Magnetic drain plug

Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material

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181 625, H01F 702

Patent

active

059493178

ABSTRACT:
A magnet set forth used is in a drain plug. A drain plug is assembled with an attached holder securing an inserted cylindrical magnet. The drain plug is formed of non ferrous material such as brass, aluminum, stainless steel, etc. It is constructed in accordance with industry standards to fit as a replacement device in oil drain pans, and is non ferrous material. It incorporates an extending threaded shaft. The holder is constructed with an axial passage there through having threads at the small end for threading through the drain plug. The passage extends fully through the device, interrupted by a transverse internal registration shoulder at the middle, and defines an extending skirt fitting loosely around an elongate cylindrical rare earth magnet.

REFERENCES:
patent: 2755932 (1956-07-01), Cohn
patent: 4752759 (1988-06-01), Kazuyuki
patent: 4763092 (1988-08-01), Tomita
patent: 5420557 (1995-05-01), Chern
patent: 5465078 (1995-11-01), Jones, Jr.
patent: 5634755 (1997-06-01), Jones, Jr.

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