Door Clamp with Rotatable Stops for Rapid Double-Door Locking

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Solution Overview

Problem

Existing door securing systems for double-doors with vertical bars are inadequate for rapid and key-less security, particularly in emergency situations like school lockdowns, as they require keys or time to secure and may not prevent opening from the opposite side.

Innovation Solution

A jamb lock door clamp system with a base, rotatable stops, and biased pins that can be positioned to expose or cover grooves on the base, allowing for quick and secure attachment to double-doors without keys, using a holding pin to lock the doors in place.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If traditional locking mechanisms are used on double-doors, then the doors can be secured, but they require keys and time to secure, which is inadequate for rapid emergency response

Engineering Contradiction:
Improvetime to secure doorsVSAvoidsecurity effectiveness
Core Design Contradiction:
Loss of timeVSReliability

Solution Approach 1:

The door clamp is designed to be self-contained with spring-biased pins that automatically extend to engage with the door bars when the clamp is positioned and released. The spring mechanism provides automatic locking action without requiring keys, tools, or complex manual operations, enabling security personnel to rapidly secure doors by simply positioning and releasing the device.

Inventive Principle:
Principle #25Self-service

2Reliability

If vertical bars on double-doors are used for securing, then the doors can be locked, but they may not prevent opening from the opposite side

Engineering Contradiction:
Improvesecurity effectivenessVSAvoidaccessibility for securing
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The door clamp features a base with separate first and second grooves positioned to receive different vertical bars from different doors. Each groove is independently configured to capture a specific bar, allowing the single clamp device to simultaneously secure both doors by engaging their respective bars in a segmented manner.

Inventive Principle:
Principle #1Segmentation

3Reliability

If a door clamp with multiple components is designed, then it can provide secure locking, but the device complexity increases

Engineering Contradiction:
Improvelocking securityVSAvoidclamp structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The door clamp integrates multiple functional components into a single unified device: the base provides structural support and positioning, the grooves provide bar reception, the spring-biased pins provide automatic locking, and the release mechanism provides control. These components work together as an integrated system rather than separate parts, maintaining security while reducing operational complexity.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS9279278B2Door clamp
Publication Date: 2016.03.08 PLOSKUNAK J ROBERT
  • US9279278B2 patent drawing
  • US9279278B2 patent drawing
  • US9279278B2 patent drawing

AI summary

Apparatuses and methods for securing a door. The apparatuses include a door clamp having a base with a first groove and a second groove. A first stop and a second stop are movably attached to the base. The first stop has a first position in relation to the base wherein the first groove is exposed and has a second position in relation to the base wherein the first groove is covered by the first stop. The second stop has a first position in relation to the base wherein the second groove is exposed and has a second position in relation to the base wherein the second groove is covered by the second stop.