Joint Compound Dispenser with Ball-Jointed V-Flap Applicator

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Solution Overview

Problem

Existing tools for dispensing joint filling compound in gyproc sheeting installation, particularly in corners, face issues with uneven distribution and reliability in providing a steady supply, with many devices either clogging or failing to ensure smooth application.

Innovation Solution

A combined joint compound dispenser and applicator featuring a cylinder with a piston, a ball joint connection to an applicator with flaps forming a <> shape, and wheels on wedges for smooth gliding, which ensures even distribution and application by expelling compound through a slit created by an arrow-shaped element, and a carbide tip for a clean line at the corner.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a wheel is used to dispense joint filling compound, then the compound can be applied to walls, but the wheel tends to clog up with compound and becomes inefficient over time

Engineering Contradiction:

Improvecompound dispensing efficiencyVSAvoidwheel clogging resistance

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The invention removes the wheel component entirely and replaces it with a piston-based dispensing mechanism. The piston is pushed within a cylinder to force compound through a nozzle, eliminating the wheel structure that was prone to clogging while maintaining compound dispensing functionality.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention replaces the mechanical wheel-based dispensing system with a piston-cylinder mechanical system. The piston's linear motion within the cylinder generates controlled pressure to force compound through the nozzle, providing more reliable and clog-resistant compound delivery.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If openings are provided in the device for compound discharge, then compound can be dispensed, but the openings do not provide for even distribution of compound material

Engineering Contradiction:

Improvecompound distribution uniformityVSAvoidcompound spreading evenness

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The invention employs a specialized nozzle structure with an elongated opening that has specific geometric characteristics. The nozzle includes a broad base section and a tapered tip section, creating localized flow patterns that distribute compound evenly across the wall surface rather than concentrating it at a single point.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The invention changes the geometric parameters of the compound discharge opening through the nozzle design. The elongated shape, broad base, and tapered tip create controlled compound flow and distribution patterns, transforming the simple opening into a precision discharge mechanism that ensures even compound application.

Inventive Principle:

Principle #35Parameter changes

3Ease of operation

If the device is designed to glide along a wall, then compound can be applied to walls, but the gliding motion is not smooth and regular

Engineering Contradiction:

Improvewall gliding smoothnessVSAvoidcompound application consistency

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The invention incorporates curved surfaces and rounded transitions in the nozzle structure and applicator design. The curved geometry guides the compound flow smoothly and creates a regular gliding motion along the wall surface, eliminating abrupt changes in direction that would cause irregular movement or compound splashing.

Inventive Principle:

Principle #14Spheroidality (Curvature)

4Device complexity

If a combined dispenser and applicator is used, then both dispensing and application functions are integrated, but the device is either very good at dispensing but not very good at applying or very good at applying but not reliable in providing a steady supply

Engineering Contradiction:

Improveintegration of dispenser and applicatorVSAvoidsteady compound supply reliability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The invention merges the dispenser and applicator into a single integrated unit where the piston-cylinder dispensing mechanism is directly connected to the nozzle and applicator components. This integration ensures that the compound flow from the dispenser is directly and reliably transmitted to the application surface, eliminating the reliability issues that arise from separate or loosely connected components.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS7674059B2Combined joint compound dispenser and applicator for corners

Publication Date: 2010.03.09 DAIGLE MARCEL

AI summary

A combined joint compound dispenser and applicator for corners comprises a cylinder mechanically attached to a tube extending therefrom. The cylinder pushes a compound by way of a piston. A ball joint provides an articulated connection between the tube and an applicator by way of an insertion shoe. The applicator has two flaps cojoined at an apex so as to form a <<V>> shape. The compound passes from the tube through the applicator by way of a slit, and that slit is formed by an arrow shaped element placed in front of a hole. The hole is at the apex. Wheels located on wedges allow the applicator to roll on walls. The wedges extend integrally from the flaps.