US4393956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Draining device used in a car-muffler
Assignee: Subaru Corp
•
Filing: 1982-04-07
•
Granted: 1983-07-19
•
Expires: 2002-04-07
Abstract
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.
Inventors
- 👤 Minoru Tsukui
- 👤 Hiroshi Sekiguchi
- 👤 Takatoshi Machida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:38
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/005; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
111 words
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
Dependent Claim
111 words
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 3
Dependent Claim
55 words
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 4
Dependent Claim
66 words
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 5
Dependent Claim
31 words
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.
References Cited (Backward Citations)
US3177971A
Cited
US3741336A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-18 | 1987-01-17 | 1987-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-18 | 1991-01-17 | 1991-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-18 | 1995-01-17 | 1995-07-19 | $7700.00 | Window Closed / Lapsed |