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Reversed, double-helical bellows seal

  • US 6,614,508 B2
  • Filed: 08/16/2001
  • Issued: 09/02/2003
  • Est. Priority Date: 08/16/2001
  • Status: Expired due to Fees
First Claim
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1. A flexible double bellows seal comprising:

  • a plurality of rings including first and second end rings and a middle ring;

    a first bellows formed from a flexible material, the first bellows being sealingly connected between the first end ring and the middle ring, the first bellows having a twist bias in a first rotational direction relative to an axis of the rings; and

    a second bellows formed from a flexible material, the second bellows being sealingly connected between the second end ring and the middle ring, the second bellows having a twist bias in a second rotational direction relative to an axis of the rings that is opposite that of the first rotational direction.

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