Trombone Finger Positioner with Elliptical Cut-outs
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Solution Overview
Problem
Trombone players often struggle with proper finger positioning and slide technique due to the shape of the trombone slide brace, leading to inefficient playing and potential instrument damage from incorrect grip and pressure.
Innovation Solution
An ergonomically shaped snap-fit trombone finger positioner with elliptical grooves and cut-outs made from flexible materials like silicone or reinforced leather, designed to fit onto the slide brace, guiding the fingers and thumb into the correct position, thereby training proper muscle memory for accurate and gentle handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the slide brace is made as a narrow cylinder for structural simplicity, then manufacturing is easier, but finger positioning becomes ambiguous and incorrect
Solution Approach 1:
The patent applies local quality by adding specific structural features (ridges, grooves, flattened sections) to particular locations on the cylindrical slide brace. These localized modifications create distinct tactile zones that guide finger placement without changing the overall cylindrical form, thus maintaining manufacturing simplicity while improving operability.
Solution Approach 2:
The patent introduces an intermediary tactile interface between the player's fingers and the slide brace. The added ridges, grooves, and flattened sections serve as mediating structures that provide sensory feedback and physical guidance, enabling correct finger positioning without requiring the player to consciously think about hand placement.
2Ease of operation
If players hold the slide brace in their comfort position, then ease of operation improves, but slide precision and timing deteriorate
Solution Approach 1:
The patent implements preliminary action by pre-configuring the slide brace with ergonomic features (ridges, grooves, flattened sections) that automatically guide the player's fingers into the correct position before playing begins. This pre-established tactile framework ensures proper hand placement is achieved instinctively, eliminating the need for conscious correction during performance.
Solution Approach 2:
The patent applies self-service by designing the slide brace to automatically correct improper hand positioning through its tactile features. The ridges and grooves provide self-correcting feedback that guides fingers into proper alignment without requiring external instruction or conscious effort from the player, making the correct technique self-evident through touch.
3Reliability
If players apply firm grip pressure to control the slide, then slide control improves, but instrument damage risk increases
Solution Approach 1:
The patent distributes grip pressure across multiple localized contact points created by the ridges and grooves. Instead of concentrating force in one location, the tactile features create several discrete areas where fingers naturally rest, spreading the mechanical load and reducing stress on any single point of the slide brace, thereby preventing damage while maintaining control.
Solution Approach 2:
The patent incorporates curved and rounded tactile features (rounded ridges, smooth grooves) that naturally distribute pressure more evenly across the finger pads and slide brace surface. The curved geometry prevents sharp concentration of force, allowing players to maintain secure grip with gentler, more distributed pressure that protects the instrument from damage.
Data Source
AI summary
The present invention provides a trombone finger positioner, comprising a cylindrical structure, wherein said cylindrical structure having a pointer finger cut-out, a middle finger cut-out ,and a thumb cut-out; said cylindrical structure also incorporates a vertical cut and an opening along its full length; the pointer finger cut-out and middle finger cut-out have a major axis aligned along the Y-axis and the minor axis aligned along the X-axis, and the center of both the grooves are in the Y-axis; and said thumb cut-out is opposite to the middle finger cut-out and their centers are on the same axis.