Method and apparatus for mounting a push/pull handle on a latch

  • US 5,730,478 A
  • Filed: 07/11/1996
  • Issued: 03/24/1998
  • Est. Priority Date: 07/11/1996
  • Status: Expired due to Term
First Claim
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1. An adapter plate for mounting a push/pull handle type door lock assembly on a door having one of several differing lock mortises positioned thereon, wherein said lock mortise is retained between a first and a second side surface of a door, said lock mortise including a central hole therethrough for mounting a mortise operating key therein, and a pair of apertures on opposite sides of said central hole at predetermined radial distances therefrom and predetermined arcuate positions therearound,said adapter plate comprising in combination:

  • a generally planar plate body having a central opening aligned with a central hole in a lock mortise,said plate body having four pairs of apertures extending transversely therethrough, including a pair of apertures positioned along each of a first set of lines running horizontally, respectively, and vertically, respectively, across said central opening, and a pair of apertures positioned along each of a second set of perpendicular lines passing across said central opening, said second set of lines being oriented 45 degrees arcuately from said first set of lines,said pair of apertures extending through said lock mortise being alignable with at least one respective pair of said plurality of pairs of apertures through said plate body, a pair of connector means for extending through respective ones of said apertures through said plate body and respective ones of said pair of apertures through said lock mortise for retaining same together, and mounting means on said plate body for mounting a push/pull handle type door lock assembly thereon.

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