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CLUTCH APPARATUS FOR AUTOMATIC TRANSMISSION

  • US 20120073931A1
  • Filed: 11/12/2010
  • Published: 03/29/2012
  • Est. Priority Date: 09/29/2010
  • Status: Abandoned Application
First Claim
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1. A clutch apparatus for an automatic transmission, comprising:

  • an operational hydraulic pressure supply hole formed in a retainer for connection with an operational hydraulic chamber formed between the retainer and a clutch piston; and

    a sealing member disposed in a sealing groove formed in the clutch piston, making a gap between the retainer and the sealing member when operation oil is not supplied to the operational hydraulic chamber of a clutch, and making the sealing groove and retainer in close contact when the operation oil is supplied to the operational hydraulic chamber of the clutch such that the operational hydraulic chamber is hermetically sealed.

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