Tree Anchor Attachment With Low-Friction Retrieval Loop
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Solution Overview
Problem
Existing tree care friction savers often get stuck in trees due to friction forces, making retrieval difficult.
Innovation Solution
An attachment device comprising a wire-like element, a clamp, and a cord with specific cross-sections and configurations to facilitate easy installation and retrieval, including a rotatable roller and grooves for reduced friction and controlled loop opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a friction saver with a strap and metal rings is used to form an anchor point, then the anchor point can be securely attached to the tree, but the friction saver remains stuck in the tree due to friction forces between the tree, strap and work rope
Solution Approach 1:
The invention divides the attachment device into separate functional components: a friction saver for attachment and a retrieval device with a retrieval ball. This segmentation allows the attachment function to remain reliable while the retrieval function operates independently through the ball passing through rings to open the loop.
Solution Approach 2:
The retrieval ball acts as an intermediary element that facilitates the opening of the sliding loop. When pulled through the work rope, it transfers force to the second end of the strap, causing the loop to open and the friction saver to be released from the tree.
2Ease of operation
If the second ring has a smaller internal dimension than the first metal ring, then the retrieval ball can be stuck in the second ring to open the sliding loop, but the friction forces between tree, strap and work rope cause the friction saver to remain stuck
Solution Approach 1:
The invention extracts the retrieval function from the original friction saver design by adding a separate retrieval ball and retrieval rope system. This allows the retrieval mechanism to operate independently, pulling the friction saver away from the tree through the work rope without being hindered by friction forces.
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
The device ensures easy and reliable attachment and retrieval by minimizing friction and jamming, enhancing safety and efficiency in tree care operations.
Implementation Method 1
the clamp has a roller fitted in rotatable manner, the roller forming one edge of the through hole
Data Source
AI summary
An attachment device to an anchor point comprises a wire-like element provided with two ends a first end of which has a first ring. A clamp has two ends a first end of which can be inserted in the first ring. The second clamp end presents a second cross-section larger than the first cross-section. The first clamp end defines a through hole receiving a rope supporting a user. The second end of the wire-like element is fixed to the clamp via a first attachment point between the through hole and the second clamp end. A cord has a first end fixed to the clamp via a second attachment point and a second end with a second ring.