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Door knob

  • US 4,981,314 A
  • Filed: 02/06/1989
  • Issued: 01/01/1991
  • Est. Priority Date: 02/06/1989
  • Status: Expired due to Term
First Claim
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1. A door knob, comprising:

  • a knob portion having a hollow interior and a front face;

    an aperture formed through said front face of said knob portion and communicating with said hollow interior;

    a representation of a human eye received for limited reciprocal axial movement through said aperture into said hollow interior;

    a shank portion connected to said knob portion;

    said shank portion having an elongated recess communicating with said hollow interior;

    means for securing said shank portion to a shaft of a conventional door latch mechanism;

    a bellows in said hollow interior of said knob portion, said bellows having an air outlet orifice configured to produce sound upon contraction of said bellows, said air outlet orifice disposed in alignment with said elongated recess in said shank for directing sound waves through said shank into a room interior;

    an inner face of said human eye representation secured to one end of said bellows;

    said bellows formed from a resilient material and axially outwardly biasing said human eye representation through said aperture in said knob portion; and

    a radially extending retaining flange formed on an inner face of said human eye representation for retaining said human eye representation partially within said knob portion.

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