Claims1

Dependent claims

A fluid coupling without an inner core, comprising:

a pump impeller for connection to an output shaft of a vehicle engine, said pump impeller having a plurality of pump blades;
a turbine runner for connection to a vehicle transmission to establish a fluid coupling in cooperation with said pump impeller, said turbine runner having a plurality of turbine blades, said apparatus having no inner core for guiding flow of fluid between said pump impeller and said turbine runner;
and
said blades of at least one of said pump impeller and said turbine runner being inclined at a negative angle .theta.- of approximately 30.degree., in the direction of forward rotation, with respect to radial lines of said pump impeller and said turbine rubber.

1 more element

Dependencies are inferred from the claim text.

Fluid coupling

Life of this patent

Fluid coupling

Life of this patent

Abstract

Claims1