Door opening tool

Details Door opening tool Door opening tool

1995-01-25

1996-07-30

Meislin, D. S.

Tools

For lock or latch

B25B 3300

Patent

active

055401210

ABSTRACT:
A tool for use in opening a locked door from its outer side by means of a rotatable doorknob on the inner side of the door is provided. The tool comprises an arm having a cup rotatably carried thereby and a handle manipulable from the outer side of the door. The cup is collapsible to permit it to pass with the arm under the door, but is normally expanded to a shape enabling it to fit over the doorknob. When the cup is passed with the arm beneath the door, the arm and the cup may be rotated by the handle to a position in which the open side of the cup is opposite the doorknob and then drawn back by the handle toward the inner side of the door to permit the cup to fit over the doorknob. Means are attached to the cup that is operable from the outer side of the door to cause the cup to grip and then rotate the doorknob to permit the door to be opened.

REFERENCES:
patent: 4876927 (1989-10-01), Mullen
Phillips, Bill, Professional Locksmithing Techniques, 1991, Chapter 10, pp. 123-132.
Keedex, Lever Opening Tool, as referenced in the Acme Wholesale Distributors, Inc. catalog, 1992, p. 205.

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