# US 8,783,223 B2 · Oil pan

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- Number: US 8,783,223 B2
- Document ID: US8783223B2
- Status: Granted
- Kind: B2
- Application number: 13/266,682
- Filed: 2009-04-30
- Published: 2012-08-16
- Granted: 2014-07-22
- Earliest claimed: 2009-04-30
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Applicants: Yukio Koseki; Motoichi Murakami; Norio Inami; Ryuji Koike
- Inventors: Yukio Koseki; Motoichi Murakami; Norio Inami; Ryuji Koike
- Web page: https://patentgrep.com/patent/US8783223B2

## CPC

- F01M 11/0004: {Oilsumps}
- F16N 19/00: Lubricant containers for use in lubricators or lubrication systems
- F01M 2011/005: {with special anti-turbulence means, e.g. anti-foaming means or intermediate plates}
- F02B 77/11: Thermal or acoustic insulation
- F01M: LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F16N: LUBRICATING
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)

## Abstract

The present invention is provided with a configuration which makes it possible to inhibit contact between an oil (L) and a gas in an oil pan (10a) properly. The oil pan (10a) according to the present invention contains a film (S1) which covers an oil surface (F) of the oil (L) to separate the stored oil (L) and the gas above the oil (L). The film (S1) can float by receiving buoyancy in the oil (L). The film (S1) may be formed of a liquid. The film also may be configured by a film member.

## Claims

### Claim 1

An oil pan comprising:
a film configured to cover an oil surface of an oil to be stored in the oil pan so as to separate the oil from a gas above the oil,
wherein the film is formed of a liquid.

### Claim 2 (depends on 1)

The oil pan according to claim 1, wherein the liquid contains a silicone oil.

### Claim 3 (depends on 1)

The oil pan according to claim 1, wherein the film can float by receiving buoyancy in the oil.

### Claim 4

An oil pan comprising:
a film configured to cover an oil surface of an oil to be stored in the oil pan so as to separate the oil from a gas above the oil, the film being configured by a film member,
wherein the film member is a sheet made of silicone.

### Claim 5 (depends on 4)

The oil pan according to claim 4, wherein the film member can float by receiving buoyancy in the oil.

### Claim 6 (depends on 4)

The oil pan according to claim 4,
wherein the film member includes an oil deterioration inhibitor on a surface portion of the film member.

### Claim 7

An oil pan comprising:
a film configured to cover an oil surface of an oil to be stored in the oil pan so as to separate the oil from a gas above the oil, the film being configured by a film member; and
one or a plurality of support rod members provided in the oil pan and fixed to a bottom portion of the oil pan, wherein each of the support rod members penetrates through an opening portion provided in the film member.

### Claim 8 (depends on 7)

The oil pan according to claim 7, wherein the film member can float by receiving buoyancy in the oil.

### Claim 9 (depends on 7)

The oil pan according to claim 7, wherein the support rod member is provided with an oil drop passage.

### Claim 10 (depends on 9)

The oil pan according to claim 9,
wherein the support rod member is connected to a baffle plate, and the oil drop passage communicates with an oil drop hole of the baffle plate.

### Claim 11 (depends on 7)

The oil pan according to claim 7,
wherein the film member includes an oil deterioration inhibitor on a surface portion of the film member.