US 11,746,775 B2
Bearing system for reciprocating pump and method of assembly
Jacob A. Bayyouk, Richardson, TX (US); Edward C. Kotapish, Willow Park, TX (US); Chandu Kumar, Fort Worth, TX (US); Donald Keith Plemons, Fort Worth, TX (US); and Benjamin D. Engstrom, Fort Worth, TX (US)
Assigned to SPM Oil & Gas Inc., Fort Worth, TX (US)
Filed by SPM Oil & Gas Inc., Forth Worth, TX (US)
Filed on Oct. 1, 2018, as Appl. No. 16/148,805.
Application 16/148,805 is a division of application No. 14/808,581, filed on Jul. 24, 2015, granted, now 10,087,992.
Claims priority of provisional application 62/155,793, filed on May 1, 2015.
Claims priority of provisional application 62/095,689, filed on Dec. 22, 2014.
Claims priority of provisional application 62/029,271, filed on Jul. 25, 2014.
Prior Publication US 2019/0032720 A1, Jan. 31, 2019
Int. Cl. F04B 53/22 (2006.01); F16C 9/02 (2006.01); F16C 35/067 (2006.01); F16C 35/04 (2006.01); F04B 9/02 (2006.01); B21K 1/26 (2006.01); F04B 19/22 (2006.01); F04B 53/14 (2006.01); F04B 53/00 (2006.01); F04B 39/12 (2006.01); F04B 53/16 (2006.01); F04B 7/00 (2006.01); F04B 37/00 (2006.01)
CPC F04B 53/006 (2013.01) [F04B 39/128 (2013.01); F04B 53/16 (2013.01); F04B 53/22 (2013.01); F16C 9/02 (2013.01); F16C 35/067 (2013.01); B21K 1/26 (2013.01); F04B 7/0069 (2013.01); F04B 9/02 (2013.01); F04B 19/22 (2013.01); F04B 37/00 (2013.01); F04B 53/14 (2013.01); F04B 53/162 (2013.01); F04B 2201/06 (2013.01); F16C 35/04 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A crankshaft for a power end of a reciprocating pump, comprising:
a body having a first longitudinal end and a second longitudinal end;
a pair of inner journals longitudinally adjacent to each other;
a pair of middle journals,
wherein each of the middle journals is disposed longitudinally between one of the inner journals and the respective first or second longitudinal end of the body; and
a pair of outer journals,
wherein each of the outer journals is disposed longitudinally between one of the middle journals and the respective first or second longitudinal end of the body,
wherein an outer diameter of each inner journal is greater than an outer diameter of each middle journal,
wherein the outer diameter of each middle journal is greater than an outer diameter of each outer journal,
wherein each of the outer journals is configured to receive a corresponding outer bearing race therearound, and
wherein an inner diameter of each outer bearing race is less than the outer diameters of each of the inner and middle journals, respectively.