| 摘要 |
<p>A balanced-opening cover (1) for the tanks of ice-cream making machines, pasteurizers and the like made of clear plastics and provided, at the edge which is hinged to the top plane (2) of the machine, with two co-axial pivots (3) protruding laterally outwards and each engaging in a semi-circular groove formed in the lower side of the horizontal arm of two hinge members (4) which are substantially shaped as an inverted "L", said hinge members (4) being urged against the plane matching with the cover (1) by suitable resilient means (6), said cover (1) being also provided at the hinged edge thereof with cam means (501) cooperating with said matching plane, so as to provide one or more balanced-opening positions.</p> |
