Patent US4966571A successfully refreshed from Google Patents.
US4966571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine
Assignee: Pneumatiques Caoutchouc Manufacture et Plastiques Kleber Colombes SA
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Filing: 1989-10-05
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Granted: 1990-10-30
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Expires: 2009-10-05
Abstract
Abstract Transmission tensioning pulley for flexible or articulated coupling, having a lever to compensate for thermal expansion and contraction, and regulated by a cam, characterized by the fact that under stable or transient conditions, the thermal expansions and contractions are compensated by the multiplier lever arm ratios and the length of the compensator bar.
Inventors
- 👤 Hubert de Guillebon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:19
CPC Classifications
F; F02; F02B; F02B67/00; F02B67/04; F02B67/06; F16; F16H; F16H7/00; F16H7/08; F16H7/10; F16H7/12; F16H2007/0802; F16H2007/0808; F16H2007/0889; F16H2007/0891; F16H2007/0893
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
375 words
An internal combustion engine comprising: mechanical power generation means having an operating system for generating mechanical power; first wheel means for being connected to and receiving mechanical power from said mechanical power generation means; second wheel means positioned at a spaced-apart distance from said first wheel means, said second wheel means being connected to and for receiving at least a portion of said mechanical power from said operating system; belt means having a surface, said belt means being connected between said first wheel means and said second wheel means for transferring mechanical power from said first wheel means to said second wheel means; and belt tension adjusting means for being in contact with said surface of said belt means for adjusting the tension of said belt means by applying a controlled amount of force to said surface of said belt means; said belt tension adjusting means comprising: force application means for being in contact with said surface of said belt means for applying said controlled amount of force to said surface of said belt means, support means relatively movable in directions toward and away from said surface of said belt means to adjust said controlled amount of force, and support moving means having a changeable length for being mechanically connected to said support means for moving said support means in directions toward and away from said surface of said belt means when said length of said support moving means changes; said support moving means having a preselected temperature expansion coefficient to change said length of said support moving means relative to at least one temperature or a range of operating temperatures of said engine, and said force application means, said support means and said support moving means each being relatively sized and each being relatively positioned with respect to said surface of said belt means; said preselected temperature expansion coefficient being selected for causing said controlled amount of force to be applied to said surface of said belt means relative to at least one temperature or a range of temperatures, whereby said belt tension adjusting means adjusts the tension of said belt means when a change in said temperatures causes said spaced-apart distance between said first wheel means and said second wheel means to change.
Claim 2
Dependent Claim
375 words
An internal combustion engine comprising: mechanical power generation means having an operating system for generating mechanical power; first wheel means for being connected to and receiving mechanical power from said mechanical power generation means; second wheel means positioned at a spaced-apart distance from said first wheel means, said second wheel means being connected to and for receiving at least a portion of said mechanical power from said operating system; belt means having a surface, said belt means being connected between said first wheel means and said second wheel means for transferring mechanical power from said first wheel means to said second wheel means; and belt tension adjusting means for being in contact with said surface of said belt means for adjusting the tension of said belt means by applying a controlled amount of force to said surface of said belt means; said belt tension adjusting means comprising: force application means for being in contact with said surface of said belt means for applying said controlled amount of force to said surface of said belt means, support means relatively movable in directions toward and away from said surface of said belt means to adjust said controlled amount of force, and support moving means having a changeable length for being mechanically connected to said support means for moving said support means in directions toward and away from said surface of said belt means when said length of said support moving means changes; said support moving means having a preselected temperature expansion coefficient to change said length of said support moving means relative to at least one temperature or a range of operating temperatures of said engine, and said force application means, said support means and said support moving means each being relatively sized and each being relatively positioned with respect to said surface of said belt means; said preselected temperature expansion coefficient being selected for causing said controlled amount of force to be applied to said surface of said belt means relative to at least one temperature or a range of temperatures, whereby said belt tension adjusting means adjusts the tension of said belt means when a change in said temperatures causes said spaced-apart distance between said first wheel means and said second wheel means to change.
Claim 3
Dependent Claim
13 words
The apparatus of claim 1, wherein said force application means is roller means.
Claim 4
Dependent Claim
15 words
The apparatus of claim 2, wherein said support means is pivotally supported adjacent said belt.
Claim 5
Dependent Claim
17 words
The apparatus of claim 3, wherein said support moving means is pivotally connected to said support means.
Claim 6
Dependent Claim
23 words
The apparatus of claim 4, wherein said support moving means pivots said support means toward and away from said surface of said belt.
Claim 7
Dependent Claim
16 words
The apparatus of claim 5, wherein said roller means is eccentrically mounted on said support means.
Claim 8
Dependent Claim
28 words
The apparatus of claim 6, further including fluid means for being circulated in contact with said support moving means for adjusting the temperature of said support moving means.
Claim 9
Dependent Claim
18 words
The apparatus of claim 7, further including frame means for rotatably supporting said first an second wheel means.
Claim 10
Dependent Claim
26 words
The apparatus of claim 2, wherein the thermal expansion coefficient of said frame means and said thermal expansion coefficient of said support moving means are unequal.
Claim 11
Dependent Claim
16 words
The apparatus of claim 9, wherein said support moving means is constructed of an iron-nickel alloy.
