Sleeping Bag with Integrated Quilt to Reduce Cold Spots and Bulk

Solution Overview

Problem

Existing sleeping bags face issues such as cold spots around the edges, inefficient insulation due to compression and separation, and added weight and bulk from extra insulation, making them cumbersome for outdoor use.

Innovation Solution

A sleeping bag with an integrated quilt that securely covers less insulated areas, such as the bottom hem and zipper, using attachment points like buckles or snaps, and varying the direction of seams and insulation chambers to enhance efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If additional insulation is added to the top and bottom layers of the sleeping bag, then warmth and comfort are improved, but the sleeping bag becomes heavy and bulky

Engineering Contradiction:

ImprovewarmthVSAvoidweight

Core Design Contradiction:

TemperatureVSWeight of moving object

Solution Approach 1:

The patent applies local quality by adding insulation only to specific cold spots (bottom hem, zipper areas, and top layer) rather than uniformly throughout the sleeping bag. This targeted approach provides warmth where most needed while minimizing overall weight and bulk.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The sleeping bag is segmented into distinct insulation zones: an integrated quilt layer for top warmth, bottom insulation for cold spot coverage, and selective insulation at zipper areas. This segmentation allows efficient heat retention without requiring the entire bag to be heavily insulated.

Inventive Principle:

Principle #1Segmentation

2Temperature

If additional insulation is added to the top and bottom layers of the sleeping bag, then warmth and comfort are improved, but the sleeping bag becomes bulky

Engineering Contradiction:

ImprovewarmthVSAvoidbulk

Core Design Contradiction:

TemperatureVSVolume of moving object

Solution Approach 1:

The patent applies local quality by adding insulation only to specific cold spots (bottom hem, zipper areas, and top layer) rather than uniformly throughout the sleeping bag. This targeted approach provides warmth where most needed while minimizing overall weight and bulk.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The sleeping bag is segmented into distinct insulation zones: an integrated quilt layer for top warmth, bottom insulation for cold spot coverage, and selective insulation at zipper areas. This segmentation allows efficient heat retention without requiring the entire bag to be heavily insulated.

Inventive Principle:

Principle #1Segmentation

3Temperature

If blankets are added to a sleeping bag for colder weather, then warmth is improved, but the blanket may slide off during the night

Engineering Contradiction:

ImprovewarmthVSAvoidstability

Core Design Contradiction:

TemperatureVSReliability

Solution Approach 1:

The patent merges the blanket function directly into the sleeping bag structure by integrating a quilt layer with attachment points (snaps, buttons, or Velcro) that secure it to the sleeping bag. This combination ensures the warmth layer remains stable and cannot slide off during use.

Inventive Principle:

Principle #5Merging (Combining)

4Temperature

If insulation is added equally to the bottom layer and top layer, then warmth is improved, but the bottom layer insulation becomes compressed by body weight

Engineering Contradiction:

ImprovewarmthVSAvoidinsulation efficiency

Core Design Contradiction:

TemperatureVSReliability

Solution Approach 1:

The patent applies local quality by concentrating insulation in the top layer and at specific cold spots rather than distributing it equally throughout. This prevents compression of bottom insulation while maintaining warmth where the user's body cannot provide natural insulation.

Inventive Principle:

Principle #3Local quality

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 integrated quilt provides additional warmth and comfort by covering cold spots and improving insulation efficiency, while also reducing weight and bulk, making the sleeping bag more versatile and convenient for outdoor use.

Implementation Method 1

the integrated quilt may be large enough to cover areas on the sleeping bag with less insulation such as the bottom hem and/or zipper

Methodology Applied

Scientific EffectThermal insulation: Thermal Insulation

Implementation Method 2

the seams and/or insulation chambers of the quilt and the seams and/or insulation chambers of the sleeping bag may be disposed at an angle relative to the seams and/or insulation chambers of the sleeping bag

Methodology Applied

Scientific EffectThermal insulation: Thermal Insulation

Data Source

PatentUS12285128B2Sleeping bag with integrated quilt

Publication Date: 2025.04.29 BRIGHT PATH ENTERPRISES LLC

AI summary

The sleeping bag assembly may include a sleeping bag, one or more connecting portions, and a quilt. Advantageously, the quilt may be configured to drape over the top of the sleeping bag and cover the less insulated areas of the sleeping bag. The quilt may be configured to be coupled to the sleeping bag via the one or more connecting portions and the connecting portions may keep the quilt on top of the sleeping bag during use. The quilt may also be sized and configured to form a seal about a portion of the sleeping bag, which may increase heat retention and efficiency of the sleeping bag by covering the areas of the sleeping bag that are more susceptible to heat loss, including but not limited to areas that may lack insulation, where the insulation is compressed, and/or where the insulation is separated.