Geometrical instruments – Distance measuring – Sounding type
Patent
1997-11-10
2000-02-01
Wong, Peter S.
Geometrical instruments
Distance measuring
Sounding type
33722, 33730, G01B 300
Patent
active
060188820
ABSTRACT:
An improved oil dipstick wiper assembly is provided herein. The oil dipstick wiper assembly includes a hollow housing having a central longitudinal bore having an upper end and a lower end for accommodating an oil dipstick. The hollowing housing includes an upper rectangular slotted plate which is disposed at the upper end of the central longitudinal bore for guiding the oil dipstick in longitudinal sliding movement, while substantially-simultaneously preventing rotation of the oil dipstick. Resilient wipers are provided which impinge into a major extent of the central longitudinal bore for wiping contact with an oil dipstick which is moved relatively longitudinally and non-rotationally thereto. Oil catchers are provided which are associated with the resilient wipers and which are disposed vertically therebelow. These oil catchers extend into the longitudinal bore out of contact with the oil dipstick, for catching oil which is wiped off of oil dipstick by the resilient wipers when the oil dipstick is in its longitudinal non-rotational sliding movement, and the hollow housing is selectively releasable from engagement with an oil dipstick guide tube which is secured to an engine. The selective releasability is provided by springs which are disposed within the longitudinal bore at the lower end thereof. In use the hollow housing and the oil dipstick are selectively-longitudinally-movable as a unit, and the oil dipstick is alternatively longitudinally, slidingly, and non-rotationally-selectively-movable by itself with respect to the hollow housing; and when the oil dipstick is longitudinally-moved by itself out of the hollow housing, oil is wiped off of the oil dipstick by wiping contact of the oil dipstick with the resilient wiper means, and, when the oil dipstick is returned to the hollow housing and is inserted into an oil sump of the engine and when a unit comprising the hollow housing and the oil dipstick is removed from engagement with the oil dipstick guide tube, oil remains on the oil dipstick so that the level of oil in the oil sump can be determined.
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Marcus Martin
Tibbits Pia
Wong Peter S.
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