Filter device and fuel dispensing system comprised thereof
AssigneeWayne Fueling Systems LLC
InventorsBengt Ingemar Larsson, James David Dirocco, Jr.
Life of this patent
Estimating the term…
Abstract
Embodiments of a filter device for use in fuel dispensing systems can comprise an inspection element that permits visual observation of fuel that flows inside of the system. The filter device can include a body with a wall that forms a filter chamber. The wall can have one or more apertures that couple with a fuel inlet and a fuel outlet to allow fuel to flow into and about the filter chamber. In one embodiment, the body includes a boss member with a bore that penetrates the wall to expose the filter chamber. The inspection element includes an optical element that fits within the bore and a retaining element that secures to the boss member to retain the optical element therein.
Claims9
A filter device for a pump unit, comprising:
- a cylindrical body comprising a bottom and a wall coupled with the bottom, the wall circumscribing a center axis to form a filter chamber having an inner volume having a filter removably and replaceably disposed therein, the wall having a first aperture and having a second aperture allowing ingress and egress into the filter chamber from outside of the wall;
- a first tubular structure disposed on the wall and aligned with the second aperture, the first tubular structure having a first bore that extends from a first end of the first tubular structure that secures to the wall to a second end of the tubular structure that secures the cylindrical body on a suction side of the pump unit;
- and
- an inspection element disposed in position to seal the first aperture, the inspection element comprising an optical element that forms a line of sight to the inner volume through the first aperture;
- wherein when the filter is not disposed in inner volume, the line of sight extends to the first tubular structure through the second aperture;
- and
- wherein when the filter is disposed in the inner volume, the line of sight does not extend to the first tubular structure through the second aperture due to presence of the filter.
Dependencies are inferred from the claim text.