Ski Binding Pin Housing With Grease Storage Against Sticking

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Solution Overview

Problem

Existing cross-country and backcountry skiing binding systems face issues with protruding pins that are prone to corrosion, mechanical wear, and mechanical sticking due to exposure to varying temperatures, moisture, and environmental conditions, leading to functional failures over time.

Innovation Solution

A binding system with transverse, protruding, displaceable pins housed in a spring-biased mechanism, featuring varying diameters and grease storage, allowing for easy maintenance and lubrication to prevent corrosion and mechanical sticking, with optional refilling mechanisms to ensure long-term functionality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If protruding pins are used in binding systems, then the binding system provides secure attachment and release functionality, but the pins are prone to corrosion, mechanical wear, and mechanical sticking due to exposure to varying temperatures, moisture, and environmental conditions

Engineering Contradiction:
Improvefunctional reliability of pinsVSAvoidcorrosion and mechanical wear
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies a flexible protective coating or shell around the pins to isolate them from corrosive environmental factors such as moisture and temperature variations, preventing corrosion and mechanical sticking while maintaining the pins' functional reliability

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The patent creates a protected environment around the pins using corrosion-resistant materials or coatings that provide an inert barrier against harmful environmental factors, ensuring the pins remain free from corrosion and mechanical wear over time

Inventive Principle:
Principle #39Inert atmosphere (Inert environment)

2Object-affected harmful factors

If pins are housed in a closed housing, then protection from environmental factors is improved, but the pins may get stuck due to condensation, temperature variations, and mechanical wearing during storage periods

Engineering Contradiction:
Improveprotection from environmental factorsVSAvoidpin mobility and functionality
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent extracts the pins from a completely closed housing during storage periods or before use, allowing them to breathe and preventing condensation buildup that could cause sticking, while still providing protection when in use

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent implements a dynamic housing system that can open or adjust its closure state based on storage versus use conditions, preventing condensation and temperature-related sticking while maintaining protection from environmental factors

Inventive Principle:
Principle #15Dynamics

3Ease of operation

If spring-biased displaceable pins are used, then ease of operation and release is improved, but complexity of the binding system increases due to additional components

Engineering Contradiction:
Improveease of boot releaseVSAvoidnumber of components
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent combines the spring bias mechanism and pin displacement functionality into a unified, integrated component structure, reducing the number of separate parts while maintaining ease of operation for boot release

Inventive Principle:
Principle #5Merging (Combining)

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 maintains reliable operation under varying conditions by preventing corrosion and mechanical sticking, ensuring easy maintenance and replacement of parts, and facilitating smooth release of the ski boot from the binding.

Implementation Method 1

at least one spring element (2) arranged in the housing (3) between the pins (1)

Methodology Applied
Scientific EffectSpring: Spring

Implementation Method 2

featureing varying diameters and grease storage, allowing for easy maintenance and lubrication to prevent corrosion and mechanical sticking

Methodology Applied
Scientific EffectLubrication: Lubrication

Data Source

PatentUS12576328B2Part of a binding system
Publication Date: 2026.03.17 ROTTEFELLA AS
  • US12576328B2 patent drawing
  • US12576328B2 patent drawing
  • US12576328B2 patent drawing

AI summary

The present invention relates to a part of a skiing binding system, comprising a housing with, on the inside, a fully or partially through-going bore with an inner diameter, coaxial with a barrel arranged in a direction transverse to a longitudinal axis of a ski, wherein two pins, each moveable transverse to a longitudinal axis of the ski in a first direction and second direction with at least one intermediate spring element are arranged, and wherein the pins are adapted to slide in the barrel between a protruding and a retracted position. According to an aspect of the invention, the part of the pins that is exposed when the pins are in the protruding position, has a reduced outer diameter compared with the inner diameter of the barrel. The invention also relates to a method for lubricating the pins with a lubricant.