Hopper cover

Details Hopper cover Hopper cover

B - Operations, Transporting

65

D

B65D 90/66 (2006.01) A01D 41/12 (2006.01) A01D 90/12 (2006.01) B65D 90/54 (2006.01)

Patent

CA 2520351

A cover assembly adapted to be fitted over the open top of a bin includes a pair of spaced apart, domed rigid hoods releasably attachable to upper portions of the hopper whereby an elongated opening is defined between the hoods of sufficient width as to provide access to the hopper. A flexible closure member spans the opening between the hoods while supported on trackways extending along marginal edge portions of the hoods which bound the elongated opening. A pair of rotatable rollers are attachable, one at each of the opposing end portions of the opening. One roller is spring-loaded, upon and from which roller the closure member is wound and unwound during travel of said closure member over the elongated opening. The other roller is connected by pull cables to the closure member, and powered to provide for travel of the closure member.

Un couvercle conçu pour se fixer sur l'ouverture d'un bac comprend deux sections rigides bombés espacées l'une de l'autre et adaptables de manière amovible aux parties supérieures de la trémie, sur laquelle une ouverture allongée est aménagée, entre les sections, sur une largeur suffisante pour permettre l'accès à la trémie. Un cache de fermeture souple recouvre l'ouverture aménagée entre les sections de couvercle. Ce cache est en appui sur des tringles qui se prolongent le long des bordures des sections de couvercle qui sont reliées à l'ouverture allongée. Deux galets rotatifs amovibles viennent se fixer chacun à l'une des extrémités opposées de l'ouverture. Un galet est rappelé par ressort. Le cache de fermeture pivote autour de ce galet lorsqu'il est basculé en position ouverte ou fermée au-dessus de l'ouverture allongée. L'autre galet est relié au cache de fermeture par des câbles de traction et il est actionné pour permettre le basculement du cache de fermeture.

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