Hiking Pole Handle Assembly for Fast Pepper Spray Access
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Solution Overview
Problem
Existing pepper spray solutions for hiking poles often lead to accidental discharge due to unintuitive activation mechanisms and potential jamming, making it difficult for users to access the spray quickly during an emergency.
Innovation Solution
A handle assembly for hiking poles that securely stores a pepper spray canister with a snap-fit cap and lever-activated nozzle, allowing for quick and intuitive deployment by rotating a lever arm to an active position and pressing it to dispense the spray.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pepper spray is stored in a pack (daypack, backpack, waist pack), then the hiker can carry the spray, but the hiker may not be able to access it quickly before being overtaken by an assailant
Solution Approach 1:
The patent combines the pepper spray canister with the hiking pole handle, integrating two separate items (spray container and walking aid) into a single unified device. This merging eliminates the need to separately carry the spray in a pack while maintaining quick access through the handle's integrated design.
Solution Approach 2:
The patent transitions the spray storage from a pack-based solution (3D volume storage) to a handle-integrated solution (linear/compact storage along the pole). This dimensional reorganization allows the spray to be positioned within reach of the hand holding the pole, dramatically improving access speed during an emergency.
2Reliability
If pepper spray is placed in the handle of a walking stick or pole, then quicker access is achieved, but the hiker risks accidentally pressing the trigger/nozzle and discharging it
Solution Approach 1:
The patent incorporates a safety cap that must be removed before the spray can be activated. This preliminary action (cap removal) serves as a deliberate first step that prevents accidental discharge, while still allowing rapid subsequent activation when needed.
Solution Approach 2:
The safety cap acts as an intermediary barrier between the trigger mechanism and the user's finger. This intermediate component must be removed or moved before the trigger can be pressed, adding a layer of protection against accidental activation while maintaining quick access capability.
3Object-affected harmful factors
If a cover is placed over the nozzle that must slide or flip before the nozzle can be pressed, then accidental discharge is prevented, but the action becomes unintuitive and requires inordinate attention in a critical time of need
Solution Approach 1:
The patent extracts the safety function from the main activation mechanism by using a separate, easily removable cap. Instead of integrating the safety feature into the trigger press itself (which would complicate the action), the safety cap is a distinct component that can be quickly removed without requiring complex manipulation.
Solution Approach 2:
The safety cap functions as a single-use or occasionally-used component that is discarded or set aside after removal. This simple, low-complexity element provides effective safety protection without requiring the user to manipulate complex mechanisms during the actual spray activation.
4Object-affected harmful factors
If pivots points and slides are used in the cover mechanism, then the nozzle can be covered and exposed, but these components can become jammed or fail if not properly actuated
Solution Approach 1:
The patent removes the complex pivot and slide mechanisms from the cover system entirely. Instead of using a mechanical linkage that requires precise actuation, the safety cap is designed as a simple press-fit or snap-fit component that can be easily removed without any moving parts that could jam or fail.
Solution Approach 2:
The patent segments the safety function from the activation mechanism, using a separate cap component rather than an integrated moving cover. This segmentation eliminates the need for complex mechanical connections between the cover and the trigger assembly, reducing the risk of mechanical failure.
Data Source
AI summary
A handle assembly is described. Embodiments of the handle assembly can include a main body and a cap. The main body can be contoured to be gripped by a user and can include a chamber for receiving a canister of deterrent spray therein. The contour of the main body can generally index knuckles of a user holding the main body with a dispensing nozzle of a canister configured to dispense a deterrent. The cap can be removably coupled to the main body and can encapsulate the canister in the chamber. To dispense contents of the canister, a user may first pop the cap off to engage the canister, second the user can activate the canister, and third the user can dispense the contents of the canister.