2results about How to "Extended functional life" patented technology

This invention relates to a relay and an automatic circuit protection method using the relay. The relay includes a housing, conductive steps disposed on the inner walls of the left and right sides of the housing, and a stepped conductive bridge that can dynamically fit with the conductive steps. External cables pass through the housing and are electrically connected to the conductive steps. A piston push rod device drives the conductive bridge to rise and fall, connecting or disconnecting it from the conductive steps. The piston push rod device is driven by vapor generated by the sublimation of an easily sublimable substance. This relay and the automatic high-voltage circuit protection method using the relay are not only reusable, but also have a simple and stable structure, low manufacturing and assembly costs, stable operation, long service life, and can reliably achieve power cut-off in a fire.

The utility model discloses a multilayer composite density foamed shoe sole, foamed shoe sole includes the foot pad layer, high resilience layer, transition layer and high density rubber layer from top to bottom are sequentially stacked and set up, and the accommodation cavity that sets up in the arch of foot part area, and the soft porous breathable cover plate that shape with the opening of accommodation cavity is adapted, still includes a connecting piece, to make soft porous breathable cover plate detachably closes the opening of accommodation cavity, multilayer composite density foaming structure can carry out accurate mechanical property optimization to different area of foot, the bottom layer adopts high density material to provide durable support and stability, the middle layer adopts transition density material to realize effective force transmission, and the upper layer and the bottom contact layer adopt low density high resilience material to provide the extreme soft foot feeling, this gradient density design makes the foot more evenly distributed when walking and standing, effectively relieves foot fatigue.