×

Pressure deactivated torque override coolant cap

  • US 20040011788A1
  • Filed: 07/18/2002
  • Published: 01/22/2004
  • Est. Priority Date: 07/18/2002
  • Status: Active Grant
First Claim
Patent Images

1. A cap apparatus adapted to be coupled to a threaded filler neck of a coolant reservoir, the cap comprising a cover;

  • a main body, the main body including threads for engagement with threads of a filler neck; and

    a means for transmitting torque applied to the cover to the main body that enabling the threads of main body to engage the threads of the filler neck, the torque override means limiting the maximum torque that can be transmitted from the cover to the main body;

    a means for preventing torque from being transmitted from the cover to the main body to unscrew the main body from the filler neck while the coolant reservoir is pressurized;

    a means for preventing the coolant pressure from exceeding an upper predetermined level; and

    a means for preventing the coolant pressure from falling below a lower predetermined level.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×