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Automatic releasing hinge

  • US 6,711,781 B2
  • Filed: 08/21/2002
  • Issued: 03/30/2004
  • Est. Priority Date: 08/21/2002
  • Status: Expired due to Term
First Claim
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1. An automatic releasing hinge, comprising:

  • a pintle hub having a pair of anchor ridges;

    an elastic element having one end abutting against one end of the pintle hub;

    a first bushing having a pair of turning troughs, a pair of anchor troughs and a pair of release troughs formed therein;

    wherein another end of the pintle hub abuts against a first inner wall of the first bushing when one of the anchor ridges of the pintle is positioned in one of the turning troughs and the anchor troughs;

    wherein said another end of the pintle hub abuts against a second inner wall of the first bushing when one of the anchor ridges of the pintle hub is positioned in the release trough;

    a barrel housing the elastic element and the pintle hub, and the barrel being releasably engaged with the first bushing; and

    the inner wall of the bushing comprising three pairs of opposing humps, and the turning troughs, the anchor troughs and the release troughs are opposingly formed between the humps.

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