Servo With Increased Release Force
AssigneeSonnax Transmission Company
InventorsTodd V. Mangiagli, Randall R. Schroeder
Life of this patent
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Abstract
Methods of modifying a GM Powerglide low range servo assembly for high line pressure applications as well as replacement components for Powerglide low range servo assemblies and replacement low range servo assemblies.
Claims26
An automotive transmission servo assembly, comprising:
- a servo pin configured to be operably coupled to a clutch band;
- and
- at least one piston for providing a total apply area configured to receive a pressurized apply oil and a total release area configured to receive a pressurized release oil;
- wherein the total release area is greater than the total apply area.
A kit for modifying an automotive transmission servo assembly, comprising:
- a servo pin configured to be operably coupled to a clutch band;
- and
- at least one piston for providing a total apply area configured to receive a pressurized apply oil and a total release area configured to receive a pressurized release oil;
- wherein the total release area is substantially equal to or greater than the total apply area.
A method of modifying a release force of an existing automotive transmission servo assembly having an existing servo pin and an existing piston attached to the existing servo pin, the existing servo assembly having a total apply area that is greater than a total release area, the method comprising:
- providing a replacement servo assembly including a replacement servo pin and a plurality of replacement pistons, wherein a total release area of the replacement servo assembly is greater than a total apply area of the replacement servo assembly;
- and
- replacing the existing servo pin and piston with the replacement servo assembly.
Dependencies are inferred from the claim text.