Intelligent Load-Adaptive Bed with Optimized Actuator Output

Publication ID: 24-11857474_0001_PTD
Published: October 28, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Intelligent Load-Adaptive Bed with Optimized Actuator Output,” Published Technical Disclosure No. 24-11857474_0001_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857474_0001_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. 11,857,474.

Summary of the Inventive Concept

A hi-low bed system featuring a load transfer assembly with adaptive cam surface friction coefficient and/or geometric profile, ensuring optimal actuator load output and efficient bed movement, regardless of the load.

Background and Problem Solved

The original patent for a hi-low bed with a load transfer assembly, although innovative, had limitations in its ability to efficiently handle varying loads. The new inventive concept addresses this issue by introducing adaptive mechanisms that optimize the actuator load output, ensuring a smoother and more efficient bed movement experience.

Detailed Description of the Inventive Concept

The intelligent load-adaptive bed features a load transfer assembly comprising a pivot arm and a cam arm, with the cam arm having a dynamic friction coefficient that adjusts in response to changes in the bed's load. This adaptation ensures optimal actuator load output, reducing the strain on the actuator and promoting efficient bed movement. Additionally, the bed system can include a sensor for detecting the bed's load, allowing for real-time adjustments to the actuator load output. In alternative embodiments, the cam surface's geometric profile can change in response to the bed's load, or a mechanical advantage mechanism can be integrated to amplify the actuator load output.

Novelty and Inventive Step

The new inventive concept's adaptive mechanisms, which adjust the cam surface's friction coefficient and/or geometric profile in response to changes in the bed's load, constitute a non-obvious improvement over the original patent. These innovations enable the bed to efficiently handle varying loads, providing a smoother and more efficient bed movement experience.

Alternative Embodiments and Variations

Other implementations of the inventive concept could include using different types of sensors to detect the bed's load, integrating machine learning algorithms to predict and adapt to changing load conditions, or incorporating additional mechanisms to further optimize the actuator load output. These variations would ensure broad conceptual coverage and flexibility in the design.

Potential Commercial Applications and Market

The intelligent load-adaptive bed has significant commercial potential in the healthcare and hospitality industries, where efficient and safe bed movement is crucial. The inventive concept's ability to optimize actuator load output and provide a smoother bed movement experience can improve patient care, reduce the risk of injury to caregivers, and enhance the overall user experience in hospitals, nursing homes, and luxury hotels.

CPC Classifications

SectionClassGroup
A A61 A61G7/018
A A47 A47C19/021
A A61 A61G7/012

Field of Art

Medical and assistive furniture design, specifically adjustable beds with mechanical load transfer systems, requiring expertise in mechanical engineering, biomechanics, and assistive technology design

Person of Ordinary Skill (PHOSITA) Profile

A mechanical engineer with 3-5 years experience in medical equipment design, familiar with load transfer mechanisms, actuator systems, and adaptive mechanical interfaces

Obviousness Rationale

A PHOSITA would recognize that the PTD's adaptive load transfer mechanisms represent predictable engineering variations of the source patent's fundamental cam arm and pivot arm design. The disclosed friction coefficient and geometric profile adjustments are logical extensions of existing mechanical principles for optimizing load transfer in adjustable bed systems. These modifications represent standard design optimization strategies that would be apparent to a skilled practitioner seeking to improve bed movement efficiency.

Obvious Combinations & Variations

Source Patent Element
Cam arm with stationary cam surface connected to main frame
PTD Variation
Dynamic friction coefficient cam surface that adjusts based on load detection
Obviousness Reasoning
Predictable design optimization using known sensor and material science techniques to modify surface interaction characteristics
Source Patent Element
Pivot arm connected between support frame and cam arm
PTD Variation
Integrated load sensing mechanism within pivot arm to dynamically adjust actuator output
Obviousness Reasoning
Standard mechatronic design approach of adding sensing capabilities to existing mechanical components
Source Patent Element
Nonlinear slot in cam arm for load transfer
PTD Variation
Cam surface geometric profile that changes dynamically in response to load conditions
Obviousness Reasoning
Finite set of predictable geometric modifications to optimize mechanical advantage and load transfer efficiency
Source Patent Element
Load transfer assembly with pivot and cam arms
PTD Variation
Mechanical advantage mechanism integrated to amplify actuator load output
Obviousness Reasoning
Well-known mechanical engineering technique for enhancing force transmission in mechanical systems
35 U.S.C. § 103 Summary: Based on US Patent 11857474's foundational load transfer assembly design, the present publication demonstrates that the claimed variations in cam surface dynamics, load sensing, and mechanical advantage represent obvious engineering modifications that would be readily conceived by a person having ordinary skill in medical equipment design. The disclosed technical variations constitute prior art rendering obvious any subsequent patent claims covering substantially similar adaptive bed movement mechanisms.

Original Patent Information

Patent NumberUS 11,857,474
TitleBed that is movable from a low position to a high position with a load transfer assembly
Assignee(s)GF Health Products, Inc.