Fire hose couplers, c-clamps, wheel lug nuts, air conditioning connections, quick-on nuts used on printed circuit board applications (not shown here), engine head nuts, etc.  Other design applications could include: torque sensing variable cam angle cam shafts, twin track steering drives, tank and/or tractor track replacement tools and fasteners, gas or fuel filler quick disconnection devices, aircraft instrumentation panel (quick disconnect) fasteners, inspection plate fasteners, etc.

We haven't even touched on the topic of "on-off" nuts, automatic bicycle transmissions, wheel locks, space shuttle braking systems, dental tool modifications, and other simple daily use designs.  The list goes on.  As an example, has anyone ever improved on the basic bolt design?  We have.  We even have a device that could replace safety wire on aircraft engines; with a weight and cost savings. The FAA is looking at this device with a requirement regulation in mind.  We also are proposing to the FAA a design for a device that will eliminate the need to scrap jet engine cases after a FAA mandated requirement that a second inspection of the engine case necessitated that they be replaced, regardless of any other damage sought; a potential of $10,000 cost savings.