Rear seal assembly for a chamber holding a partially frozen beverage

Abstract From the Canadian patent

A seal assembly for a rotatable shaft having an axial end passing through a wall comprising a first resilient seal for sealing, fitted onto the shaft, the first seal including a circumferenctially disposed, slightly axially movable portion. The movable portion is axially biased outboard towards the axial end of the shaft. A first member is fitted on the first seal and having a first axial end face, bearing surface spaced from the shaft. A second member is spaced from the shaft and has a second axial end face, bearing surface that interfaces with the first bearing surface. A seal housing has a passage therethrough for the shaft, an axially outboard male threaded extension an, axially …