Equal-Arm Tissue Roll Clamp for Even Load Distribution
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Solution Overview
Problem
Conventional tissue roll clamps with unequal-length clamp arms cause significant deformation and damage to low-density tissue rolls due to uneven weight distribution between the clamping surfaces, leading to pressure concentrations and unbalancing, especially when handling rolls in different orientations.
Innovation Solution
Employing equal-length clamp arms with convexly or shallowly concavely curved clamping surfaces, which maintain equal elevations during various orientations to evenly distribute the weight and reduce deformation, eliminating the need for a rotator assembly and allowing for damage-free handling of both large and small diameter rolls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a clamp is designed to accommodate different sized tissue rolls by adjusting clamp arms, then adaptability is improved, but the adjustment mechanism becomes complex and may fail
Solution Approach 1:
The clamp is divided into two separate clamps, each with a fixed jaw and a movable jaw. Each clamp can independently accommodate different tissue roll sizes without requiring complex adjustment mechanisms across a single unified structure. This segmentation allows each clamp to be simpler while maintaining overall system adaptability.
Solution Approach 2:
The clamps are designed with different fixed jaw widths to accommodate different tissue roll sizes. Instead of using adjustable mechanisms to change parameters, the patent provides multiple clamp configurations with fixed parameters that match specific tissue roll dimensions, eliminating the need for complex adjustments.
2Device complexity
If a single clamp is used for all tissue roll sizes, then device complexity is reduced, but manufacturing precision and reliability deteriorate due to inability to accommodate size variations
Solution Approach 1:
The pair of clamps functions as a universal system that can handle multiple tissue roll sizes. Each clamp is optimized for specific size ranges, and together they provide broad coverage. This multi-functional approach maintains manufacturing precision for each size while keeping individual clamp structures simple.
Solution Approach 2:
By dividing the single clamp into two separate clamps with different fixed jaw widths, the system achieves precision for multiple tissue roll sizes. Each clamp is manufactured with precise fixed dimensions suited to specific roll sizes, eliminating the precision losses that would occur in a single adjustable clamp.
3Adaptability or versatility
If adjustable clamps are used to fit different tissue rolls, then adaptability is improved, but reliability deteriorates due to potential mechanism failure
Solution Approach 1:
The system uses multiple fixed-clamp configurations instead of a single adjustable clamp. Each clamp has a fixed jaw width optimized for specific tissue roll sizes, eliminating movable adjustment mechanisms that could fail. This segmentation provides reliability through simplicity while maintaining adaptability through having multiple clamp types available.
Solution Approach 2:
The patent describes providing a pair of clamps for different sized tissue rolls, implying that simpler, potentially disposable or replaceable clamp units are used rather than investing in a complex, long-lived adjustable mechanism. This approach prioritizes reliability through simplicity over long-term durability of complex mechanisms.
Data Source
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AI summary
A tissue roll handling clamp, mountable on a vehicle such as a lift truck, has elongate, substantially equal-length, thin clamp arms with opposed tissue-engagement clamping surfaces. The clamp arms are capable of movement in unison by a frame assembly to alternative positions where the clamp arms extend longitudinally from the frame assembly selectively in either substantially horizontal or substantially vertical directions of extension. The frame assembly is capable of maintaining the respective clamping surfaces at substantially equal elevations to each other during such movement to substantially equalize the distribution of the weight of a clamped tissue roll between the opposed tissue-engagement clamping surfaces.