Patent CN205456233U
Updated October 23, 2026Ear-Shaped Mask Strap Guard with Tension Adjuster
Comfort for anyone who wears an ear-loop mask for hours. A soft guard shaped to the outer ear hooks over the ear; the mask's elastic loop runs in a groove on its back, so the pull is spread along the guard instead of pressing on one line. A tiny elastic cylinder with a tapered hole clips into the guard and sets how tight the loop is.
- China utility model - lapsed
- No filings outside China
- Mask accessory
- Silicone / elastomer, no electronics

Splat! What let you down?
👂
Shaped to the ear
The front follows the outline of the outer ear, so it sits naturally and stays on.
〰️
Spreads the pull
The mask loop runs in a groove behind the guard, spreading the force more evenly.
🎚️
Adjustable tension
A small elastic cylinder with a tapered hole grips the loop and sets its length.
🧩
Two parts, use together or apart
The adjuster clips into a recess in the guard but can also be used on its own.
Bring this product to market
- ✓ Patent vetted China-only family and legal status checked
- 2 Product brief · now How it works, uses and options written up
- 3 Prototype First samples for buyers to review
- 4 Pilot run Small first batch for launch customers
- 5 Volume production Repeat orders at scale
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The problem
Ear-loop face masks are held on by two elastic loops that pull on the back of the ears. The loop length is fixed, so the tension cannot be changed. After a few hours - for healthcare workers, cleaners, food workers or anyone who wears a mask all day - the loops leave marks and the ears become sore.
The solution
The patent adds two small parts to any ear-loop mask:
- An ear guard (1) of silicone, elastomer or plastic. Its front follows the outline of the outer ear, so it hooks around the ear.
- On the back of the guard, a strap groove (3) runs the full length. The mask loop sits in this groove, so its pull is spread along the guard and the loop cannot slip off.
- A tension adjuster (2) - a small elastic cylinder with a tapered hole (5) through its center - grips the loop. Sliding it along the loop shortens or lengthens it.
- A recess (4) on the back of the guard holds the adjuster. The groove passes through the recess, so loop, adjuster and guard work as one unit.

Who it is for
- PPE and healthcare-supply brands selling mask accessories.
- Mask manufacturers wanting a comfort add-on or bundle.
- Amazon and pharmacy sellers in the face-mask accessory category.
How it works
The main parts
| No. | Part | What it does |
|---|---|---|
| 1 | Ear guard | Silicone, elastomer or plastic; front shaped to the outer ear. |
| 2 | Tension adjuster | Small elastic cylinder; can be used with the guard or on its own. |
| 3 | Strap groove | Runs the full length of the back of the guard; the mask loop sits in it. |
| 4 | Recess | On the back of the guard; holds the adjuster. The groove passes through it. |
| 5 | Tapered hole | Through the center of the adjuster; grips the mask loop. |


Fitting it to a mask
- Thread the mask loop through the tapered hole (5) of the adjuster (2).
- Slide the adjuster along the loop to set the length: a shorter loop for a tighter fit, a longer one for less pressure.
- Press the loop into the groove (3) on the back of the ear guard and seat the adjuster in its recess (4).
- Hook the guard over the ear. The pull of the loop is now spread along the guard instead of the back of the ear.
- Repeat on the other side.

Why the tapered hole works
The hole is narrow at one end and wider at the other. The elastic material grips the loop firmly in the narrow part, so the setting holds, but the adjuster can still be slid along by hand when you want to change it.
Applications
Healthcare and dental offices
Staff who wear ear-loop masks for whole shifts.
Food processing and food service
Masks are worn for hours in kitchens, bakeries and packing lines.
Cleaning, janitorial and manufacturing work
Dust masks and disposable masks during long tasks.
Travel and daily wear
Air travel, public transport and air-pollution days.
People with glasses or hearing aids
A guard spreads the loop away from the area behind the ear that glasses arms and hearing aids also use.
Where it is less suitable
- Head-strap respirators (such as N95s with straps around the head) - they do not use ear loops.
- Masks with very short or very weak loops - the adjuster needs some loop length to work.
Frequently asked questions
Does it work with any ear-loop mask?
It works with most disposable and cloth masks that have elastic ear loops. The adjuster hole is matched to round or flat loops during design.
How does it make the mask more comfortable?
The loop runs in a groove behind the guard, so the pull is spread along the guard instead of one line on the back of the ear, and the adjuster lets you loosen or tighten the loop.
Can the adjuster be used without the guard?
Yes. The patent describes the adjuster as a part that can be taken off and used on its own to shorten a loop.
Is it reusable?
Silicone and TPE guards can be washed with soap and water and reused.
Is there a children’s size?
Yes, a smaller size can be made. Products for children must meet US children’s product rules.
Does it work with glasses?
It moves the loop pressure onto the guard; comfort with glasses depends on the guard shape and is checked in wear tests.
Can this design be made and sold in the US?
The patent was filed only in China and lapsed in 2018, so it does not restrict anyone. Other ear-saver designs may be patented - see Patent & Production - so we recommend a freedom-to-operate check before volume production.
Are you affiliated with the patent owner?
No. IP2M is an independent design and manufacturing service working from the public patent document.
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- Sizes - adult, child
- Material and colors
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- Estimated quantity and target price
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This page is based on the public patent document CN205456233U, assigned to an individual inventor. IP2M is an independent manufacturing service and is not affiliated with, endorsed by or licensed by the patent owner. Images marked as concept renderings are illustrations, not photos of an existing product. Patent status information is provided for reference only and is not legal advice; confirm freedom to operate for your market before production. Full disclaimer.