Patent ID: 7947349
Filing Date: 2011-05-24
Classification: B28B,Y10T

Abstract:
1. A moulded piece forming a negative mould of at least a part of a chute of a shaft bottom, the moulded piece being formed from: a base and at least two hollow spaces open toward the base; wherein the moulded piece has a linear and/or an arcuate longitudinal extent and has a first end face lying opposite to a second end face in the longitudinal extent of the moulded piece, the first end face comprising a first end wall and the second end face comprising a second end wall; the moulded piece is a single integrally formed continuous unbroken structure formed from a thermoplastic synthetic material, wherein the thermoplastic synthetic material is continuous and unbroken throughout the structure, so as to facilitate trimming using wire of at least one of the first end wall or the second end wall; and a partition wall extending to the base, the partition wall positioned transverse to the longitudinal extent of the moulded piece and configured to separate a first hollow space of the at least two hollow spaces from a second hollow space of the at least two hollow spaces.