Extensible Adhesive Gun With Inner Rod Extension Tube
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Solution Overview
Problem
The existing adhesive dispensing systems require frequent ladder use and climbing, which is unsafe and time-consuming, especially when applying adhesive to elevated surfaces such as ceilings and crown moldings, and existing extension solutions are either expensive or difficult to learn and use effectively.
Innovation Solution
An extensible adhesive dispensing gun system that includes an extension tube assembly with an inner rod member for axial movement, allowing the adhesive to be applied without climbing a ladder, featuring a plunger head that ensures uniform pressure and seal to prevent adhesive escape, enabling easy and quick application of adhesive over elevated surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a conventional adhesive dispensing gun is used to apply adhesive to elevated surfaces, then the adhesive can be applied to the surface, but the installer must repeatedly climb and move the ladder which is time-consuming and unsafe
Solution Approach 1:
The adhesive dispensing system is segmented into modular components: a gun body, a separate extendable tube assembly, and a syringe. This allows the tube to be extended to reach elevated surfaces while keeping the gun body and syringe accessible to the installer, eliminating the need to move the ladder repeatedly.
Solution Approach 2:
The system adds a longitudinal dimension to the adhesive dispensing gun through the extendable tube assembly. The tube can be extended along the vertical axis to reach ceilings and crown moldings, transforming a handheld tool into a reach-extension system that eliminates ladder dependency.
2Length of moving object
If an extension pole assembly with trigger mechanism is used to reach elevated surfaces, then the reach is extended, but the device becomes expensive and difficult to learn and use
Solution Approach 1:
The complex trigger mechanism and cable linkage system from existing extension solutions is extracted and replaced. Instead, this invention uses a simple plunger that moves linearly within the extendable tube, actuated directly by the gun's existing trigger, eliminating the need for cables, pulleys, or complex linkages.
Solution Approach 2:
The extendable tube assembly acts as a simple intermediary component that transmits the plunger's linear motion to the syringe piston. This intermediary mechanism is mechanically simple compared to full extension pole assemblies, requiring no complex trigger linkages or cable systems.
3Productivity
If the plunger applies force to the syringe piston through the extendable tube, then adhesive is dispensed, but adhesive may escape through the syringe if pressure is not uniform
Solution Approach 1:
The plunger head is designed with a specific geometry that concentrates force uniformly across the syringe piston surface. The plunger head's cross-sectional area matches the piston area, ensuring even pressure distribution and preventing adhesive leakage while maintaining efficient dispensing.
Solution Approach 2:
The plunger head is nested within the extendable tube assembly, with the plunger moving axially inside the tube. This nested configuration allows the plunger to apply force directly to the piston through the tube's internal space, maintaining a sealed environment that prevents adhesive escape.
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 system allows for safe and efficient application of adhesive over elevated surfaces without repeated ladder use, reducing installation time and cost by providing a user-friendly, cost-effective solution for extending the reach of conventional adhesive guns.
Implementation Method 1
an elongated plunger arranged to advance from the front end of the gun body in response to operation of the trigger mechanism... When gun plunger is advanced from the gun body against the back end of the rod member, the plunger head at the leading end of the rod member forces the piston in the syringe to urge the adhesive out of the nozzle
Data Source
AI summary
An extensible adhesive dispensing gun system. A syringe has a piston for urging an adhesive out of a nozzle, and a first mount at a back end of the syringe. A gun body contains a mechanism for advancing a plunger from a front end of the body in response to a trigger, and a second mount is disposed on the front end. An extension tube assembly includes an outer tube having near and far end adapters. A third mount on the near end adapter engages the second mount on the gun body, and a fourth mount on the far end adapter engages the first mount on the syringe. An inner rod member is arranged inside the outer tube. When the gun plunger is urged against a back end of the rod member, a leading end of the member forces the syringe piston to urge the adhesive out of the nozzle.