Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1986-07-21
1987-10-06
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 68C, 310 71, 310 90, 310233, 310239, H02K 500
Patent
active
046985344
ABSTRACT:
A by-pass vacuum motor assembly wherein the motor cooling fan is positioned in an opening at the bottom of the motor band and immediately above a flat plate portion of the fan housing bracket. The flat plate portion functions as a plate diffuser, redirecting air drawn through the commutator end bracket and across the motor internals into a radial exhaust between a bottom portion of the band and a top portion of the fan end bracket. The invention also includes a brush holder clip passing through a vertical opening in the commutator end bracket and engaging a collar on the brush mechanism. The brush mechanism passes through a horizontal opening in the commutator end bracket which intersects with the vertical opening. Armature grounding is achieved by a disk maintained in a recess in the commutator end bracket and urged by a spring against the bearing receiving the motor shaft. The power wires to the motor are secured by a tab maintained opposite an opening in the commutator end bracket which is itself opposite an opening in the band. Power wires pass through the openings and over the tab, being crimped thereby.
REFERENCES:
patent: 2393900 (1946-01-01), Guertin
patent: 2514693 (1950-07-01), Chapman
patent: 3159354 (1964-12-01), Yartz
patent: 3875462 (1975-04-01), Kiefer
patent: 4063786 (1977-12-01), Rall
patent: 4226575 (1980-10-01), Hyatt
patent: 4384225 (1983-05-01), Iwaki
patent: 4434448 (1984-02-01), Bell
patent: 4593221 (1986-06-01), Harris
patent: 4613781 (1986-09-01), Sanders
Hyatt Robert L.
Kline, Jr. Leonard J.
Smith Francis E.
Ametek Inc.
Skudy R.
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