公开(公告)号：US20170241246A1

公开(公告)日：2017-08-24

申请号：US15502719

申请日：2015-07-31

Applicant: Moog Inc.

Inventor： Gregory M. Harnsberger ,  Carl Deirmengian ,  Brian Williams ,  David P. Cardamone ,  John C. Layer

IPC: E21B43/12 ,  F04B19/22 ,  H02K5/132 ,  H02K41/03 ,  H02K1/34 ,  H02K1/14 ,  F04B47/06 ,  F04B17/03

CPC classification number: E21B43/128 ,  E21B41/00 ,  E21B43/121 ,  E21B47/0007 ,  F04B17/03 ,  F04B19/22 ,  F04B47/04 ,  F04B47/06 ,  H02K1/14 ,  H02K1/34 ,  H02K5/132 ,  H02K41/033

Abstract: A linear actuator for pumping comprising a stator having an inner opening, a shaft having a plurality of permanent magnets spaced linearly in the axial direction, the shaft disposed in the stator opening and configured to reciprocate linearly in the axial direction relative to the stator, the stator comprising a first stator assembly having a plurality of pole sections spaced linearly in the axial direction and a plurality of coils disposed therebetween, a second stator assembly having a plurality of pole sections spaced linearly in the axial direction and a plurality of coils disposed therebetween, a bearing assembly positioned axially between the first stator assembly and the second stator assembly, and the bearing assembly having a width that is a function of the spacing of the plurality of pole sections of the first stator assembly and the second assembly and the spacing of the plurality of permanent magnets of the shaft.

公开(公告)号：US11274533B2

公开(公告)日：2022-03-15

申请号：US15502719

申请日：2015-07-31

Applicant: Moog Inc.

Inventor： Gregory M. Harnsberger ,  Carl Deirmengian ,  Brian Williams ,  David P. Cardamone ,  John C. Layer

IPC: E21B43/12 ,  F04B47/06 ,  F04B47/04 ,  F04B17/03 ,  F04B19/22 ,  H02K1/14 ,  H02K1/34 ,  H02K5/132 ,  H02K41/03 ,  E21B47/008

Abstract: A linear actuator for pumping comprising a stator having an inner opening, a shaft having a plurality of permanent magnets spaced linearly in the axial direction, the shaft disposed in the stator opening and configured to reciprocate linearly in the axial direction relative to the stator, the stator comprising a first stator assembly having a plurality of pole sections spaced linearly in the axial direction and a plurality of coils disposed therebetween, a second stator assembly having a plurality of pole sections spaced linearly in the axial direction and a plurality of coils disposed therebetween, a bearing assembly positioned axially between the first stator assembly and the second stator assembly, and the bearing assembly having a width that is a function of the spacing of the plurality of pole sections of the first stator assembly and the second assembly and the spacing of the plurality of permanent magnets of the shaft.