US3988948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine with torsional-vibration balancer
Assignee: Individual
•
Filing: 1975-03-04
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Granted: 1976-11-02
•
Expires: 1995-03-04
Abstract
Abstract An internal combustion engine comprising a torsional-vibration balancer mounted on one end of the crankshaft and carrying a fan-wheel blower, said torsional-vibration balancer being enclosed in a sound-absorbing casing having an admission aperture and a discharge aperture for the cooling air.
Inventors
- 👤 Gerhard Thien
- 👤 Heinz Fachbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:42
CPC Classifications
F; F02; F02B; F02B77/00; F02B77/11; F02B77/13; F16; F16F; F16F15/00; F16F15/10; F16F15/16; F16F15/167; F16F15/173; F16F2222/00; F16F2222/02; F16F2222/025
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
77 words
An internal combustion engine with a torsional-vibration balancer mounted at one end of the crankshaft, comprising a fan-wheel blower attached to an outer front face of said torsional-vibration balancer, a sound-proofing casing covering said torsional-vibration balancer and said fan-wheel blower and defining a blower housing for said fan-wheel blower, said casing having a cooling-air admission aperture connected with the suction end of the blower and a cooling-air discharge aperture connected with the delivery end of the blower.
Claim 2
Dependent Claim
77 words
An internal combustion engine with a torsional-vibration balancer mounted at one end of the crankshaft, comprising a fan-wheel blower attached to an outer front face of said torsional-vibration balancer, a sound-proofing casing covering said torsional-vibration balancer and said fan-wheel blower and defining a blower housing for said fan-wheel blower, said casing having a cooling-air admission aperture connected with the suction end of the blower and a cooling-air discharge aperture connected with the delivery end of the blower.
Claim 3
Dependent Claim
40 words
An internal combustion engine according to claim 1, further comprising two sound-absorbers arranged inside said casing, one sound absorber being located in the area of said cooling-air admission aperture and the other in the area of said cooling-air discharge aperture.
Claim 4
Dependent Claim
38 words
An internal combustion engine according to claim 1, further comprising an engine housing in the area of the extremity of the crankshaft carrying the torsional-vibration balancer, said sound-proofing casing covering at least also part of said engine housing.
Claim 5
Dependent Claim
40 words
An internal combustion engine according to claim 1, further comprising a control wheel housing in the area of the extremity of the crankshaft carrying the torsional-vibration balancer, said sound-proofing casing covering at least also part of said control wheel housing.
Claim 6
Dependent Claim
17 words
An internal combustion engine according to claim 1, wherein said blower is designed as a radial blower.
Claim 7
Dependent Claim
24 words
An internal combustion engine according to claim 1, further comprising a flywheel mounted on said crankshaft at the opposite end from said torsional-vibration balancer.
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) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |