Golf Practice Counterweight Assembly Without Protruding Threaded Rod

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Solution Overview

Problem

Existing transportable golf practice devices lack a secure fastening mechanism for the counterweight assembly, leading to instability and potential safety hazards due to protruding threaded rods.

Innovation Solution

Incorporation of a serrated washer and a new configuration for the cylindrical counterweight and threaded rods, which eliminates the protruding lower threaded rod and provides a secure fastening mechanism between the counterweight and the lower disc.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a threaded rod protrudes from the lower side of the counterweight assembly, then the assembly can be secured to the disc, but it creates safety hazards due to sharp edges and inconvenience when placing on support base

Engineering Contradiction:

Improvesecure fasteningVSAvoidsharp edges

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The harmful protruding threaded rod is extracted and replaced with a recessed configuration. The threaded rod is now contained within a recess in the lower base of the counterweight, eliminating the sharp protruding edges while maintaining the fastening function through the interior-threaded cylinder that receives the screwing action.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

A serrated washer is introduced as an intermediary element between the lower disc and the counterweight assembly. This washer provides a secure fastening interface through its serrated edges that grip the disc surface, while the counterweight's lower base recess contains the threaded rod, preventing sharp edges from protruding outward.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Stability of the object's composition

If a secure fastening mechanism is implemented between counterweight and lower disc, then assembly stability is improved, but device complexity increases

Engineering Contradiction:

Improveassembly stabilityVSAvoidfastening mechanism

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The fastening function is merged into the lower base of the counterweight itself. The lower base incorporates both the recess that contains the threaded rod and the interface that receives the serrated washer, combining multiple functions into a single integrated component rather than separate fastening elements.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The serrated washer serves multiple functions simultaneously: it provides the fastening interface for securing the counterweight to the lower disc, and its serrated edges inherently provide grip and stability without requiring additional locking mechanisms or complex fastening steps.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS20250135305A1Supporting and fastening system for a portable device for playing golf

Publication Date: 2025.05.01 GRAVIT PRACTICE GOLF SL

AI summary

The present invention relates to a supporting and fastening system for a portable device for playing golf, consisting of a cylindrical anodised aluminium counterweight (3) measuring 43 mm in diameter and 54 mm in length, weighing 57 g and having a cylindrical hollow (1) performed in a lower base (2) of a counterweight (3), wherein there is a lower threaded rod (4) that is in turn screwed into an internally threaded cylinder (5) fastened on the centre of the lower disc (6) and which protrudes to allow screwing and such that it has a bevelled washer (7) that surrounds the threaded cylinder (5) and that is fastened on the lower disc (6).