Sheet Assembly for Use with a Mattress in a Correctional Facility

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Solution Overview

Problem

Correctional facilities face the challenge of preventing sheets from being used as weapons for self-harm or harming others, as they can be twisted into ropes, which is a common occurrence leading to suicides.

Innovation Solution

A sheet assembly comprising a mattress section with overlapping sheets connected along multiple sides and a cover section attached via a seam, allowing the cover to move between open and closed orientations, making it difficult to transform into a weapon.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional separate sheets are used on mattresses, then ease of operation and comfort are improved, but safety is worsened due to the ability to transform sheets into weapons

Engineering Contradiction:

Improveease of useVSAvoidsafety risk

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent combines multiple separate sheets (mattress sheet, top sheet, and blanket) into a single integrated sheet assembly that cannot be easily separated or transformed into weapons. The sheets are connected through overlapping edges and secured with fasteners to form one bulky unit, eliminating the ability to twist them into rope-like weapons while maintaining comfort and functionality.

Inventive Principle:

Principle #5Merging (Combining)

2Object-affected harmful factors

If sheets are integrated into a single bulky unit, then safety is improved by preventing weapon formation, but device complexity increases

Engineering Contradiction:

Improvesafety riskVSAvoidstructural complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The sheet assembly is divided into distinct functional segments (mattress sheet portion, top sheet portion, and blanket portion) that are connected through overlapping edges. Each segment maintains its specific function while being integrated into a unified structure that prevents weapon formation. The segmented design allows for easier manufacturing and assembly while achieving the safety goal.

Inventive Principle:

Principle #1Segmentation

3Object-affected harmful factors

If multiple sheets are connected together, then safety is improved by reducing manipulability, but ease of manufacture deteriorates

Engineering Contradiction:

Improvesafety riskVSAvoidmanufacturing ease

Core Design Contradiction:

Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The sheets are designed with pre-formed overlapping edges and integrated fasteners that are incorporated during manufacturing. This preliminary preparation of connection mechanisms simplifies the assembly process and ensures consistent safety features across all products. The overlapping edges are constructed to automatically align and secure the multiple sheet layers together.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20220218128A1Sheet Assembly for Use with a Mattress in a Correctional Facility

Publication Date: 2022.07.14 BOB BARKER

AI summary

A sheet assembly for use with a mattress in a correctional institution. The sheet assembly includes a mattress section with a pair of overlapping sheets that are connected together along at least two sides and that form an interior space sized to contain the mattress and a cover section that includes a single sheet. A seam extends along a common side of each of the mattress section and the cover section with the seam connecting together the mattress section and the cover section. The cover section is movable relative to the mattress section between an open orientation away from the mattress section and a closed orientation that overlaps with the mattress section.