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Paint brush construction

  • US 3,193,863 A
  • Filed: 09/05/1963
  • Issued: 07/13/1965
  • Est. Priority Date: 09/05/1963
  • Status: Expired due to Term
First Claim
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1. A PAINT BRUSH OF THE TYPE HAVING REPLACEABLE BRISTLES COMPRISING AN ELONGATED HANDLE MEMBER, AN INTEGRAL PORTION OF REDUCED CROSS SECTION EXTENDING LONGITUDINALLY FROM ONE END OF SAID HANDLE MEMBER AND TERMINATING IN A FREE END, SAID FREE END HAVING CIRCUMFERENTIALLY ENLARGED ENGAGING MEANS INTEGRALLY FORMED THEREWITH, AN EXTERNAL THREAD FORMATION LOCATED ADJACENT SAID ONE END, A BRISTLE KNOT INCLUDING A BODY OF BRISTLES ADHESIVELY BOUND TOGETHER AT THEIR BUTT ENDS IN A HARDENED MASS OF SYNTHETIC PLASTIC RESIN, SAID MASS HAVING LATERALLY ENGAGEABLE RECEIVING MEANS INTEGRALLY FORMED THEREIN ROTATABLY INTERLOCKED WITH SAID ENGAGING MEANS, SAID INTERLOCK PREVENTING RELATIVE LONGITUDINAL DISPLACEMENT OF SAID HANDLE AND BRISTLE KNOT, A ONE PIECE FERRULE HAVING AN INTERNALLY THREADED CYLINDRICAL PORTION AND A FLATTENED TUBULAR PORTION OF REDUCED CROSS SECTION EXTENDING LONGITUDINALLY FROM SAID CYLINDRICAL PORTION, SAID ONE END OF SAID HANDLE MEMBER THREADEDLY ENGAGED WITHIN SAID CYLINDRICAL FERRULE PORTION WITH SAID RESIN MASS SLIDEABLY AND NONROTATABLY ENGAGED WITHIN SAID FLATTENED TUBULAR FERRULE PORTION SO THAT RELATIVE ROTATION BETWEEN SAID HANDLE AND FERRULE CAUSES SAID BRISTLES TO BE PROPELLED OR RETRACTED RELATIVE TO SAID FERRULE.

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