Torque converter having weld free blades

Details Torque converter having weld free blades Torque converter having weld free blades

2008-06-12

2011-10-25

Lazo, Thomas E (Department: 3745)

Power plants

Pressure fluid source and motor

Coaxial impeller and turbine unit

C060S364000

Reexamination Certificate

active

08042330

ABSTRACT:
A torque converter structure having a plurality of high efficiency secure weld free connections between blades and the shells of the pump and turbine that reduces flow between the blades and the shells. At least one blade within the torque converter is securely mechanically attached to the shell of the pump or turbine in the absence of welding by providing a tab on the blade that is bent on a portion that passes through a slit in the shell to secure the blade to the shell and by inserting a major part (greater than 50%) of a portion of an edge of the blade, that runs coextensively with a surface of the shell into a depression in that shell until the edge of the blade diverges from the shell. The invention also includes the unique blade and shell and a method for using them to make a torque converter of the invention.

REFERENCES:
patent: 2660957 (1953-12-01), Koskinen
patent: 3545883 (1970-12-01), Iijima
patent: 3673659 (1972-07-01), Ishii et al.
patent: 3817656 (1974-06-01), Batteux
patent: 4868365 (1989-09-01), Farone et al.
patent: 5522220 (1996-06-01), Locker
patent: 5794436 (1998-08-01), Maeda
patent: 5893704 (1999-04-01), Prater
patent: 6226985 (2001-05-01), Sasse et al.
patent: 6957530 (2005-10-01), Schleicher et al.

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