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US RE29,445 EGranted
Pump and electric drive motor unit
AssigneeRobert Bosch GmbH
InventorsHermann Nusser, Hendricus VAN Eeden, Jurgen Ebert
Life of this patent
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Abstract
There is described a pump assembly which, in a unitary structure, comprises a pump proper and an electric pump drive motor, both contained in a common housing. A metal disc, forming part of the pump housing, is positioned at one end inside the common housing and supports a stationary shaft extending coaxially with and along the entire length of the pump assembly. On the stationary shaft journals the armature of the drive motor and the pump rotor member rotationally coupled to the armature.
Claims13
A pump-and-motor unit comprising, in combination:
- A. an elongated external housing having an inlet opening at one end and an outlet opening at the other end ;
- B. a base body contained in said external housing and formed of
- 1. a metal disc secured [at one end] within said external housing adjacent one of said openings and
- 2. a stationary shaft affixed to said metal disc and extending within said external housing [substantially along the entire length thereof] toward said other opening ;
- C. an electrical motor including an armature [axially spaced from] located between said metal disc and said other opening and journaling on said stationary shaft and being exposed to the [flow of] liquid [medium through said pump-and-motor unit] flowing from said inlet opening to said outlet opening ;
- D. a pump rotor member disposed within said external housing;
- and
- E. means rotationally coupling said pump rotor member to said armature.
5 more elements
A pump-and-motor unit comprising, in combination:
- A. an elongated housing having a liquid-admitting inlet end and an opposite liquid-discharging outlet end;
- B. a shaft fixedly mounted in said housing;
- C. a pump installed in said housing adjacent one of said ends and including a first rotor mounted on and rotatable relative to said shaft to thereby cause liquid to flow from said liquid-admitting inlet end to said liquid discharging-outlet end;
- D. an electric motor installed in said housing between said pump and said other end and having a second rotor mounted on and rotatable relative to said shaft and being exposed to the liquid flowing from said liquid-admitting inlet end to said liquid-discharging outlet end;
- and
- E. elastic torque-transmitting means connecting said rotors.
3 more elements
Dependencies are inferred from the claim text.