US 12,214,398 B2
Roll-forming tool for creating a noncircular feature, method of creating a noncircular feature, and method of assembling a pump having a noncircular joint
Kyle D. Mills, Etobicoke (CA)
Assigned to Hanon Systems EFP Canada Ltd., Concord (CA)
Appl. No. 16/972,059
Filed by HANON SYSTEMS EFP CANADA LTD., Concord (CA)
PCT Filed Mar. 28, 2019, PCT No. PCT/IB2019/052563
§ 371(c)(1), (2) Date Dec. 4, 2020,
PCT Pub. No. WO2019/239224, PCT Pub. Date Dec. 19, 2019.
Claims priority of provisional application 62/683,222, filed on Jun. 11, 2018.
Prior Publication US 2021/0170469 A1, Jun. 10, 2021
Int. Cl. B21D 19/04 (2006.01); B21D 39/02 (2006.01); F04D 29/60 (2006.01); B21D 51/32 (2006.01)
CPC B21D 19/046 (2013.01) [B21D 39/02 (2013.01); F04D 29/60 (2013.01); B21D 51/32 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of deforming a noncircular lip, the method comprising:
rotating a roll-forming tool about a longitudinal axis, the roll-forming tool including a central shaft having the longitudinal axis, a first axle having a first lateral axis that extends substantially perpendicular to the longitudinal axis, a second axle having a second lateral axis that extends substantially perpendicular to the longitudinal axis, a first roller rotatably coupled to the first axle and adapted to rotate about the first lateral axis, and a second roller rotatably coupled to the second axle and adapted to rotate about the second lateral axis, the first roller and the second roller being radially positioned with respect to the longitudinal axis and circumferentially spaced with respect to each other;
while rotating the roll-forming tool, engaging the first and second rollers with the noncircular lip;
applying a load to the noncircular lip, the load being applied parallel to the longitudinal axis;
continuing rotating the roll-forming tool about the longitudinal axis, the longitudinal axis remaining in a fixed position, wherein the rotating of the roll-forming tool with the load applied causes the first and second rollers to concurrently and operably engage the noncircular lip and deform the noncircular lip, and
maintaining a constant spacing between the first roller and the second roller during a complete revolution of the roll-forming tool, wherein the first axle, the second axle, the first roller and the second roller rotate together with the central shaft.