US 11,873,809 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, Rogers, 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. 18/221,158.
Application 18/221,158 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 62/097,800, filed on Dec. 30, 2014.
Claims priority of provisional application 62/097,804, filed on Dec. 30, 2014.
Claims priority of provisional application 62/097,791, filed on Dec. 30, 2014.
Prior Publication US 2023/0349375 A1, Nov. 2, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F04B 53/14 (2006.01); F04B 53/22 (2006.01); F04B 19/22 (2006.01); F04B 53/16 (2006.01); F15B 15/14 (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)] 19 Claims
OG exemplary drawing
 
1. A system comprising:
a drive housing having a bottom and an opening extending through the bottom of the drive housing; and
a driving link located within the drive housing, the driving link comprising a drive cavity located within the drive housing; and
a pump which axially reciprocates, the pump comprising:
a cylinder comprising a top end;
a pump rod that extends along an axis and out from the top end of the cylinder, the pump rod comprising a head connected by a neck, the head wider than the neck; and
a threaded ring located on the cylinder and which rotates around the cylinder,
wherein the pump mounts to the drive housing by the threaded ring engaging the bottom of the drive housing to secure the pump to the drive housing while the cylinder extends upward into the opening and while the pump rod extends within the drive housing and while the head is received within the drive cavity to be held by the driving link and while the neck extends downward within the driving link and out of the driving link, and
wherein the pump dismounts from the drive housing by disengaging the threaded ring from the bottom of the drive housing which allows the head of the pump rod to slide out of the drive cavity of the driving link and then the pump rod to be withdrawn from the drive housing.
 
18. A system, comprising:
a drive housing having a bottom and an opening extending through the bottom of the drive housing; and
a driving link located within the drive housing, the driving link comprising a drive cavity located within the drive housing; and
a pump which axially reciprocates along an axis, the pump comprising:
a pump body comprising a top end;
a pump rod that extends out from the top end of the pump body, the pump rod comprising a head connected by a neck, the head wider than the neck; and
a threaded ring located on the pump body such that the pump body extends above and below the threaded ring, the threaded ring configured to rotate around the pump body;
a frame that includes a plurality of legs that extend downward from the drive housing to support the drive housing, the plurality of legs extending below the pump when the pump is mounted to the drive housing;
wherein the pump mounts to the drive housing by the threaded ring rotating to move axially upwards to tighten up against the bottom of the drive housing to secure the pump to the drive housing while the pump body extends into the opening such that the pump hangs down from the drive housing and while the pump rod extends up within the drive housing so that the head is received within the drive cavity of the driving link and the neck extends downward within and out of the driving link, and
wherein the pump dismounts from the drive housing by the threaded ring rotating to move axially downwards to disengage from the bottom of the drive housing to loosen the pump relative to the drive housing which releases the head of the pump rod to slide laterally out of the drive cavity of the driving link and then the pump rod to be withdrawn from the drive housing.
 
19. A system comprising:
a drive housing having a bottom and an opening on the bottom of the drive housing; and
a driving link located within the drive housing, the driving link comprising a drive cavity located within the drive housing, the drive cavity having a front opening; and
a pump which axially reciprocates along an axis, the pump comprising:
a cylinder;
a pump rod that extends out from the cylinder, the pump rod comprising a head connected by a neck, the head wider than the neck, the pump rod and the driving link configured to connect together by the head inserting through the front opening into the drive cavity; and
a threaded ring located on the cylinder such that the cylinder extends above and below the threaded ring, the threaded ring rotatable around the cylinder;
wherein the pump is mounted to the drive housing by the threaded ring engaging the drive housing to secure the cylinder to the drive housing while the cylinder extends from below the drive housing up into the opening and while the pump rod extends within the drive housing so that the head is held within the drive cavity by the driving link while the neck extends downward within the driving link;
wherein the pump dismounts from the drive housing by the threaded ring disengaging from the drive housing which allows the head of the pump rod to slide out of the drive cavity through the front opening; and
wherein engagement of the threaded ring with the drive housing by rotation of the threaded ring prevents the head from sliding out of the drive cavity and disengagement of the threaded ring from the drive housing releases the head to slide out of the drive cavity.