Patent US3680403A successfully refreshed from Google Patents.
US3680403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal clutch assembly
Assignee: AMF Inc
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Filing: 1970-08-27
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Granted: 1972-08-01
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Expires: 1990-08-27
Abstract
Abstract In a centrifugal clutch including a drive shaft, a pair of pulley flanges mounted on said drive shaft and providing therebetween a groove for a V-belt, one of the pulley flanges being axially movable on the drive shaft to vary the radial position of the V-belt with respect to the pulley flanges, apparatus for axially moving said movable pulley flange in response to the angular velocity of the drive shaft, comprising a cam ramp fixedly mounted to said drive shaft in spaced relationship with the side of the movable pulley flange away from the other pulley flange, said cam ramp including a portion curved toward said movable pulley flange, and a weight mounted for rolling radial movement on said movable pulley flange and on said cam ramp.
Inventors
- 👤 Fred A Schupan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:47
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/66; F16H61/662; F16H61/66231; F16H61/66245
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
216 words
In a centrifugal clutch including a drive shaft, a pair of pulley flanges mounted on said drive shaft and providing therebetween a groove for a V-belt, one of the pulley flanges being axially movable on the drive shaft to vary the radial position of the V-belt with respect to the pulley flanges, apparatus for axially moving said movable pulley flange in response to the angular velocity of the drive shaft, comprising: a cam ramp fixedly mounted to said drive shaft in spaced relationship with the side of the movable pulley flange away from the other pulley flange, said cam ramp including a portion curved toward said movable pulley flange, and a weight mounted for rolling radial movement on said movable pulley flange and on said cam ramp, and wherein said roller weight includes: a rod, a pair of wheels mounted on said rod for rolling engagement with said cam ramp, and a bearing of smaller diameter than the wheels is mounted on said rod between said wheels for rolling engagement with said pulley flange, and wherein said pulley flange includes a guideway extending toward the cam ramp radially outwardly therealong, and said wheels are mounted on the rod in positions spaced laterally away from the sides of the guideway such that the wheels are guided thereby.
Claim 2
Dependent Claim
216 words
In a centrifugal clutch including a drive shaft, a pair of pulley flanges mounted on said drive shaft and providing therebetween a groove for a V-belt, one of the pulley flanges being axially movable on the drive shaft to vary the radial position of the V-belt with respect to the pulley flanges, apparatus for axially moving said movable pulley flange in response to the angular velocity of the drive shaft, comprising: a cam ramp fixedly mounted to said drive shaft in spaced relationship with the side of the movable pulley flange away from the other pulley flange, said cam ramp including a portion curved toward said movable pulley flange, and a weight mounted for rolling radial movement on said movable pulley flange and on said cam ramp, and wherein said roller weight includes: a rod, a pair of wheels mounted on said rod for rolling engagement with said cam ramp, and a bearing of smaller diameter than the wheels is mounted on said rod between said wheels for rolling engagement with said pulley flange, and wherein said pulley flange includes a guideway extending toward the cam ramp radially outwardly therealong, and said wheels are mounted on the rod in positions spaced laterally away from the sides of the guideway such that the wheels are guided thereby.
Claim 3
Dependent Claim
27 words
Apparatus according to claim 1, wherein a pair of guide members are mounted on the cam ramp, spaced apart a distance sufficient to receive both wheels therebetween.
Claim 4
Dependent Claim
47 words
Apparatus according to claim 2, wherein a plurality of guideways are mounted on said pulley flange equidistantly therearound, a rolling weight is mounted on each guideway and a pair of guide members are mounted on the cam ramp to receive both wheels of each rolling weight therebetween.
Claim 5
Dependent Claim
203 words
In a centrifugal clutch including a drive shaft, a pair of pulley flanges mounted on said drive shaft and providing therebetween a groove for a V-belt, one of the pulley flanges being axially movable on the drive shaft to vary the radial position of the V-belt with respect to the pulley flanges, apparatus for axially moving said movable pulley flange in response to the angular velocity of the drive shaft, comprising: a cam ramp fixedly mounted to said drive shaft in spaced relationship with the side of the movable pulley flange away from the other pulley flange, said cam ramp including a portion curved toward said movable pulley flange, and a weight mounted for rolling radial movement on said movable pulley flange and on said cam ramp, and wherein said roller weight includes: a rod, a wheel bearingly mounted on said rod for rotation with respect thereto and rolling engagement with said cam ramp, a guideway mounted on said pulley flange and extending therefrom towards said cam ramp, said guideway having a recess therein to accept a portion of said wheel therein, and the rod of said roller weight being mounted for rolling engagement with said guideway on both sides of said recess.
Claim 6
Dependent Claim
203 words
In a centrifugal clutch including a drive shaft, a pair of pulley flanges mounted on said drive shaft and providing therebetween a groove for a V-belt, one of the pulley flanges being axially movable on the drive shaft to vary the radial position of the V-belt with respect to the pulley flanges, apparatus for axially moving said movable pulley flange in response to the angular velocity of the drive shaft, comprising: a cam ramp fixedly mounted to said drive shaft in spaced relationship with the side of the movable pulley flange away from the other pulley flange, said cam ramp including a portion curved toward said movable pulley flange, and a weight mounted for rolling radial movement on said movable pulley flange and on said cam ramp, and wherein said roller weight includes: a rod, a wheel bearingly mounted on said rod for rotation with respect thereto and rolling engagement with said cam ramp, a guideway mounted on said pulley flange and extending therefrom towards said cam ramp, said guideway having a recess therein to accept a portion of said wheel therein, and the rod of said roller weight being mounted for rolling engagement with said guideway on both sides of said recess.
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |