Elastic Stem Insert with Serpentine Smoke Pathway for Cannabis Pipe

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Solution Overview

Problem

Existing cannabis smoking pipes are fragile, difficult to clean, and require frequent relighting due to their design, which includes brittle materials like glass and multiple parts that are hard to disassemble.

Innovation Solution

A compact cannabis pipe design featuring an elongated smoke pathway in a convoluted serpentine shape, made from an elastic stem insert and a rigid outer shell, which cools and purifies smoke, and includes a pipe bowl with a built-in screen for easy cleaning and consistent burning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If glass is used for the pipe body, then the pipe avoids interaction of heated smoke with wood or other material, but the pipe becomes fragile and tends to get hot

Engineering Contradiction:
Improveinteraction of heated smoke with woodVSAvoidfragility of glass
Core Design Contradiction:
Object-affected harmful factorsVSStrength

Solution Approach 1:

The patent employs a composite structure consisting of an inner glass liner that contacts the smoke to prevent chemical interaction, combined with an outer flexible housing material (such as silicone or rubber) that provides mechanical strength and shock resistance. This composite approach allows the pipe to maintain the chemical inertness benefit of glass while eliminating its fragility through the protective outer layer.

Inventive Principle:
Principle #40Composite materials

2Object-affected harmful factors

If a long tube is provided to cool and purify smoke, then lung injury from hot smoke is prevented, but the device size becomes problematic for travel or transport

Engineering Contradiction:
Improvehot smoke inhalation riskVSAvoiddevice size for transport
Core Design Contradiction:
Object-affected harmful factorsVSVolume of moving object

Solution Approach 1:

The patent utilizes a coiled or serpentine configuration for the smoke pathway tube, transforming a long linear tube into a compact curved structure. This allows the smoke to travel through an extended pathway (providing adequate cooling and purification) while the tube occupies minimal space when coiled, making the device portable and travel-friendly.

Inventive Principle:
Principle #14Spheroidality (Curvature)

3Adaptability or versatility

If multiple interconnected parts are used in the pipe, then functionality is enhanced, but cleaning smoking deposits from crevices and passages becomes difficult and tedious

Engineering Contradiction:
Improvefunctional capabilitiesVSAvoiddifficulty of cleaning deposits
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent designs the pipe with segmented modular components that can be easily disassembled from one another. The inner glass liner, outer housing, and other components are designed to separate without complex tools, allowing users to access and clean all internal surfaces and crevices. This segmentation maintains functional versatility while dramatically improving cleanability by eliminating hard-to-reach interconnected joints.

Inventive Principle:
Principle #1Segmentation

4Duration of action of stationary object

If the burning of smoking material is not frequently drawn through, then the burning goes out requiring repeated lighting, but frequent drawing is needed to maintain burning

Engineering Contradiction:
Improvecontinuous burning durationVSAvoidfrequency of relighting
Core Design Contradiction:
Duration of action of stationary objectVSEase of operation

Solution Approach 1:

The patent incorporates a percolation chamber with screens and baffle structures that maintain ember contact and heat distribution across the smoking material even during periods of non-use. The design ensures continuous heat transfer from the burning material to the percolation elements, preventing the ember from dying out and maintaining readiness for the next draw without requiring frequent relighting.

Inventive Principle:
Principle #20Continuity of useful action

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 compact pipe effectively cools and purifies smoke, preventing hot inhalation and removing debris, while being easy to clean and maintain consistent burning without frequent relighting.

Implementation Method 1

The pathway for smoke is formed when the elastic stem insert is placed inside a rigid outer shell... to cool the smoke along the way so as to prevent the risk of inhaling hot smoke

Methodology Applied
Scientific EffectHeat transfer: Conduction (thermal)

Implementation Method 2

The elongated smoke pathway is arranged in a convoluted serpentine shape... to remove various smoking debris and inclusions in the smoke such as unburnt pieces of plant, droplets of tar or oil, etc.

Methodology Applied
Scientific EffectPhysical separation: Cyclone Separation

Data Source

PatentUS12295409B2Smoke clearing and cooling insert and cannabis smoking implements using thereof
Publication Date: 2025.05.13 WEEDGETS INC
  • US12295409B2 patent drawing
  • US12295409B2 patent drawing
  • US12295409B2 patent drawing

AI summary

A compact pipe or an insert assembly for smoking cannabis features an elongated pathway for smoke prior to entering the mouthpiece so as to cause smoke cooling and purification by removal of smoking debris along the pathway. An elongated serpentine groove is formed on the exterior of an elastic stem insert configured for insertion into a rigid outer shell during the pipe assembly. Elastic stem insert also serves to brush off smoke stains and deposits of smoke debris from the inside of the outer shell, making cleaning of the pipe easy and convenient. A smoke chamber is formed below the cannabis container to cause even distribution of air and smoke flow throughout the volume of cannabis to eliminate the need to frequently light up the pipe during use. An insert assembly is also described for use with bongs and other smoking implements.