Kysor Industrial Corporation

John H Babb, Jr

Robert A Marotto

Orville C Maurits

A security strike plate assembly comprises a strike plate that is mounted directly on the door framing by rigid bushings and mating screws. Holes are drilled through the door jamb and into the door framing a predetermined distance to form shoulders at the bottoms of the holes. The rigid bushings are closely received in the holes, and extend from the shoulders to the interior surface of the strike plate. The screws extend through mating apertures in the strike plate and the central apertures of the bushings, and into the door framing, such that selected forces applied to the strike plate are transmitted to and resisted by the door.

Security strike assembly

An interconnecting lock assembly having simultaneously actuated, multiple security deadbolts, the central one forming part of the main lock subassembly, and the others being operated from the main lock subassembly through special mechanism.

Lock assembly

A lock of the type enabling panic exit, there being a unique drive arrangement from the inner knob to the latch bolt mechanism and the security dead bolt mechanism. This drive utilizes a vertically reciprocable slide at the inside of the door panel, biased in one direction, and shiftable in the other direction by rotation of the inner knob for retraction of both the latch bolt and the security dead bolt. The drive is not responsive to tampering with the spindle elements, e.g. after forced removal of the outside knob. The lock can be employed on either left or right-hand door arrangements, directly, without requiring handing.

Growing community of inventors

Grand Rapids, MI, United States of America

John H Babb, Jr