Keyless Locking Tremolo System for Tool-Free String Adjustment

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional locking tremolo systems and nut systems require external tools for string restraint, tuning, and replacement, leading to difficulties in re-stringing, intonating, and maintaining tuning, with potential damage to components and tools due to the need for high force application.

Innovation Solution

A keyless locking tremolo system that securely clamps strings without external tools, featuring a locking base with adjustable tightening posts and levers for easy string tension adjustment, and a circumferential clamp that anchors strings ahead of the ball end, allowing for tool-free tuning and string replacement, along with an intonation adjustment mechanism for precise tuning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional locking tremolo systems use external tools (Allen wrench) to clamp strings with cap screws, then string restraint and tuning stability are achieved, but the system becomes difficult to re-string, intonate, and tune, and components may crack or damage due to repeated high force application

Engineering Contradiction:

Improvetuning stabilityVSAvoidease of re-stringing and tuning

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The locking mechanism uses a self-locking lever system that automatically clamps the string when the lever is engaged, eliminating the need for external tools like Allen wrenches. The lever applies force through a fulcrum to clamp the string between the locking block and saddle block, and can be easily released by lifting the lever, allowing tool-free string replacement and tuning adjustments.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

Instead of using a threaded cap screw that requires rotational tightening with an external tool, the invention uses a lever that pivots on a fulcrum to apply clamping force directly. The lever system inverts the conventional approach by using mechanical leverage through a fulcrum point to achieve high clamping force with simple lever engagement rather than threaded fastening.

Inventive Principle:

Principle #13The other way round (Inversion)

2Strength

If conventional locking tremolo systems apply great force to tighten string clamps with external tools, then strings are securely restrained, but the repeated application of force can lead to string clamp socket cap screws or tools becoming damaged

Engineering Contradiction:

Improvestring restraint forceVSAvoidcomponent durability

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

The invention replaces the threaded cap screw mechanism with a lever system that pivots on a fulcrum. This lever system applies clamping force through mechanical advantage, achieving high restraint force without the need for repeated tightening and loosening of threaded fasteners, thereby preventing damage to cap screws and tools.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The fulcrum acts as an intermediary that amplifies the lever's applied force to generate high clamping force on the string. The lever system mediates between the user's manual lever engagement and the high force required to clamp the string securely, distributing the force through the fulcrum mechanism rather than concentrating it on a small threaded fastener.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of manufacture

If conventional locking tremolo systems require removing ball ends from strings before insertion, then strings can be secured in the saddle, but the process becomes more complex and time-consuming

Engineering Contradiction:

Improveease of string installationVSAvoidtime for string replacement

Core Design Contradiction:

Ease of manufactureVSLoss of time

Solution Approach 1:

The invention extracts the requirement for ball-end strings by using a locking mechanism that secures the string at the nut and tremolo bridge without needing to remove or modify the ball end. The lever-based locking system at the nut and the circumferential clamp at the tremolo bridge hold the string in place, eliminating the need for the complex process of removing ball ends and inserting strings into traditional saddles.

Inventive Principle:

Principle #2Taking out (Extraction)

4Measurement precision

If conventional locking tremolo systems use trial and error adjustment of saddles for intonation, then precise intonation can be achieved, but the process is tedious and time-consuming

Engineering Contradiction:

Improveintonation precisionVSAvoidtime for intonation adjustment

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The locking mechanism at the nut and tremolo bridge preliminarily secures the string in a stable position, preventing slippage during intonation adjustments. This preliminary locking allows for more precise and efficient intonation setup, as the string remains firmly held while adjustments are made, eliminating the need for repeated tightening and loosening of saddles during the intonation process.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11087723B2Keyless locking tremolo systems and methods

Publication Date: 2021.08.10 HACKETT MARK E

AI summary

Embodiments disclosed herein describe keyless locking tremolo systems and methods for musical instruments that are configured to tune and restrain strings for a musical instrument without an external tool. Embodiments are configured to adjust the vertical positioning of a tightening post and string clamp without an external tool.