Backpack Vacuum Wand with Forearm Cuff for Reach and Fatigue Control
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Solution Overview
Problem
Existing landscape maintenance devices struggle to efficiently remove debris from between rocks in decorative rock beds without ejecting rocks, and they often cause operator fatigue and lack control over longer tube strings.
Innovation Solution
The development of landscape maintenance systems that include backpack leaf blower systems with forearm cuff devices, vacuum systems with adjustable flow regulators and rock extractor devices, and conversion kits that allow existing leaf vacuum/blower combo units to be converted into backpack-supported units with forearm swing mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If conventional hand-held vacuum tubes are used to reach under trees and shrubs, then reach is improved, but operator fatigue in wrist, shoulder, and back increases
Solution Approach 1:
The vacuum system is divided into multiple segments: a backpack-mounted power unit, an adjustable extension tube that can be configured in different lengths and angles, and a separate nozzle assembly. This segmentation allows the heavy components to be distributed across the operator's back and arms rather than concentrated in one hand-held tube, reducing wrist and shoulder fatigue while maintaining extended reach.
Solution Approach 2:
The system transitions from a traditional horizontal hand-held tube to a multi-dimensional configuration with adjustable extension tubes that can be angled upward or downward and positioned at various heights. The backpack unit provides vertical support, creating a three-dimensional work envelope that reduces the need for the operator to bend or reach awkwardly, thereby reducing back fatigue while maintaining access to difficult areas.
2Length of moving object
If longer tube strings are used to reach under trees and shrubs, then reach is improved, but control over the tube string deteriorates
Solution Approach 1:
The long tube string is segmented into multiple connectable sections with standardized coupling mechanisms. Each section can be independently positioned and angled, allowing the operator to maintain control at each joint rather than trying to manage a single long flexible hose. The modular design provides mechanical support points that prevent excessive sagging and improve handling.
Solution Approach 2:
The extension tubes are pre-configured with adjustable joints and coupling mechanisms that allow the operator to set the desired angle and position before connecting to the vacuum nozzle. This preliminary configuration ensures proper alignment and control is established before the tube is extended to its full length, making it easier to manage the overall system.
3Productivity
If high vacuum force is used to remove deep debris from between rocks, then debris removal effectiveness is improved, but rocks are sucked in with the debris
Solution Approach 1:
The nozzle assembly incorporates a rock guard with selectively positioned openings that create zones of different vacuum force. The rock guard structure provides physical protection for larger rocks while allowing smaller debris to pass through. The nozzle geometry is designed to concentrate vacuum force in specific areas where debris is most likely to be found, rather than applying uniform force across the entire opening, thus removing deep debris effectively while protecting rocks from being sucked in.
4Productivity
If conventional leaf blowers are used to agitate rocks to loosen debris, then debris loosening is improved, but rocks are ejected from rock beds
Solution Approach 1:
The blower nozzle is designed with a focused air jet pattern that concentrates airflow in a narrow stream directly at the debris location rather than dispersing it broadly. The nozzle angle and positioning are optimized to direct air downward into the rock crevices where debris is trapped, providing sufficient agitation to loosen debris while the concentrated nature of the jet prevents widespread rock movement and ejection from the rock bed.
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
These systems effectively remove deep debris from between rocks without ejecting rocks, reduce operator fatigue, and provide enhanced control and reach, making them more efficient and comfortable to use.
Implementation Method 1
provide air penetration deeply into cracks between rocks in decorative rock beds, in agitating rocks sufficiently enough to loosen leaves, dirt, and other debris
Implementation Method 2
vacuum systems can be used to skim the easy, loose debris off the top of rock bed, in addition to removing debris that is deep and/or stuck to or between rocks
Data Source
AI summary
Systems and methods for maintaining landscape features. Exemplary landscape maintenance systems include an air flow generation mechanism such as a vacuum and/or blower, a wand assembly having a forearm cuff assembly and a joystick handle assembly, and a nozzle assembly having an agitator assembly. The agitator assembly may include one or more spines or leaflets. The air flow generation mechanism may include a port in fluid communication with the wand assembly. The air flow generation mechanism may also include a port in fluid communication with an exhaust conduit, the exhaust conduit may be attached with a receptacle bag, and the receptacle bag may have a bag frame disposed therein.