Rotatable Snow Chute Assembly Without Cable Entanglement

Solution Overview

Problem

Conventional snow removal devices with discharge chutes are limited by physical constraints that prevent continuous 360-degree rotation, leading to issues with cable entanglement and damage, and lack of operator-independent direction control.

Innovation Solution

A snow removal device with a rotatable chute assembly and deflector that allows for continuous 360-degree rotation, powered by a chute rotator and deflector adjuster using a contact plate assembly for electrical power transmission, enabling remote control of the deflector orientation without cables.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional discharge chutes are used with limited rotation, then cable entanglement and damage are prevented, but operational flexibility and direction control are reduced

Engineering Contradiction:

Improvedirection controlVSAvoidcable durability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent removes cables from the rotating chute assembly entirely, extracting the problematic element that caused entanglement and damage. The chute can now rotate freely without cables restricting its motion or requiring complex cable management systems.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the mechanical cable-driven rotation system with an electric motor that directly drives the chute rotation. This substitution eliminates the need for cables and pulleys, enabling continuous 360-degree rotation without the risk of cable entanglement or damage.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If continuous 360-degree rotation is implemented, then operational flexibility is enhanced, but cable entanglement and damage occur

Engineering Contradiction:

Improverotation rangeVSAvoidcable entanglement

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The patent removes cables from the rotating chute assembly entirely, extracting the problematic element that caused entanglement and damage. The chute can now rotate freely without cables restricting its motion or requiring complex cable management systems.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the mechanical cable-driven rotation system with an electric motor that directly drives the chute rotation. This substitution eliminates the need for cables and pulleys, enabling continuous 360-degree rotation without the risk of cable entanglement or damage.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If manual operation is used, then device complexity is reduced, but operator independence and efficiency are limited

Engineering Contradiction:

Improveoperational efficiencyVSAvoidcontrol system

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent implements autonomous operation capability where the robotic device can independently navigate and operate the chute without human intervention. The device monitors its own position and automatically adjusts the chute direction based on pre-programmed routes or real-time sensor data, enabling hands-free operation.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical control with an automated control system that uses electric motors, sensors, and programmable logic to operate the chute. This substitution enables remote or autonomous operation, significantly improving productivity by eliminating the need for continuous human intervention.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS12534862B2Snow removal device with continuously rotatable discharge chute

Publication Date: 2026.01.27 HUSQVARNA AB

AI summary

A snow removal device may include a chassis supporting a power unit, a mobility assembly operably coupled to the chassis to provide mobility for the snow removal device responsive to power provision from the power unit, a working assembly configured to move snow to an ejection path responsive to power provision from the power unit, and a chute assembly forming a portion of the ejection path, the chute assembly comprising a chute and a deflector. The chute may be rotatable via a chute rotator configured to provide at least 360 degree automated rotation of the chute. An orientation of the deflector may be changeable via automated pivoting of the deflector via an electrically operable deflector adjuster.