Patent · US Expired

Alignment tool for mounting door lock assembly

US5081771A · kind A · utility

3Cited by
4References
10Claims
0Family size

Inventors

Key dates

Filing dateMay 24, 1991
Grant dateJan 21, 1992
Priority date
Expiry dateMay 24, 2011

Classification

  • Technology area (CPC E)Fixed Constructions
  • CPC primaryE05B17/06
  • WIPO fieldCivil engineering
  • WIPO sectorOther fields

Abstract

An alignment tool for preparing through holes in a door to enable mounting a lock assembly includes a slidable bracket for securely positioning the tool in the mortise at the edge of the door. An angle element is connected to the bracket and to a support plate, which is perpendicularly disposed relative to the bracket. The support plate is formed with precisely positioned guide holes that indicates to the door installer exactly where the through holes are to be made.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.