Ligature Resistant Wardrobe for Specialized Environments

Publication ID: 24-11857476_0009_PTD
Published: October 28, 2025
Category:Specialized Variations & Niche Solutions

Legal Citation

pr1or.art Inc., “Ligature Resistant Wardrobe for Specialized Environments,” Published Technical Disclosure No. 24-11857476_0009_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857476_0009_PTD
This technical disclosure describes improvements that would be readily apparent to a Person Having Ordinary Skill In The Art (PHOSITA) when considered in combination with the foundational architecture disclosed in U.S. Patent No. 11,857,476.

Summary of the Inventive Concept

A modular, adaptive, and secure wardrobe system designed for high-security institutional settings, disaster relief, and extreme weather conditions, providing a ligature-resistant and contraband-free storage solution.

Background and Problem Solved

The original patent for a ligature-resistant wardrobe addressed the need for secure storage in institutional settings. However, it did not account for the unique challenges posed by high-security environments, disaster relief situations, or extreme weather conditions. The new inventive concept adapts the original design to address these specific challenges, providing a more comprehensive and adaptable solution.

Detailed Description of the Inventive Concept

The new inventive concept comprises a modular, portable wardrobe system with a sloped top and ligature-resistant hanger engagement. It features a contraband barrier, weather-resistant coating, and tamper-evident locking means. The system can be easily assembled and disassembled for transportation and storage, making it ideal for disaster relief settings. Additionally, the wardrobe includes a plurality of fastener holes in the back panel for secure attachment to walls or floors, ensuring stability in extreme weather conditions.

Novelty and Inventive Step

The new inventive concept introduces novel features such as weather-resistant coatings, portable modular designs, and tamper-evident locking means, which are not present in the original patent. These features provide a significant improvement in security, adaptability, and functionality, making the new inventive concept non-obvious and innovative.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept could include variations in the material used for the wardrobe, such as using lightweight yet durable materials for disaster relief settings. Other variations could include integrating sensors or monitoring systems to detect potential security breaches or environmental hazards.

Potential Commercial Applications and Market

The new inventive concept has significant commercial potential in the high-security institutional setting market, disaster relief industry, and extreme weather condition markets. The adaptive and modular design makes it an attractive solution for government agencies, non-profit organizations, and private companies operating in these environments.

CPC Classifications

SectionClassGroup
A A61 A61G7/047
A A47 A47C19/22
A A47 A47C31/00
A A61 A61G7/05

Field of Art

Institutional furniture design, specifically high-security environments like prisons, psychiatric facilities, and disaster relief settings, focusing on safety-critical furniture with anti-ligature and contraband prevention features

Person of Ordinary Skill (PHOSITA) Profile

A design engineer with expertise in institutional furniture, understanding safety requirements for high-risk environments, familiar with materials science, structural engineering, and security design principles

Obviousness Rationale

A person of ordinary skill would recognize that extending the source patent's ligature-resistant wardrobe design to include modular, portable, and weather-resistant features represents predictable variations within the known design space of institutional furniture. The core safety mechanisms remain consistent while adding functional adaptability through known engineering techniques. These modifications represent standard design iterations that would be apparent to a skilled practitioner seeking to improve institutional furniture functionality.

Obvious Combinations & Variations

Source Patent Element
Ligature-resistant wardrobe with recessed hanger pocket
PTD Variation
Adding weather-resistant coating and modular design for disaster relief applications
Obviousness Reasoning
Adapting institutional furniture materials for different environments is a predictable design choice using known protective coating technologies
Source Patent Element
Fastener holes in back panel for wall attachment
PTD Variation
Extending attachment options to include floor mounting and adding tamper-evident locking mechanisms
Obviousness Reasoning
Expanding mounting options represents a routine engineering adaptation addressing different installation requirements
Source Patent Element
One-piece cabinet design with sloped top
PTD Variation
Creating a portable, easily assembled/disassembled modular wardrobe system
Obviousness Reasoning
Transforming fixed institutional furniture into transportable configurations is an obvious solution for mobile or temporary environments
Source Patent Element
Contraband barrier integrated into shelf design
PTD Variation
Incorporating sensor or monitoring systems to detect potential security breaches
Obviousness Reasoning
Adding electronic monitoring to physical security features represents a standard technological enhancement in high-security design
Source Patent Element
Ligature-resistant clothes hanger support
PTD Variation
Using lightweight, durable alternative materials for improved portability
Obviousness Reasoning
Material substitution for improved performance is a standard engineering approach with predictable design outcomes
35 U.S.C. § 103 Summary: Based on US Patent 11857476's teachings, the present publication demonstrates that the claimed variations in institutional furniture design represent obvious extensions of existing anti-ligature wardrobe technologies. A person having ordinary skill in the art would find the disclosed modifications to be predictable adaptations within the known design space, thereby rendering potential claims to such variations unpatentable under 35 U.S.C. ยง 103.

Original Patent Information

Patent NumberUS 11,857,476
TitleLigature resistant wardrobe
Assignee(s)Norix Group, Inc