Tools may be dangerous and may cause severe injuries! If you operate tools, make sure that you are allowed and able to safely do so. Please read the entire present document before you start following the instructions. Attention Invention is not liable for physical or economic damages eventuating when rebuilding the items specified therein.
In case you rebuild this invention for private usage, at least in Germany you cannot infringe any third parties’ patent rights! However, if you consider selling or using embodiments of this invention for commercial application please make sure not to infringe any third parties’ protective right. Please, ask your patent attorney if you have questions in this regard!
- External hearing Protection
- Protective eyewear with thermoplastic temple arms
- at least 2 neodymium-magnets about 10 mm diameter with >= 3 mm bore and countersink, 2
o Metric bolt M3 (3 mm) if your hearing protection has metal pins
o Wood screws (2,5-3 mm) if your hearing protection has plastic pins
- 2 knurled nuts, M4 (4 mm)
- 2 threaded bolts M4 (4 mm), 12-15 mm length
- 4 washers
- 4 nuts M4 (4 mm)
Let’s get started!
Do not tighten the screw in order to allow the magnet to totter. Make sure that the screw head is flush with the magnet surface. In case the pin is made of metal, you need to cut a thread into the pins of your hearing protection and use a metric bolt for attaching the magnet.
Next, attach the flat face of the knurled nuts to the magnets.
Try it on! For the next step you may use some help of a friend: Put on your eye protection in the state of the art way such that it fits just right.
Make sure your hearing protection is comfortably positioned. Let your friend mark the position where the imaginary line between the knurled nuts front facing surfaces cuts the thermoplastic part of the eyewear’s temple arms.
Now the other side.
When the temple arm is cooled down, try the eyewear on: The temple arms should abut the front side of the knurled nuts in a flush manner when the eyewear is appropriately positioned on your nose. Apply some more heat to make adjustments, if necessary.
For the next step you may use some more help of a friend or a mirror. Mark the position of the bore in the knurled nuts on the temple arms.
If you want to adjust the distance between the eyewear and the hearing protection (e.g. because you wish to use your magnetic Eyes and Ears by several people or the eyewear with different ear protections) use the knurled nuts or apply some more heat to make final adjustments to the temple arms. Cut away the excess length of the temple arms and sand the ends.
Tipp: Wear a magnet at your jacket to temporarily stow away your eyewear. In case your hearing protection provides the surface, additional magnets can hold your eyewear (e.g. screwed on top of the temple of your hearing protection).