PILLOW WITH ADJUSTABLE DENSITY

Description

1 / 5 PILLOW WITH ADJUSTABLE DENSITY FIELD OF THE INVENTION

[01] This invention patent describes a pillow with adjustable density. More specifically, it comprises an inflatable structure incorporating an inflatable chamber positioned within a body with a hollow central region, creating a niche for the inflatable chamber to be accommodated, avoiding uneven edges and differences in density. BACKGROUND OF THE INVENTION

[02] Pillows play a crucial role in ensuring comfort, support and proper spinal alignment during sleep. The ideal pillow should have specific characteristics adapted to individual needs, sleeping positions and health conditions.

[03] The choice of pillow material significantly affects comfort and support. Memory foam and latex pillows are often recommended for their ability to provide ideal pressure distribution and maintain cervical spine alignment, while inflatable pillows offer adjustment in firmness (Türkmen, C., Esen, SY, Erden, Z., & Düger, T. (2023). Comfort and Support Values ​​Provided by Different Pillow Materials for Individuals with Forward Head Posture. Applied Sciences, 13(6), 3865. (https: / / doi.org / 10.3390 / app13063865).

[04] Furthermore, pillows should be designed to support the natural curvature of the cervical spine. Neck support that aligns with the anterior convexity of the neck is essential for maintaining proper spinal alignment. A multi-sectional design can provide optimal support and minimize biological stress on the contact surface (Chen, J., Liu, B., Shen, T., Hou, W., & He, Y. Petition 870250028801, dated 10 / 04 / 2025, page 5 / 16 2 / 5 (2024). Biomechanical design optimization and experimental verification of Bezier curve based two-sectional cervical pillow with variable-density cellular structure. Computer Methods in Biomechanics and Biomedical Engineering, 1-11. https: / / doi.org / 10.1080 / 10255842.2024.2373934).

[05] Customization of pillows allows users to adjust their height and shape to accommodate individual preferences and sleeping positions. Inflatable designs or adjustable compartments facilitate this customization, adapting to the anthropometric measurements of the head, neck, and shoulder area to ensure adequate support.

[06] The state of the art describes inflatable pillows, such as MU7602223, which discloses a pillow covered in fabric or similar material, equipped with a polypropylene membrane or similar material that separates the pillow itself into two compartments: an upper compartment filled with polyester fiber or similar material and a lower compartment in polyvinyl or similar material, allowing its inflation and adjustment through a valve for the entry and exit of air, with chambers provided in the lower compartment to compensate for air movement obtained through simple welding, with gaps provided at the ends of said welds capable of reducing or eliminating air movement and escape, providing balance, resistance, better air distribution inside the lower inflatable compartment, limiting the maximum possible height with comfort and eliminating the occurrence of pain and contusions in the neck,head and spine of the user.

[07] Document PI9502612 describes an inflatable pillow with a valve system for air inlet and outlet. Petition 870250028801, dated 10 / 04 / 2025, page 6 / 16 3 / 5

[08] Document US20130014328 describes a pillow with areas of varying firmness.

[09] Although pillows have incorporated technological features that combine ergonomic design, adjustable firmness and material selection adapted to individual needs and sleeping positions, proper spinal alignment and pressure distribution should be prioritized. Areas of variable firmness can provide personalized support for different users, but comfort should be considered, allowing adjustments that provide dynamic support for different sleeping positions and preferences.

[010] Inflatable pillows allow for height and pressure adjustments through air valves and equalization devices. However, the inflatable chamber, even when covered by an upper filling compartment, does not provide adequate comfort. This is because the lower inflatable compartment tends to expand in the central portion, creating unevenness at the edges that causes the user's head to tend to slip, resulting in discomfort and poor posture. Even if the inflatable chamber has a reduced air volume, the air distribution creates areas of different densities that lead to inadequate positioning.

[011] In this way, the Applicant developed a density-adjustable pillow that incorporates an inflatable chamber positioned in a main body with a hollow central region, creating a niche for the inflatable chamber to be accommodated, avoiding unevenness at the edges and differences in density. SUMMARY Petition 870250028801, dated 10 / 04 / 2025, page 7 / 16 4 / 5

[012] The invention describes a pillow with adjustable density, providing an ergonomic design that adapts to the shape of the head and neck.

[013] The invention describes a pillow with areas of different densities to optimize comfort and spinal alignment.

[014] The invention describes a pillow with customizable height and pressure. BRIEF DESCRIPTION OF THE FIGURES

[015] Figure 1 shows a perspective view of the pillow, highlighting the positioning of the inflatable chamber in the central region of the foam body.

[016] Figure 2 shows the exploded view. DETAILED DESCRIPTION OF THE INVENTION

[017] The density-adjustable pillow, the subject of the present invention, comprises a main body with filling material (10) having a hollow central region (11). The filling material comprises fabric, foam flakes, silicone fiber, polyester, compact foam, latex, among others.

[018] In the central hollow region (11) an inflatable chamber (20) with an inflation valve (21) is positioned.

[019] On the upper face and on the lower face of the main body (10) is arranged a flattened body (30a) and (30b) filled with filling material selected from fabric, foam flakes, silicone fiber, polyester, compact foam, latex, among others.

[020] The planar body (30a) and (30b) can be fixed to the main body (10) by means of non-permanent fastening elements, such as velcro, preventing mobility. Petition 870250028801, dated 10 / 04 / 2025, page 8 / 16 5 / 5

[021] Optionally, at least one planar body (30a) or (30b) is permanently associated with the main body (10) by means of stitching, welding, or other means.

[022] By means of the inflation valve (21), the inflatable chamber (20) is filled with air through an air intake hose (211), allowing the height and pressure to be adjusted.

[023] The inflatable chamber (20) conforms to the hollow central region of the main body (10), preventing the edges from becoming uneven in relation to the rest of the chamber (20). The perimeter of the main body (10) is filled with filling material, ensuring that the pillow provides adequate support.

[024] Optionally, the main body (10) with the inflatable chamber (20) and the flattened bodies (30a) and (30b) are arranged in a cover (40). Petition 870250028801, dated 10 / 04 / 2025, page 9 / 16

Claims

1 / 1 CLAIMS 1. DENSITY ADJUSTABLE PILLOW having a cover (40), characterized by comprising: a) a main body with filling material (10) having a hollow central region (11); b) an inflatable chamber (20) with an inflation valve (21) disposed in the hollow central region (11); c) a flattened body (30a) disposed on the upper face of the main body (10) and a flattened body (30b) on the lower face of the main body (10); 2. PILLOW WITH DENSITY ADJUSTMENT, according to claim 1, characterized by the flattened body (30a) and (30b) being fixed to the main body (10) by means of non-permanent fastening elements. Petition 870250028801, dated 10 / 04 / 2025, page 10 / 16

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