# US 4,393,956 A · Draining device used in a car-muffler

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- Number: US 4,393,956 A
- Document ID: US4393956A
- Status: Granted
- Kind: A
- Application number: 06/366,442
- Filed: 1982-04-07
- Granted: 1983-07-19
- Earliest claimed: 1981-04-08
- Assignees: Fuji Jukogyo Kabushiki Kaisha
- Inventors: Minoru Tsukui; Hiroshi Sekiguchi; Takatoshi Machida
- Web page: https://patentgrep.com/patent/US4393956A

## CPC

- F01N 3/005: {for draining or otherwise eliminating condensates or moisture accumulating in the apparatus (F01N3/02 takes precedence)}
- Y02T 10/12: Improving ICE efficiencies
- F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16)
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A draining device used in a car muffler includes a muffler body separated into three compartments A, B and C with water passing holes disposed to their bottoms, an inlet pipe communicated to the compartment B, two intermediary pipes used to communicate the exhaust gas between the compartments B and C, and C and A, an outlet pipe communicating with the compartment A which is disposed at the front side of the muffler, and a water drain path having inlet port opened to the bottom of the front side compartment A and outlet port opened to the surrounding portion of the outlet pipe.

## Claims

### Claim 1

A draining device used in a car-muffler characterized by comprising a hollow cylindrical muffler body having a plurality of compartments separated by means of partition plates with they having water passing holes disposed to their bottoms, and inlet pipe for exhaust gas communicated to one of the compartments except of that positioned in the front side of the muffler, some intermediary pipes used to communicate the exhaust gas between the compartments, an outlet pipe communicating with the front side compartment, and a water drain path having an inlet port opened to the bottom of the front side compartment and an outlet port opened to the surrounding portion of the outlet pipe.

### Claim 2 (depends on 1)

A draining device used in a car-muffler claimed in claim 1 in which the water drain path consists of a water duct member having a U-shaped cross section and attached to the wall of the partition plate in the front side compartment, the inlet of the outlet pipe is formed to the water duct member.

### Claim 3 (depends on 1)

A draining device used in a car-muffler claimed in claim 1 in which the water drain path consists of a water duct member having a U-shaped cross-section and attached to the wall of the partition plate in the front side compartment, the inlet of the outlet pipe consists of an elongated pipe protruded from the water duct member to the interior of the front side compartment.

### Claim 4 (depends on 2, 3)

A draining device used in a car-muffler claimed in claim 2 or 3 in which the inlet of the outlet pipe has a diameter smaller than that of the outlet pipe.