Zero turning radius mower oil extension kit

Patent metadata

Field	Value
Publication number	US-11326488-B2
Application number	US-202016891617-A
Country	US
Kind code	B2
Filing date	Jun 3, 2020
Priority date	Jun 3, 2020
Publication date	May 10, 2022
Grant date	May 10, 2022

Abstract

A zero turning radius mower oil extension kit includes a supplemental oil tank that may be installed under a wet sump of a zero turning radius mower engine. A plurality of conduits may be installed between the supplemental oil tank and at least one drain port of the engine for continuously circulating a volume of oil between the supplemental oil tank and the wet sump of the engine while the engine is running. The kit extends the time between oil changes because of the increased volume of oil in the supplemental oil tank and the wet sump.

First claim

The invention claimed is:

1. A zero turning radius mower oil extension kit, comprising:
a supplemental oil tank mounted below an engine sump of a rear mounted zero turning radius mower engine;
an oil pump that continuously pumps a sufficient volume of oil from a drain port of the engine sump to keep the supplemental oil tank full while the engine is running, and forcing any excess volume of oil from the supplemental oil tank back to the engine sump.

2. The zero turning radius mower oil extension kit of claim 1 wherein the oil pump is in the engine sump.

3. The zero turning radius mower oil extension kit of claim 1 wherein the oil pump is an electric pump.

4. The zero turning radius mower oil extension kit of claim 1 further comprising a restricted orifice in a conduit between the oil pump and the supplemental oil tank.

5. A zero turning radius mower oil extension kit, comprising:
a supplemental oil tank mounted underneath a wet sump of a zero turning radius mower engine;
an oil circulation pump that continuously removes oil from the engine sump and pumps the removed oil to either an oil cooler or the supplemental oil tank whereby the supplemental oil tank stays completely filled without any air space;
an orifice limiting an oil flow from the wet sump of the engine to the supplemental oil tank;
a first conduit from the supplemental oil tank back to a first drain port of the engine; and
a second conduit from the supplemental oil tank back to a second drain port of the engine.

6. A zero turning radius mower oil extension kit, comprising:
a supplemental oil tank installed under a wet sump of a zero turning radius mower engine;
a plurality of conduits installed between the supplemental oil tank and at least one drain port of the engine for continuously circulating a volume of oil between the supplemental oil tank and the wet sump of the engine while the engine is running;
the volume of oil completely filling the supplemental oil tank and forcing any overflow of oil to the wet sump.

7. The zero turning radius mower oil extension kit of claim 6 , further comprising an oil pump in the wet sump.

8. The zero turning radius mower oil extension kit of claim 7 wherein the oil pump is reversible.

Assignees

• Deere & Co

Inventors

• Lewis Timothy J
• Buchholz Brian S
• Krause Casey L

Classifications

• F01M11/0004

  Oilsumps · CPC title

• F01M2011/0095

  Supplementary oil tank · CPC title

• F01M11/0458 Primary

  Lubricant filling and draining · CPC title