Abstract The introduction of direct electromagnetic drive technology into hydraulic cone crusher has brought great progress to the traditional crushing technology, but sliding bearing repeatedly burned and held during trial production prototype, which poses a new challenge work. In this paper, failure direct-drive machine operation was analyzed. Then structure optimized, ensured safe stable mac...

We examined the ability of two 2-year-old children with limb deficiency to demonstrate grasp and release while using the cable-operated voluntary opening hook-hand and the externally powered single-site myoelectric Cookie Crusher system. The Cookie Crusher circuit is an electronic package that causes the prosthetic hand to open in response to muscle contraction and closes (as if crushing a cook...

Bilateral asymmetry of the paired claws of the lobster Homarus americanus is determined during the fourth and fifth juvenile stages by differential reflex activity; the side with the greater activity becomes the crusher while the contralateral side becomes the cutter. Juvenile lobsters reared during this critical period with a substratum that could not be grasped or with reduced input from pred...