# US 10,502,208 B2 · Magnetically engaged pump

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- Number: US 10,502,208 B2
- Document ID: US10502208B2
- Status: Granted
- Kind: B2
- Application number: 16/423,793
- Filed: 2019-05-28
- Published: 2019-09-12
- Granted: 2019-12-10
- Earliest claimed: 2017-04-26
- Assignees: Wilden Pump & Engineering Co.
- Applicants: Wilden Pump and Engineering LLC
- Inventors: Brian James Sandore; Loren Michael Libby; Nicholas William Ortega; Robert George Schwartz; Christoplher Leopold; Clark Shafer; William Blankemeier
- Web page: https://patentgrep.com/patent/US10502208B2

## CPC

- F04C 15/0069: {Magnetic couplings}
- F01C 1/063: with coaxially-mounted members having continuously-changing circumferential spacing between them
- F01C 1/10: of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F01C 1/18: with similar tooth forms (F01C1/16 takes precedence)
- F01C 1/24: of counter-engagement type, i.e. the movement of co-operating members at the points of engagement being in opposite directions
- F04B 1/053: with actuating or actuated elements at the inner ends of the cylinders
- F04B 9/045: {the means being eccentrics}
- F04B 17/03: driven by electric motors
- F04C 2/10: of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C 2/101: {with a crescent-shaped filler element, located between the inner and outer intermeshing members}
- F04D 13/024: {a magnetic coupling}
- F04D 13/026: {Details of the bearings}
- F04D 29/605: {specially adapted for liquid pumps}
- F04C 2230/70: Disassembly methods
- F04C 2240/60: Shafts
- F04D 29/2222: {Construction and assembly (F04D29/2211 takes precedence)}
- F04C: ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS (engines F03C); ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F01C: ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES (internal-combustion aspects F02B53/00, F02B55/00)
- F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F)
- F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02)

## Abstract

A magnetically engaged pump includes a pump housing with a rotatable magnetic drive assembly, a cylindrical canister and a rotatable driven magnet assembly. This magnetic coupling is associated with a pump rotor and a laterally positioned gear wheel to define a gear pump. This magnetic coupling is alternatively associated with a pump rotor with an impeller to define a centrifugal pump. Either pump includes a stationary shaft to mount the driven magnet assembly and pump rotor. A rotatable carrier with bushings and thrust bushings coaxially supports the rotatable driven magnet assembly and pump rotor.

## Claims

### Claim 1

A magnetically engaged pump comprising
a pump housing including a shaft in the housing;
a magnetic coupling in the pump housing including a rotatable magnetic drive, a rotatable driven magnet assembly inwardly of the rotatable magnetic drive and a cylindrical canister extending between the rotatable magnetic drive and the rotatable driven magnet assembly, the rotatable driven magnet assembly having a concentric cavity;
a pump rotor engaged with the rotatable driven magnet assembly and including an axial passage;
a carrier including a bore rotatably disposed about the shaft and at least one plain bushing in the bore bearing on the shaft and being separable from the carrier, the carrier being within the concentric cavity and fitting through the axial passage for removal from the pump with the pump rotor engaged with the rotatable driven magnet assembly and the rotatable driven magnet assembly magnetically engaged with the rotatable magnetic drive.

### Claim 2 (depends on 1)

The magnetically engaged pump of claim 1 further comprising
an inner impeller wheel rotatable with the rotatable driven magnet assembly and axially removable through the pump rotor, the pump rotor including an annular impeller wheel having continuity of flow with the inner impeller wheel.

### Claim 3

A magnetically engaged pump comprising
a pump housing including a shaft in the housing;
a magnetic coupling in the pump housing including a rotatable magnetic drive, a rotatable driven magnet assembly inwardly of the rotatable magnetic drive and a cylindrical canister extending between the rotatable magnetic drive and the rotatable driven magnet assembly, the rotatable driven magnet assembly having a concentric cavity;
a pump rotor engaged with the rotatable driven magnet assembly and including an axial passage;
a carrier including a bore rotatably disposed about the shaft, at least one plain bushing in the bore bearing on the shaft, and a radial attachment flange engageable to rotate with the rotatable driven magnet assembly, the carrier being within the concentric cavity and fitting through the axial passage for removal from the pump with the pump rotor engaged with the rotatable driven magnet assembly and the rotatable driven magnet assembly magnetically engaged with the rotatable magnetic drive.

### Claim 4 (depends on 3)

The magnetically engaged pump of claim 3 further comprising
an inner impeller wheel rotatable with the rotatable driven magnet assembly and axially removable through the pump rotor, the pump rotor including an annular impeller wheel having continuity of flow with the inner impeller wheel.

### Claim 5 (depends on 4)

The magnetically engaged pump of claim 4, the pump rotor including an inwardly extending flange, the radial attachment flange abutting against the inwardly extending flange of the pump rotor, the radial attachment flange being between the inwardly extending flange of the pump rotor and the inner impeller wheel.

### Claim 6 (depends on 5)

The magnetically engaged pump of claim 5 further comprising
fasteners extending through the inner impeller wheel, the radial attachment flange and the inwardly extending flange of the pump rotor and engaging with the rotatable driven magnet assembly, in seriatim.

### Claim 7 (depends on 3)

The magnetically engaged pump of claim 3, the at least one plain bushing being separable from the carrier.