IP Library › Granted Patent US 12680483
Granted Patent B2
US 12680483 · App. 19/061,091 · Granted Jul 14, 2026

Engine-oil dipstick having a magnet

Inventor: Kerry Cromer (Akron, OH)
F01M11/12F01M11/03F01M2001/1042F01M2011/031
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Quick Facts
Patent No.
US 12680483
App. No.
19/061,091
Granted
Jul 14, 2026
Kind
B2
Abstract

An engine-oil dipstick having a magnet having a cap assembly that is configured to removably attach to a dipstick entry orifice of a combustion-engine sump; a dipstick element having a first end and a second end; the first end of the dipstick element attached to the cap assembly; a magnet that generates a magnetic field, the magnet having a first half and a second half; the second half of the magnet being closer to the second end of the dipstick than the first half of the magnet; the second half of the magnet being substantially encapsulated within the dipstick element.

Claims (22)

1 . An engine-oil dipstick having a magnet comprising:

a cap assembly that is configured to removably attach to a dipstick entry orifice of a combustion-engine sump;

a dipstick element having a first end and a second end;

the first end of the dipstick element attached to the cap assembly;

a magnet that generates a magnetic field,

the magnet having a first half and a second half;

the second half of the magnet being closer to the second end of the dipstick than the first half of the magnet;

the second half of the magnet being substantially encapsulated within the dipstick element;

the dipstick element having a dipstick-element first half that includes the first end and a dipstick-element second half that includes the second end; and

an orifice in the dipstick-element second half configured to allow visibility of the magnet.

2 . An engine-oil dipstick having a magnet comprising:

a cap assembly that is configured to removably attach to a dipstick entry orifice of a combustion-engine sump;

a dipstick element having a first end and a second end;

the first end of the dipstick element attached to the cap assembly;

a magnet that generates a magnetic field,

the magnet having a first half and a second half;

the second half of the magnet being closer to the second end of the dipstick than the first half of the magnet;

the second half of the magnet being substantially encapsulated within the dipstick element;

the second half of the magnet having a second-half-of-the-magnet surface area;

the portion of the second end of the dipstick that substantially encapsulates the second half of the magnet having an exterior surface;

the exterior surface having an exterior-surface surface area; and

the exterior-surface surface area being greater than the second-half-of-the-magnet surface area.