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Sealed rotary joint for turret rotator

  • US 20060033288A1
  • Filed: 08/10/2004
  • Published: 02/16/2006
  • Est. Priority Date: 08/10/2004
  • Status: Active Grant
First Claim
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1. A rotary joint for operating in an environment of potentially harmful elements comprising:

  • a fixed element having an internal cavity formed therein and wherein one or more elements housed within the internal cavity may be damaged by said potentially harmful elements;

    a rotatable element supported for rotation with respect to said fixed element;

    an annular clearance gap formed between opposing surfaces of the fixed element and the rotatable element, said annular clearance gap extending from said environment of potentially harmful elements to said internal cavity;

    a labyrinth seal formed between said opposing surfaces of the fixed element and the rotatable element, said labyrinth seal comprising at least one leg of the clearance gap formed to resist infiltration of said potentially harmful elements; and

    , a wiper seal positioned in the clearance gap for closing the clearance gap, said wiper seal comprising a fixed annular seal surface, attached to said fixed element, and an annular flexible seal element, attached to the rotatable element, said annular flexible seal element being forced into contact with said fixed annular seal surface by a bending force generated by an interference contact between the annular flexible seal element and the fixed annular seal surface.

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