Cane Retrieving Tip Foot-Operated Clamping Mechanism
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Solution Overview
Problem
Existing cane and walking stick retrieval devices are inadequate for picking up non-vertical objects like credit cards or currency, as they require a pinching action that is not suitable and often need frequent maintenance and assembly, making them impractical for users who struggle with balance and dexterity.
Innovation Solution
A retrieving tip assembly comprising an elastomeric body with a conical shape, a metal disk for cut-through protection, a sliding finger mechanism, and a knob for secure attachment to the cane or walking stick, allowing for a foot-operated clamping action to retrieve objects without assistance, designed to accommodate various object sizes and prevent slipping on wet surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a pinching type action device is used to retrieve objects, then the device can pick up objects with vertical height, but it cannot effectively retrieve thin flat objects like credit cards or currency
Solution Approach 1:
The patent changes the retrieval mechanism from a pinching action to a clamping action. The retrieving tip includes a clamp that can be positioned over the object and secured by rotating a knurled ring, which drives a threaded rod to move the clamp downward. This clamping mechanism applies force to the top surface of objects, making it effective for both vertical objects and thin flat objects like credit cards that cannot be effectively pinched.
2Adaptability or versatility
If complex retrieval devices with multiple moving parts are used, then they can retrieve various objects, but they require frequent maintenance, lubrication, and mechanical adjustments
Solution Approach 1:
The patent extracts the complex mechanical components from the retrieving device. The mechanism includes a knurled ring with internal threads that engages with a threaded rod, eliminating the need for separate gears, springs, or lubricated joints. The elastomeric body provides friction-based engagement with the cane shaft, removing the need for threaded fasteners or locking mechanisms. This simplified design reduces maintenance requirements while maintaining retrieval functionality.
Solution Approach 2:
The retrieving tip is designed to be self-assembling and self-retaining. The elastomeric body friction-fits onto the cane shaft, and the knurled ring threads onto the finger assembly without requiring tools or additional fasteners. The design eliminates the need for lubrication, adjustment, or periodic maintenance, allowing users to simply attach and use the device immediately.
3Ease of operation
If traditional retrieval devices are used, then they can pick up objects, but they require manual dexterity and bending that users with balance issues cannot perform
Solution Approach 1:
The patent introduces the cane as an intermediary tool between the user and the object on the ground. The retrieving tip attaches to the cane, allowing the user to reach objects without bending. The foot-actuated mechanism uses the user's foot as a mediator to operate the retrieval function, eliminating the need for manual dexterity. The user simply steps on the actuator with their foot to deploy the clamp, retrieve the object, and release it, maintaining balance throughout the operation.
4Ease of manufacture
If a simple attachment mechanism is used for the retrieving tip, then assembly is easy, but the connection may not be secure or stable
Solution Approach 1:
The elastomeric body is designed with a friction-fit interface that self-assembles onto the cane shaft. The elastomeric material provides sufficient friction to secure the connection without requiring screws, adhesives, or other fastening mechanisms. The knurled ring threads onto the finger assembly with hand-tightening, providing a secure connection without tools. This self-service assembly method achieves both ease of manufacture and connection security.
Data Source
AI summary
A retrieving tip for a cane or walking stick that provides the user a means to retrieve objects from a walking surface. The device employs a single moveable finger contained within the tip that can be extended for use with the user's foot. The finger when extended may be guided by the user to slip beneath an object to be retrieved and secured between the finger and tip body when the cane or walking stick is pushed downward against the walking surface. The tip may be furnished on new canes and walking sticks or as a replacement tip on existing canes or walking sticks. No maintenance or adjustments are required.