Interlocking Telescopic Rod Defense Spray Apparatus
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Solution Overview
Problem
Conventional self-defense sprays are limited in range and duration, and when depleted, they become ineffective against attackers, necessitating the use of alternative defense tools like umbrellas or canes, which may not provide sufficient protection.
Innovation Solution
An interlocking telescopic rod-type defense spray apparatus that combines a self-defense spray with a rod-type object, allowing for the sequential use of irritant gas and a rod for defense, with a telescopic-rod packing device enabling the rod to lock and unlock positions to facilitate both gas spraying and rod extension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a conventional self-defense spray device is used, then the spray can be discharged at a long distance to temporarily blind the attacker, but the spray duration is very short and becomes useless when the can is depleted
Solution Approach 1:
The patent combines a self-defense spray device with a rod-type object (umbrella, staff, or cane) into a single integrated apparatus. The spray can is disposed inside the rod-type object, allowing the user to have both the spray function and the physical defense function in one device. This merging resolves the contradiction by providing extended protection duration through the physical rod component that remains effective after the spray is depleted.
Solution Approach 2:
The integrated device serves multiple functions: it can be used as a spray device for chemical defense, as a rod-type object for physical blocking or striking, and as a portable carrying device. The rod-type object housing can be configured as an umbrella, staff, or cane, each providing different defensive capabilities. This multi-functionality extends the overall duration and versatility of self-protection beyond what a spray can alone can provide.
2Weight of moving object
If a small-volume self-defense spray can is used for portability, then the device is easy to carry, but the dosage of irritant gas is limited and can support only a few spurting times
Solution Approach 1:
The patent merges the spray can with a rod-type object that has its own defensive value. Even though the spray can volume remains small for portability, the rod-type object (umbrella, staff, or cane) provides additional defensive capability that compensates for the limited spray dosage. The user can switch from spray to physical defense when the can is depleted.
Solution Approach 2:
The device provides multiple defensive functions in a portable form factor. The rod-type object component (which can be an umbrella, staff, or cane) offers physical defense, blocking, or striking capabilities, while the spray can provides chemical defense. This multi-functionality allows the device to maintain portability while effectively extending the overall protection duration and reducing the critical impact of limited spray dosage.
3Adaptability or versatility
If the spray can is emptied after several spurting times, then portability is maintained, but the device becomes ineffective and requires switching to alternative defense tools
Solution Approach 1:
The patent integrates the spray can and rod-type object into a single unified apparatus, eliminating the need to switch between separate devices. The rod-type object is disposed within or around the spray can assembly, creating a cohesive structure where both components are always available. This integration maintains defense function continuity without requiring the user to carry or switch to alternative tools.
Solution Approach 2:
The device is designed to perform multiple defensive functions seamlessly. The rod-type object can be configured as an umbrella, staff, or cane, each providing different defensive capabilities. The transition from spray function to physical defense function is built into the device structure, allowing the user to maintain continuous protection without switching to a different device, thereby managing the complexity through unified design.
4Strength
If a rod-type object is used for physical defense, then it can be used to strike or block attacks, but it lacks the ranged spray function to temporarily disable the attacker
Solution Approach 1:
The patent combines the rod-type object with the spray can into a single integrated apparatus. The rod-type object provides physical defense through blocking or striking, while the spray can provides ranged chemical defense. By merging these two previously separate defense tools into one device, the user gains both close-range physical protection and mid-range spray capability without needing to carry multiple separate items.
Solution Approach 2:
The integrated device offers multiple defensive functions: the rod-type object component (umbrella, staff, or cane) provides physical blocking and striking capabilities for close-range defense, while the spray can component provides ranged irritant gas discharge for mid-range defense. This multi-functionality allows the user to adapt to different attack scenarios and distances, enhancing overall defense versatility while maintaining a single portable device.
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
Enhances safety by providing a dual protection mechanism where irritant gas can be used initially, followed by the rod for defense, and the device can be disguised as a common object for portability and stealth.
Implementation Method 1
a compression elastic piece disposed between the press-ring portion and the step through hole
Implementation Method 2
a telescopic-rod packing device between the two tube pieces, an upper seat of the telescopic-rod packing device being fixedly connected to the upper tube, a lower seat being fixedly connected to the lower tube
Implementation Method 3
the packing ring and enables a thick wall of the packing ring to radially protrude from the rod body portion on a side of the eccentric shaft to tightly abut a corresponding inner wall surface of the first tube body
Data Source
AI summary
An interlocking telescopic rod-type defense spray apparatus includes: a first tube body, a cap and a second tube body. The first tube body has a receiving chamber for placing an irritant gas can. The cap covers the receiving chamber. A rod body portion of the second tube body includes an upper tube, a lower tube, and a telescopic-rod packing device connecting the upper tube and the lower tube. Two sectioned tube pieces and a spring pin component and a push joint component between the two tube pieces are applied to lock and unlock a relative position relationship between the two tube pieces, so that the defense spray apparatus has composite functions of a rod-piece additional function of a locking configuration of relative positions of the two tube pieces and a press-lever spray irritant gas can of an unlocking configuration of the relative positions of the two tube pieces.