US3880134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine in sound-proof casing
Assignee: Individual
•
Filing: 1973-11-09
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Granted: 1975-04-29
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Expires: 1993-11-09
Abstract
Abstract An internal combustion engine with a soundproof casing comprising shafts and lines extending through the casing walls, wherein their passages through the casing wall are each sealed off by means of an elastic packing consisting of an outer and an inner metal ring and an elastic and oil- and heat-resistant membrane vulcanized in between and attached both to the casing wall and to a tubular extension of the engine body concentrically surrounding the shaft or line.
Inventors
- 👤 Gerhard Thien
- 👤 Heinz Fachbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:05
CPC Classifications
F; F02; F02B; F02B77/00; F02B77/11; F02B77/13
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
156 words
An internal combustion engine with a soundproof casing having casing walls surrounding the engine body and perforations provided in the casing walls for the passage of shafts and lines, comprising a tubular extension for each shaft or line surrounding the latter in concentrical relation thereto and protruding from said engine body and extending as far as into the perforation for the passage of the associated shaft or line, an elAstic packing sealing the perforation off against the outside and formed as an annular element comprising an inner metal ring, an outer metal ring in concentrical relation to the former and an annular arcuate membrane of an elastic, oil- and heat-resistant material, said membrane being vulcanized between said inner and said outer metal ring, said inner metal ring being tightly attached to said tubular extension of the engine body, and the outer metal ring being tightly attached to the casing wall in the area of the perforation.
Claim 2
Dependent Claim
156 words
An internal combustion engine with a soundproof casing having casing walls surrounding the engine body and perforations provided in the casing walls for the passage of shafts and lines, comprising a tubular extension for each shaft or line surrounding the latter in concentrical relation thereto and protruding from said engine body and extending as far as into the perforation for the passage of the associated shaft or line, an elAstic packing sealing the perforation off against the outside and formed as an annular element comprising an inner metal ring, an outer metal ring in concentrical relation to the former and an annular arcuate membrane of an elastic, oil- and heat-resistant material, said membrane being vulcanized between said inner and said outer metal ring, said inner metal ring being tightly attached to said tubular extension of the engine body, and the outer metal ring being tightly attached to the casing wall in the area of the perforation.
Claim 3
Dependent Claim
58 words
An internal combustion engine according to claim 1, comprising a first cylindrical fitting area provided on the periphery of said tubular extension, a second cylindrical fitting area concentrically opposite the first-mentioned fitting area and provided on the casing wall in the area of said perforation, said annular element being inserted by pressing between the two cylindrical fitting areas.
Claim 4
Dependent Claim
65 words
An internal combustion engine according to claim 1, comprising a radially outwardly protruding collar on the outer metal ring, a radially inwardly protruding collar on the inner metal ring, said annular element being attached by means of the radially outwardly protruding collar to the casing wall in the area of said perforation and by means of the radially inwardly protruding collar to the tubular extension.
Claim 5
Dependent Claim
31 words
An internal combustion engine according to claim 3, wherein said annular element with the two collars is attached to the casing wall and to the tubular extension by means of bolts.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |