Linkage mechanism providing a virtual pivot axis for hair removal apparatus with pivotal head

  • US 20040128834A1
  • Filed: 10/01/2003
  • Published: 07/08/2004
  • Est. Priority Date: 10/01/2002
  • Status: Active Grant
First Claim
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1. A linkage mechanism for a hair removal appliance having a head (1) carrying at least one hair removal member and mounted for rocking about a virtual axis, said linkage mechanism being mountable on an appliance body (2) and comprising:

  • a pair of spaced support arms (4,5) for pivotable attachment to the head (1) at first and second pivot axes (11,12), said first and second pivot axes being spaced apart by a first distance;

    a first transverse link member (6) pivotably mounted on said body (2) for rotation about a third axis (17) and being pivotably attached to each of said support arms (4,5), at fourth and fifth pivot axes (15,16) spaced apart by a second distance less than the first distance; and

    second and third transverse link members (7,9) pivotably mounted on the body (2) at respective first ends thereof and being pivotably attached at respective second ends thereof to respective ones of said support arms (4,5) at sixth and seventh pivot axes (13,14) spaced apart by a third distance, said first, second, third, fourth, fifth, sixth and seventh axes being mutually parallel.

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