Patent US3461671A successfully refreshed from Google Patents.
Patent US4184471A successfully refreshed from Google Patents.
US4184471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound proof encapsulated engine, especially an internal combustion engine
Assignee: Individual
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Filing: 1978-04-24
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Granted: 1980-01-22
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Expires: 1998-04-24
Abstract
Abstract A sound proof encapsulated engine, particularly an internal combustion engine, comprising a fan and an intermediate support for the fan, the fan being driven by an elastic element and mounted on the engine case with the aid of the intermediate support by means of a number of bearing faces, the fan bearing housing and the fan drive being accommodated within the encapsulation, and between the engine case and each of the bearing faces being provided an intermediate support having n elastic and body-transmitted sound-absorbing element.
Inventors
- 👤 Karl Kirchweger
- 👤 Gerhard Thien
- 👤 Heinz Fachbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:36
CPC Classifications
F; F02; F02B; F02B77/00; F02B77/11; F02B77/13; F02B67/00; F02B67/04; F02B67/06; F02B2275/00; F02B2275/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
111 words
A sound proof encapsulated engine, particularly an internal combustion engine, comprising an engine case, a sound-suppressing outer casing surrounding said engine case, a fan, a fan shaft supporting said fan, a housing surrounding said shaft, a fan drive coupled with said shaft, an intermediate support mounted on said housing and being secured to said engine case for supporting said fan, said support being secured to said engine case by means of a plurality of elastic sound-absorbing elements respectively located at a plurality of bearing points, said housing lying partially within said outer casing, and said fan drive, said intermediate support and said sound-absorbing elements being disposed wholly within said outer casing.
Claim 2
Dependent Claim
111 words
A sound proof encapsulated engine, particularly an internal combustion engine, comprising an engine case, a sound-suppressing outer casing surrounding said engine case, a fan, a fan shaft supporting said fan, a housing surrounding said shaft, a fan drive coupled with said shaft, an intermediate support mounted on said housing and being secured to said engine case for supporting said fan, said support being secured to said engine case by means of a plurality of elastic sound-absorbing elements respectively located at a plurality of bearing points, said housing lying partially within said outer casing, and said fan drive, said intermediate support and said sound-absorbing elements being disposed wholly within said outer casing.
Claim 3
Dependent Claim
53 words
The engine according to claim 1, wherein said intermediate support comprises a support assembly having a plurality of legs corresponding to said plurality of bearing points, said sound-absorbing elements being disposed between said legs and said engine case, and said bearing points being spaced remote distances from the rotational axis of said fan.
Claim 4
Dependent Claim
23 words
The engine according to claim 2, wherein three of said legs are provided for said assembly, and said legs being of unequal length.
Claim 5
Dependent Claim
54 words
The engine according to claim 1, wherein said housing extends partially outwardly of said outer casing and is spaced therefrom by an annular gap between said housing and said casing, sealing means closing said gap and extending between and secured to said housing and said casing, said sealing means comprising a concertina-pleated rubber boot.
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) | 1983-01-21 | 1983-07-23 | 1984-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-21 | 1987-07-23 | 1988-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-21 | 1991-07-23 | 1992-01-22 | $7700.00 | Window Closed / Lapsed |