US 11,873,810 B2
Displacement pump mounting and retention
David J. Thompson, Oak Grove, MN (US); Christopher A. Lins, Waverly, MN (US); Andrew J. Kopel, Stanchfield, MN (US); Glen W. Davidson, Roseville, MN (US); Chad R. Taszarek, Albertville, MN (US); Chris W. Sydow, Becker, MN (US); William M. Blenkush, Becker, MN (US); and Steve J. Wrobel, Roger, MN (US)
Assigned to Graco Minnesota Inc., Minneapolis, MN (US)
Filed by Graco Minnesota Inc., Minneapolis, MN (US)
Filed on Jul. 12, 2023, as Appl. No. 18/221,199.
Application 18/221,199 is a continuation of application No. 18/215,374, filed on Jun. 28, 2023.
Application 18/215,374 is a continuation of application No. 17/989,250, filed on Nov. 17, 2022, granted, now 11,732,708.
Application 17/989,250 is a continuation of application No. 17/861,864, filed on Jul. 11, 2022, granted, now 11,530,697, issued on Dec. 20, 2022.
Application 17/861,864 is a continuation of application No. 17/688,360, filed on Mar. 7, 2022, granted, now 11,396,871, issued on Jul. 26, 2022.
Application 17/688,360 is a continuation of application No. 17/325,684, filed on May 20, 2021, granted, now 11,286,926, issued on Mar. 29, 2022.
Application 17/325,684 is a continuation of application No. 16/696,255, filed on Nov. 26, 2019, granted, now 11,035,359, issued on Jun. 15, 2021.
Application 16/696,255 is a continuation of application No. 14/984,212, filed on Dec. 30, 2015, granted, now 10,502,206, issued on Dec. 10, 2019.
Claims priority of provisional application 62/097,806, filed on Dec. 30, 2014.
Claims priority of provisional application 62/097,804, filed on Dec. 30, 2014.
Claims priority of provisional application 62/097,800, filed on Dec. 30, 2014.
Claims priority of provisional application 62/097,791, filed on Dec. 30, 2014.
Prior Publication US 2023/0366396 A1, Nov. 16, 2023
Int. Cl. F04B 53/14 (2006.01); F04B 53/22 (2006.01); F04B 53/16 (2006.01); F15B 15/14 (2006.01); F04B 19/22 (2006.01); F04B 15/02 (2006.01)
CPC F04B 53/144 (2013.01) [F04B 19/22 (2013.01); F04B 53/147 (2013.01); F04B 53/162 (2013.01); F04B 53/22 (2013.01); F15B 15/1438 (2013.01); F04B 15/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of mounting and dismounting a pump from a drive housing having a bottom and an opening extending through the bottom of the drive housing, and from a driving link located within the drive housing, the driving link comprising a drive cavity located within the drive housing, the pump comprising a cylinder comprising a top end, the pump further comprising a threaded ring located on the cylinder such that the cylinder extends above the threaded ring and below the threaded ring and the threaded ring is rotatable around the cylinder, and the pump further comprising a pump rod that extends out from the top end of the cylinder, the pump rod comprising a head connected to a neck, the head wider than the neck, wherein the method comprises:
securing the pump to the drive housing by:
moving the cylinder into the opening of the drive housing such that the pump rod extends within the drive housing;
sliding the head into the drive cavity so that the head is held by the driving link and the neck extends downward within the driving link; and
engaging the bottom of the drive housing with the threaded ring which tightens the pump to the drive housing and thereby prevents the head from sliding out of the drive cavity; and
removing the pump from the drive housing by:
disengaging the threaded ring from the bottom of the drive housing which loosens the pump and thereby releases the head to slide out of the drive cavity;
sliding the head out of the drive cavity; and
withdrawing the cylinder from the drive housing.
 
19. A method of mounting and dismounting a pump from a drive housing having a bottom and an opening extending through the bottom of the drive housing, and from a driving link located within the drive housing, the driving link comprising a drive cavity within the drive housing, the pump comprising a cylinder comprising a top end, the pump further comprising a threaded ring located on the cylinder such that the cylinder extends above the threaded ring and below the threaded ring and the threaded ring is rotatable around the cylinder, and the pump further comprising a pump rod that extends out from the top end of the cylinder, the pump rod comprising a head connected to a neck, the head wider than the neck, wherein the method comprises:
securing the pump to the drive housing such that the pump hangs down from the drive housing by:
moving the pump into the opening of the drive housing such that the pump rod extends within the drive housing;
sliding the head laterally into the drive cavity so that the head is held by the driving link and the neck extends downward through within the driving link; and
rotating the threaded ring around the cylinder to tighten the threaded ring to the bottom of the drive housing while the head remains in the drive cavity; and
removing the pump from the drive housing by:
rotating the threaded ring around the cylinder to loosen the pump from the drive housing while the head remains in the drive cavity;
sliding the head laterally out of the drive cavity; and
withdrawing the pump rod from the drive housing.
 
20. A method of mounting and dismounting a pump from a drive housing having a bottom and an opening extending through the bottom of the drive housing, and from a driving link located within the drive housing, the driving link comprising a drive cavity located within the drive housing, the drive cavity comprising a front opening, the pump comprising a pump body, the pump further comprising a threaded ring located on the pump body such that the pump body extends above the threaded ring and below the threaded ring and the threaded ring is rotatable around the pump body, and the pump further comprising a pump rod that extends out from the pump body, the pump rod comprising a head connected to a neck, the head wider than the neck, wherein the method comprises:
securing the pump to the drive housing such that the pump hangs down from the drive housing by:
moving the pump into the opening of the drive housing such that the pump rod extends within the drive housing;
sliding the head into the drive cavity through the front opening while the pump body extends through the opening of the drive housing so that the neck extends downward and out of the driving link while the head is held inside of the drive cavity; and
engaging the bottom of the drive housing with the threaded ring wherein such engagement of the threaded ring with the bottom of the drive housing prevents the head from sliding out of the front opening of the drive cavity; and
removing the pump from the drive housing by:
rotating the threaded ring around the pump body to disengage the threaded ring from the drive housing while the head remains in the drive cavity wherein such disengagement of the threaded ring from the bottom of the drive housing releases the head to slide out of the front opening of the drive cavity;
sliding the head out of the front opening of the drive cavity; and
withdrawing the pump rod from the drive housing.