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Safety device for a radiator cap

  • US 4,872,584 A
  • Filed: 07/27/1988
  • Issued: 10/10/1989
  • Est. Priority Date: 08/28/1987
  • Status: Expired due to Fees
First Claim
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1. A safety device for a radiator cap detachably mounted on a fluid supply opening having an inner surface of a radiator for sealing the fluid supply opening, comprising:

  • a lock means for preventing the radiator cap from being detached from the fluid supply opening when the temperature of coolant located in said radiator is higher than a predetermined temperature value, said lock means being provided between said radiator cap and said inner surface of said fluid supply opening, said lock means being provided in pairs formed of two individual lock means and each of said individual lock means of said pair being spaced a distance from one another;

    said lock means including a lock portion provided on said inner surface of the fluid supply opening and a lock member having two ends, one of said two ends of said lock member fixedly secured to the radiator cap and the other of said two ends of said lock member extending downwardly from the radiator cap into the fluid supply opening, said lock member being formed of a shape memory alloy.

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