Repellent Spray Dispenser With Dual Alarm and Discharge Actuation
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Solution Overview
Problem
Existing personal safety devices, such as pepper spray canisters, lack safety features and are difficult to aim accurately, and resemble firearms, which may deter users who prefer non-lethal options without the appearance of a firearm.
Innovation Solution
A repellent spray dispenser with a case containing a canister, an exit orifice, and dual actuating members for propelling a non-lethal repellent and generating an audible alarm, allowing simultaneous or independent activation of the alarm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional pepper spray canisters are used, then they can deploy repellent, but they lack safety features and are difficult to accurately aim
Solution Approach 1:
The device is divided into distinct functional components: a safety cover that must be removed before use, a trigger mechanism for controlled discharge, and an audible alarm system. This segmentation allows each component to perform its specific function reliably while maintaining overall safety and usability.
Solution Approach 2:
The safety cover must be removed in advance before the device can be used. This preliminary action ensures that the user has consciously decided to use the device and prevents accidental discharge, while also preparing the device for accurate aiming and controlled operation.
2Adaptability or versatility
If pepper spray canisters are used, then they can defend against attackers, but they resemble firearms and users prefer non-lethal alternatives that do not look like firearms
Solution Approach 1:
The device combines multiple functions into a single unit: it can deploy pepper gel repellent, generate audible alarms, and be configured in different appearances. This multi-functionality allows the device to provide effective protection while adapting to user preferences regarding appearance, making it suitable for various situations and user comfort levels.
3Ease of operation
If conventional pepper spray canisters are used, then they can deploy repellent, but they require multiple mental steps to activate alarm and repellent
Solution Approach 1:
The alarm function and repellent discharge function are merged into a single triggered action. When the trigger is pulled, both the alarm sounds and the pepper gel is deployed simultaneously. This eliminates the need for multiple separate actions or mental steps, reducing activation time and simplifying the operation during a confrontation.
4Adaptability or versatility
If pepper spray canisters are used, then they can deploy repellent, but they lack additional protection features
Solution Approach 1:
The device integrates multiple protective features including pepper gel repellent deployment, audible alarm generation, and safety cover protection. These diverse functions are unified within a single integrated structure that manages complexity through thoughtful design, allowing the device to provide comprehensive protection without becoming overly complicated or difficult to operate.
Data Source
AI summary
Repellent spray dispensers and methods of their use. Such a repellent spray dispenser includes a case configured to enclose a canister containing a repellent, an exit orifice configured so that a stream of the repellent propelled from the canister exits the case through the exit orifice, an audible alarm, a first actuating member operable to cause the audible alarm to be generated simultaneously with the stream of the repellent being propelled through the exit orifice of the case, and a second actuating member operable to cause the audible alarm to be generated without causing the stream of the repellent to be propelled through the exit orifice of the case.