Claim 12
Dependent Claim
306 words
Belt tension adjusting means for being in contact with a surface of a belt, said belt being suspended by first and second wheel means positioned a spaced-apart distance from one another, said belt tension adjusting means for adjusting the tension of said belt by applying controlled force to said surface of said belt, said belt tension adjusting means comprising; force application means for being in contact with said surface of said belt of applying said controlled force to said surface of said belt; support means relatively movable in directions toward and away from said surface of said belt to adjust said controlled force; and support moving means having a changeable length for being mechanically connected to said support means for moving said support means in directions toward and away from said surface of said belt when said length of said support moving means changes; said support moving means having a preselected temperature expansion coefficient to change said length of said support moving means relative to at least one temperature or range of temperatures in the environs of said belt; and said force application means, said support means and said support moving means each being relatively sized and each being relatively positioned with respect to said surface of said belt; said preselected temperature expansion coefficient being selected for causing said controlled force to be applied to said surface of said belt relative to said at least one temperature or range of temperatures, whereby said belt tension adjusting means adjusts the tension of said belt when a change in said at least one temperature or said range of temperatures causes said spaced-apart distance between said first wheel and said second wheel to change. said belt when a change in said at least one temperature causes said spaced-apart distance between said first wheel and said second wheel to change.
Claim 13
Dependent Claim
306 words
Belt tension adjusting means for being in contact with a surface of a belt, said belt being suspended by first and second wheel means positioned a spaced-apart distance from one another, said belt tension adjusting means for adjusting the tension of said belt by applying controlled force to said surface of said belt, said belt tension adjusting means comprising; force application means for being in contact with said surface of said belt of applying said controlled force to said surface of said belt; support means relatively movable in directions toward and away from said surface of said belt to adjust said controlled force; and support moving means having a changeable length for being mechanically connected to said support means for moving said support means in directions toward and away from said surface of said belt when said length of said support moving means changes; said support moving means having a preselected temperature expansion coefficient to change said length of said support moving means relative to at least one temperature or range of temperatures in the environs of said belt; and said force application means, said support means and said support moving means each being relatively sized and each being relatively positioned with respect to said surface of said belt; said preselected temperature expansion coefficient being selected for causing said controlled force to be applied to said surface of said belt relative to said at least one temperature or range of temperatures, whereby said belt tension adjusting means adjusts the tension of said belt when a change in said at least one temperature or said range of temperatures causes said spaced-apart distance between said first wheel and said second wheel to change. said belt when a change in said at least one temperature causes said spaced-apart distance between said first wheel and said second wheel to change.
Claim 14
Dependent Claim
13 words
The apparatus of claim 11, wherein said force application means is roller means.
Claim 15
Dependent Claim
15 words
The apparatus of claim 12, wherein said support means is pivotally supported adjacent said belt.
Claim 16
Dependent Claim
17 words
The apparatus of claim 13, wherein said support moving means is pivotally connected to said support means.
Claim 17
Dependent Claim
23 words
The apparatus of claim 14, wherein said support moving means pivots said support means toward and away from said surface of said belt.
Claim 18
Dependent Claim
16 words
The apparatus of claim 15, wherein said roller means is eccentrically mounted on said support means.
Claim 19
Dependent Claim
18 words
The apparatus of claim 16, further including frame means for rotatably supporting said first an second wheel means.
Claim 20
Dependent Claim
26 words
The apparatus of claim 17, wherein the thermal expansion coefficient of said frame means and said thermal expansion coefficient of said support moving means are unequal.
Claim 21
Dependent Claim
30 words
The apparatus of claim 18, wherein said preselected temperature expansion coefficient of said support moving means is at least 50% lower than the thermal expansion coefficient of said frame means.
Claim 22
Dependent Claim
30 words
The apparatus of claim 18, wherein said preselected temperature expansion coefficient of said support moving means is at least 50% higher than the thermal expansion coefficient of said frame means.
Claim 23
Dependent Claim
37 words
The apparatus of claim 18, wherein said belt tension adjusting means compensates for changes in the spaced-apart distance between said first wheel and said second wheel by changing said controlled amount of force applied to said belt.
Claim 24
Dependent Claim
40 words
The apparatus of claim 21, wherein said support means and said support moving means are relatively positioned to generally precisely compensate for a change in the spaced-apart distance between said first wheel and said second wheel under stabilized thermal conditions.
Claim 25
Dependent Claim
39 words
The apparatus of claim 21, wherein said support means and said support moving means are relatively positioned to only partly compensate for changes in said spaced-apart distance between said first wheel and said second wheel under stabilized thermal conditions.
Claim 26
Dependent Claim
40 words
The apparatus of claim 21, wherein said support means and said support moving means are relatively positioned to at least partly compensate for changes in said spaced-apart distance between said first wheel and said second wheel under transient thermal conditions.
Claim 27
Dependent Claim
28 words
The apparatus of claim 12, further including fluid means for being circulated in contact with said support moving means for adjusting the temperature of said support moving means.
Claim 28
Dependent Claim
16 words
The apparatus of claim 12, wherein said support moving means is constructed of an iron-nickel alloy.
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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) | 1993-10-29 | 1994-04-30 | 1994-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-29 | 1998-04-30 | 1998-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-29 | 2002-04-30 | 2002-10-30 | $7700.00 | Window Closed / Lapsed |