Pump and motor assembly

Details Pump and motor assembly Pump and motor assembly

1978-03-20

1980-05-06

Croyle, Carlton R.

Pumps

Processes

291564R, 29464, 417410, 418131, 418135, F04B 3504

Patent

active

042015219

ABSTRACT:
An improved pump and motor assembly includes a fluid pump and an electric motor which are accurately positioned relative to each other by a plurality of locating pins which engage the inner surface of a common housing. By using a single reference surface, that is the inside surface of the housing, the adding of tolerances and the resulting compounding of inaccuracies in locating the pump and motor relative to each other is avoided. The pump has a cheek plate with a bearing surface which rotatably supports one end of the motor armature shaft. The locating pins extend outwardly from a major side surface of the cheek plate into abutting engagement with the inner surface of the housing to locate the cheek plate and the armature shaft bearing surface relative to the housing. A cam or stator ring of the pump is also mounted on the locating pins to accurately position the cam ring relative to the pump rotor and motor armature.

REFERENCES:
patent: 2885962 (1959-05-01), Campbell
patent: 3200752 (1965-08-01), Clark et al.
patent: 3639085 (1972-02-01), Bertach et al.
patent: 3787151 (1974-01-01), Carlson
patent: 3797977 (1974-03-01), Carlson

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