US 11,939,994 B2
Rotor and rotor shaft for molten metal
Paul V. Cooper, Chesterland, OH (US)
Assigned to Molten Metal Equipment Innovations, LLC
Filed by Molten Metal Equipment Innovations, LLC, Middlefield, OH (US)
Filed on Mar. 24, 2022, as Appl. No. 17/703,912.
Application 17/703,912 is a continuation of application No. 15/916,089, filed on Mar. 8, 2018, granted, now 11,286,939.
Application 15/916,089 is a continuation of application No. 14/791,166, filed on Jul. 2, 2015, granted, now 10,138,892, issued on Nov. 27, 2018.
Claims priority of provisional application 62/020,332, filed on Jul. 2, 2014.
Prior Publication US 2022/0213895 A1, Jul. 7, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. F04D 7/06 (2006.01); C22B 7/00 (2006.01); C22B 9/00 (2006.01); F04D 29/20 (2006.01); F16C 3/02 (2006.01); F16D 1/02 (2006.01); F16D 1/10 (2006.01); F27D 3/14 (2006.01); F27D 3/16 (2006.01); F27D 17/00 (2006.01); F27D 27/00 (2010.01); F27D 99/00 (2010.01)
CPC F04D 7/065 (2013.01) [C22B 7/003 (2013.01); C22B 9/00 (2013.01); F04D 29/20 (2013.01); F16D 1/02 (2013.01); F16D 1/10 (2013.01); F27D 3/14 (2013.01); F27D 3/16 (2013.01); F27D 17/002 (2013.01); F27D 27/005 (2013.01); F27D 99/00 (2013.01); F16C 3/02 (2013.01); F16D 2001/102 (2013.01); F27D 2099/0083 (2013.01); Y02P 10/20 (2015.11)] 16 Claims
OG exemplary drawing
 
1. A device comprising (A) a rotor shaft, wherein the rotor shaft is comprised of one or more of the group consisting of graphite and ceramic and the rotor shaft includes (a) a first end configured to be received in a coupling, and (b) a second end configured to be connected to a rotor, wherein the second end has at least one outwardly-extending projection that is configured to (i) fit through an elongated section in an upper surface of the rotor, and (ii) be received and retained in a rotor cavity that has at least one abutment, wherein the abutment is configured such that the at least outwardly extending projection presses against the abutment it and transmits driving force to the abutment in order to rotate the rotor when the rotor shaft is rotated; and (B) a rotor connected to the second end of the rotor shaft, the rotor including the upper surface, a rotor opening, the elongated section, the at least one abutment, and the rotor cavity.