Pressure Locking Clamp With Load-Activated Self-Locking Release

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Solution Overview

Problem

There is a need for a clamp that is easy to use and provides robust operation under various environmental and load conditions, offering high clamping force when needed while being easy to release and reusable.

Innovation Solution

A pressure locking clamp design featuring a base divided by an imaginary central plane, with a hook arm and clasp arm that pivot around parallel axes, forming an eye enclosure with pressure-induced lock contact areas to create a self-locking mechanism that maintains high clamping force under load and allows easy release.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a clamp uses a simple pivot mechanism for easy operation, then ease of operation is improved, but reliability under heavy loads deteriorates

Engineering Contradiction:
Improveease of useVSAvoidrobust operation under load
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The clamp employs a self-locking mechanism where the applied load automatically engages the locking surfaces between the hook arm and clasp arm. The pressure from the load causes the lock contact area of the clasp arm to press against the lock contact area of the hook arm, creating a self-reinforcing lock that maintains reliability without requiring additional actuation or complex control systems.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The clamp transitions from a static locking mechanism to a dynamic one where the locking force is proportional to the applied load. As the load increases, the pressure inside the eye enclosure increases, which in turn increases the locking force between the arms, allowing the mechanism to adapt its locking strength to the operational requirements.

Inventive Principle:
Principle #15Dynamics

2Strength

If a clamp provides high clamping force under heavy loads, then strength is improved, but ease of release deteriorates

Engineering Contradiction:
Improveclamping forceVSAvoideasy to release
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The high clamping force that might seem to make release difficult is converted into the very mechanism that enables easy release. The pressure from the heavy load maintains the locked position during operation, but when the load is removed, the same mechanical structure allows the arms to pivot away from each other effortlessly, as the locking pressure is no longer present to resist release.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

3Reliability

If a clamp uses a self-locking mechanism with pressure-induced lock contact, then reliability is improved, but device complexity increases

Engineering Contradiction:
Improveself-locking capabilityVSAvoidstructural complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The invention merges the clamping function and the locking function into a single integrated mechanism. The hook arm and clasp arm serve both to apply clamping force and to provide the locking action through their lock contact areas. This consolidation eliminates the need for separate locking components, maintaining reliability while minimizing structural complexity.

Inventive Principle:
Principle #5Merging (Combining)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The clamp achieves robust operation with high clamping force under heavy loads and easy reversibility, ensuring reliable and efficient clamping and release cycles, effectively addressing the need for a versatile and user-friendly solution.

Implementation Method 1

pressure inside the eye enclosure presses the lock contact area of the clasp arm against the lock contact area of the hook arm

Methodology Applied
Scientific EffectPressure: Pressure Increase

Implementation Method 2

The hook arm pivots on the first half of the base around a first axis parallel to the imaginary central plane. The clasp arm pivots on the second half of the base around a second axis parallel to the imaginary central plane.

Methodology Applied
Scientific EffectPivoting: Hinge

Data Source

PatentUS20240280124A1Pressure Locking Clamp
Publication Date: 2024.08.22 THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
  • US20240280124A1 patent drawing
  • US20240280124A1 patent drawing

AI summary

A pressure locking clamp includes a base, a hook arm, and a clasp arm. An imaginary central plane divides the base into a first and second half. The hook arm pivots on the first half of the base around a first axis parallel to the imaginary central plane. The clasp arm pivots on the second half of the base around a second axis parallel to the imaginary central plane. The hook and clasp arms each includes a lock contact area. In a closed state of the pressure locking clamp, the hook and clasp arms and the base together form an eye enclosure. In the closed state, pressure inside the eye enclosure presses the lock contact area of the clasp arm against the lock contact area of the hook arm, and this inhibits the hook and clasp arms from pivoting away from each other, reinforcing the eye enclosure.