US6079385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for driving engine accessories
Assignee: Mercedes Benz Group AG
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Filing: 1998-06-13
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Granted: 2000-06-27
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Expires: 2018-06-13
Abstract
Abstract In an arrangement for driving accessories of an internal combustion engine such as a water pump and a fan by means of a V-belt drive operated by an engine crankshaft wherein a first belt pulley is mounted on the crankshaft for rotation therewith, a second pulley is mounted on a water pump shaft to be driven by the first pulley via a first V-belt, a third pulley is mounted on the water pump shaft for rotation therewith and a fourth pulley is rotatably mounted on the crankshaft or an extension thereof and driven by the third pulley via a second V-belt and a fan is mounted for rotation with the fourth pulley via clutch so that the fan can be operated at a speed different from the crankshaft speed.
Inventors
- 👤 Wolfgang Wicke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:03
CPC Classifications
F; F02; F02B; F02B67/00; F02B67/04; F02B67/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
136 words
An arrangement for driving a fan of an internal combustion engine by means of a V-belt drive operated by an engine crankshaft, said arrangement comprising: a first belt pulley mounted on said crankshaft for rotation therewith, a second pulley mounted on a water pump drive shaft so as to be driven by said crankshaft via a first V-belt extending around said first and second pulleys and forming a first belt drive, a third belt pulley mounted on said water pump drive shaft for rotation therewith, a fourth pulley supported by said crankshaft so as to be rotatable relative thereto, and a second belt extending around said third and fourth pulleys for drivingly connecting said third pulley to said fourth pulley and forming a second belt drive, and a fan mounted for rotation with said fourth pulley.
Claim 2
Dependent Claim
136 words
An arrangement for driving a fan of an internal combustion engine by means of a V-belt drive operated by an engine crankshaft, said arrangement comprising: a first belt pulley mounted on said crankshaft for rotation therewith, a second pulley mounted on a water pump drive shaft so as to be driven by said crankshaft via a first V-belt extending around said first and second pulleys and forming a first belt drive, a third belt pulley mounted on said water pump drive shaft for rotation therewith, a fourth pulley supported by said crankshaft so as to be rotatable relative thereto, and a second belt extending around said third and fourth pulleys for drivingly connecting said third pulley to said fourth pulley and forming a second belt drive, and a fan mounted for rotation with said fourth pulley.
Claim 3
Dependent Claim
26 words
An arrangement according to claim 1, wherein said first belt drive includes additional auxiliary engine aggregates which are all driven by way of said first V-belt.
Claim 4
Dependent Claim
37 words
An arrangement according to claim 1, wherein said fourth pulley is connected, by way of a flange, to a clutch and said fan is connected to said clutch to be driven thereby when said clutch is engaged.
Claim 5
Dependent Claim
25 words
An arrangement according to claim 1, wherein said fourth pulley is rotatably supported on an extension of said crank shaft by an anti-friction bearing structure.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-06-27 | 2003-12-27 | 2004-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-06-27 | 2007-12-27 | 2008-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-06-27 | 2011-12-27 | 2012-06-27 | $7700.00 | Window Closed / Lapsed |