Abstract: An apparatus for restricting axial flow through the clearance between a rotating shaft and a seal stator comprises an abradable labyrinth seal and swirl-reversal vanes upstream of the labyrinth seal. The shaft comprises a first toothed axial section having a plurality of annular teeth, a second upstream toothed axial section having a few annular teeth from one to three, and a section therebetween having a cylindrical surface of diameter less than the outer edge of the teeth of the toothed sections, the swirl-reversing vanes being fastened to the stator seal between the toothed sections.

Abstract: The impeller axial lock limits axial movement of an impeller disposed on a shaft. The impeller is spaced axially from a shaft sleeve disposed about the shaft. The impeller axial lock includes a ring member disposed about the shaft between the impeller and shaft sleeve. The ring member has a body defining a first engagement tab engaging the impeller, a second engagement tab engaging the shaft, and a third engagement tab engaging the shaft sleeve. The shaft sleeve secures the ring member to the shaft via the third engagement tab such that the ring member limits axial movement of the impeller on the shaft during rotation of the impeller. The second engagement tab engages a groove in the shaft, and the third engagement tab engages a groove in the shaft sleeve.

Abstract: The impeller axial lock limits axial movement of an impeller disposed on a shaft. The impeller is spaced axially from a shaft sleeve disposed about the shaft. The impeller axial lock includes a ring member disposed about the shaft between the impeller and shaft sleeve. The ring member has a body defining a first engagement tab engaging the impeller, a second engagement tab engaging the shaft, and a third engagement tab engaging the shaft sleeve. The shaft sleeve secures the ring member to the shaft via the third engagement tab such that the ring member limits axial movement of the impeller on the shaft during rotation of the impeller. The second engagement tab engages a groove in the shaft, and the third engagement tab engages a groove in the shaft sleeve.

Abstract: A magnet cradle for supporting a permanent magnet in an overhung recessed slot on the surface of a permanent magnet rotor having an axis of rotation. The cradle is non-magnetic and comprises a top and bottom wall abutting the permanent magnet. The cradle is sized to hold the permanent magnet within the overhung slots. Axial end walls generally perpendicular to the axis of rotation have circumferential edges configured to directly abut overhung portions of the slots. The total axial length of the top and bottom walls of the cradles in the axial direction are greater that the total axial length of the magnet, thereby permitting a magnet to fit between the axial end walls of the cradle without the cradle in the magnetic flux path of the magnet.

Abstract: A fat recovery system for hide fleshings and trimmings is disclosed having a grinder for comminuting the fleshings and trimmings, the same being oriented to deliver its parts into a cooker having a steam jacket tube with an interior screw conveyor. After the particulate material has passed through the cooker, a drum type rotary screen is provided from which fat will drop, and the particulate materials pass into a press. Thereafter the solid particulates are removed and the liquid products are delivered into a settling vessel which is heated by steam pipes. Optionally, a drying tank may also be provided. The method of the subject invention essentially includes comminuting the fleshings and trimmings, passing the same through a confined passageway, and agitating the same simultaneously to prevent the particles from coalescing. Thereafter, the particles are screened, and the remaining solids passed into means for pressing the same.

Abstract: A fat recovery system for hide fleshings and trimmings is disclosed having a grinder for comminuting the fleshings and trimmings, the same being oriented to deliver its parts into a cooker having a steam jacket tube with an interior screw conveyor. After the particulate material has passed through the cooker, a drum type rotary screen is provided from which fat will drop, and the particulate materials pass into a press. Thereafter the solid particulates are removed and the liquid products are delivered into a settling vessel which is heated by steam pipes. Optionally, a drying tank may also be provided. The method of the subject invention essentially includes comminuting the fleshings and trimmings, passing the same through a confined passageway, and agitating the same simultaneously to prevent the particles from coalescing. Thereafter, the particles are screened, and the remaining solids passed into means for pressing the same.