Sutekkaru is an eating utensil made by forming a high-hardness
protective coating on the surface of cast aluminum by thermally
spraying a metal harder than aluminum such as iron. Sutekkaru
is especially suitable for use as a steak plate.
The combination of a surface as hard as iron and a base
made of cast aluminum means that this product weighs 40
percent less than a cast iron utensil of the same size while
boasting heat retention characteristics comparable to that
of iron utensils.
Moreover, if the meat on the plate is cut with a knife,
the thermal-sprayed metal coating prevents the aluminum
casting from dented or scratched.
With this product, the hardness and heat resistance of
a cast iron utensil can be achieved with 40 percent less
weight, which enables easier handling and cleaning. The
materials and manufacturing method of the product also combine
to prevent rusting and peeling.
In addition, we can produce original design versions of
Sutekkaru to meet individual customer needs.
This invention was born out of the attention focused on
a crescent gap formed when a bolt is inserted into a round
hole, in which a supporting point can be provided to stop
the bolt from rotating.
The idea is to provide a supporting point in a crescent
gap to prevent bolt rotation when a nut is tightened, thereby
securing the bolt or enabling the removal of the nut from
a rusty bolt.
A supporting point is also provided to prevent the tightened
nut from loosening.
Specifically, a washer with a protrusion that fits into
the crescent gap is used. A mechanism to lock the washer
with the head of a bolt stops the bolt from rotating together
with the nut.
In addition, using a washer with a protrusion paired with
a washer that rotates with a nut in order to secure the
nut prevents loosening of the nut.This invention has been
patented in Japan and in seven other countries. We are currently
looking for companies that can cooperate with us in prototyping
and commercialization of this product.