Metal reinforced pump cover of an electrically driven air pump

Details Metal reinforced pump cover of an electrically driven air pump Metal reinforced pump cover of an electrically driven air pump

1995-09-28

1998-10-20

Freay, Charles

Pumps

Motor driven

Electric or magnetic motor

415200, 415915, F04B 3912, F04D 2902

Patent

active

058237534

ABSTRACT:
An electrically driven air pump has a housing incorporating an electric motor in one section of the housing and a pump mechanism coupled to the motor in another section of the housing. The housing has a pump cover enclosing the pump mechanism, made of plastic and having an end wall to which a metal reinforcement member is joined by injection molding. The metal reinforcement member is formed as a ring having inner and outer perimetral surfaces and a plurality of radial slots are formed in the ring for passage of the plastic material therethrough to anchor the reinforcement member to the end wall. The slots extend from the inner perimetral surface of the ring towards the outer perimetral surface but terminate before reaching the outer perimetral surface. The outer perimetral surface of the metal reinforcement member is free and unobstructed for undergoing dimensional change due to temperature variation.

REFERENCES:
patent: 4234291 (1980-11-01), Hurst et al.
patent: 4639191 (1987-01-01), Hart
patent: 5055006 (1991-10-01), Kobayashi et al.

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