Vacuum assemblies and methods

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Solution Overview

Problem

Water filter vacuums require improved mechanisms for removing and cleaning the interior water reservoir, and wand assemblies with electrical connections face mechanical wear due to repeated motion, leading to reduced durability.

Innovation Solution

The vacuum design incorporates a rotatable housing with a water pan mount and biasing members, such as gas lift springs, to facilitate easy removal of the water reservoir and a biasing member system that maintains electrical contact between wand terminals, preventing sliding movement during use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If the housing is made fixed and non-rotatable, then the structural stability is improved, but the ease of water pan removal deteriorates

Engineering Contradiction:
Improvestructural stabilityVSAvoidease of water pan removal
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The housing is designed to be dynamically changeable between a locked fixed state (during operation) and an unlocked rotatable state (during maintenance). The latch mechanism enables this dynamic transformation, allowing the housing to switch between providing structural stability and facilitating easy water pan removal based on operational needs.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If the electrical terminal connections are allowed to move relative to each other during cyclic use, then the adaptability to movement is improved, but the reliability of electrical contact deteriorates

Engineering Contradiction:
Improveadaptability to movementVSAvoidreliability of electrical contact
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

A biasing member (spring) is introduced as an intermediary element between the electrical terminal connections. This spring absorbs the mechanical stress and relative motion between connectors while maintaining continuous electrical contact, thereby preserving reliability during cyclic accessory attachment and detachment operations.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Device complexity

If the wand assembly is designed without biasing members, then the device complexity is reduced, but the reliability of electrical contact during cyclic use deteriorates

Engineering Contradiction:
Improvedevice complexityVSAvoidreliability of electrical contact
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The biasing member (spring) provides self-service by automatically maintaining electrical contact between terminal connections during cyclic accessory attachment and detachment. The spring's elastic properties enable it to self-adjust and compensate for movement without requiring external intervention, ensuring reliable electrical connection throughout the product lifecycle.

Inventive Principle:
Principle #25Self-service

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 solution enhances the ease of water reservoir removal and cleaning, while reducing mechanical wear on wand assemblies by maintaining consistent electrical contact, thereby increasing the lifespan of the vacuum components.

Implementation Method 1

a series of biasing members coupled to the housing and the water pan mount, wherein the series of biasing members are configured to apply rotational force to the housing about the fulcrum

Methodology Applied
Scientific EffectGas lift spring: Gas Lift

Implementation Method 2

one of at least two gas lift springs, a set of compression springs, a set of extension springs, a set of torsion springs, a set of tension springs wherein each tension spring is operably coupled to opposed bars, and a constant force spring

Methodology Applied
Scientific EffectSpring: Spring

Implementation Method 3

A biasing member is operably coupled to one of the first terminal and the second terminal, wherein, when the hollow wand is releasably coupled to the vacuum accessory, the biasing member is compressed such that the first terminal and the second terminal are maintained in mating contact with each other

Methodology Applied
Scientific EffectSpring: Spring

Data Source

PatentUS11224322B2Vacuum assemblies and methods
Publication Date: 2022.01.18 REXAIR LLC
  • US11224322B2 patent drawing
  • US11224322B2 patent drawing
  • US11224322B2 patent drawing

AI summary

Vacuums including a hollow wand and a vacuum accessory are provided herein. The vacuum accessory is configured to releasably couple with the hollow wand. A first terminal is disposed at a distal end of the hollow wand. A second terminal is disposed at a proximal end of the vacuum accessory. The second terminal is configured to correspondingly electrically mate with the first terminal. A biasing member is operably coupled to one of the first terminal and the second terminal, wherein, when the hollow wand is releasably coupled to the vacuum accessory, the biasing member is compressed such that the first terminal and the second terminal are maintained in mating contact with each other.