Wireless Deadman Assembly for Hose-Free Abrasive Blasting Control
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Solution Overview
Problem
Conventional abrasive blasting remote control systems require additional pneumatic hoses or electrical cords, which create obstacles, hazards, and are prone to damage, limiting their effectiveness and safety in sandblasting operations.
Innovation Solution
A wireless remote deadman switch assembly for abrasive blasting equipment that uses a shroud with a momentary deadman switch and a wireless transmitter circuit board to control airflow and media feed without the need for additional hoses or wires, featuring a spring biased interlock safety switch and a membrane gasket for protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional pneumatic remote control systems are used, then the blasting equipment can be controlled remotely, but additional pneumatic hoses are required which create obstacles, hazards, and are prone to damage
Solution Approach 1:
The patent removes the pneumatic hose connection requirement by extracting the control function from the pneumatic system and implementing it through a wireless electronic system. The remote control unit communicates with the blasting pot via wireless transmission, eliminating the need for additional pneumatic hoses that create obstacles and hazards.
Solution Approach 2:
The patent replaces the mechanical pneumatic control system with an electronic wireless control system. Instead of using pneumatic signals transmitted through hoses, the system uses electronic circuits and wireless communication to transmit control signals from the remote control unit to the blasting pot, thereby eliminating the mechanical hose connections.
2Ease of operation
If wired remote control systems are used, then control signals can be transmitted over distance, but electrical cords create trip hazards and are subject to damage
Solution Approach 1:
The patent removes the electrical cord connection by extracting the control function from the wired system and implementing it through wireless communication. The remote control unit transmits control signals wirelessly to the blasting pot, eliminating the electrical cord that creates trip hazards and vulnerability to damage.
Solution Approach 2:
The patent replaces the electrical wired control system with a wireless electronic control system. Instead of transmitting control signals through electrical cords, the system uses wireless transmission technology to communicate between the remote control unit and the blasting pot, eliminating the physical cord connections and associated hazards.
3Object-affected harmful factors
If pneumatic hoses are extended to increase working distance, then operator safety is improved, but the hoses become more prone to damage and performance degradation
Solution Approach 1:
The patent replaces the pneumatic hose transmission system with a wireless electronic communication system. This substitution allows the operator to control the blasting equipment from any distance within wireless range, improving safety without the reliability issues associated with extended pneumatic hoses. The wireless system eliminates the physical constraints and vulnerability of hose-based control.
Data Source
AI summary
The present disclosure provides for an abrasive blasting remote assembly having a shroud and a deadman lever pivotally connected to the shroud. The deadman lever is pitoval between a closed operating position and a released position. In the closed operating position, the deadman ever engages a momentary deadman switch disposed within the shroud. The momentary deadman switch is electrically connected to a wireless transmitter circuit board, which sends a wireless operational signal to a blasting pot wireless receiver to activate airflow through a blasting hose from a blasting pot, for the movement of abrasive media through the blasting hose, when the deadman lever depresses the momentary deadman switch in the closed operating position.