US4395249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable speed drive clutch
Assignee: First National Bank of Minneapolis
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Filing: 1980-12-22
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Granted: 1983-07-26
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Expires: 2000-12-22
Abstract
Abstract In a V-belt drive having a rotating pulley and an annular flange formed about the pulley axis and extending axially from a side of the pulley; a plurality of vanes extending from the radial outer surface of the flange; a plurality of air passages extending through the flange with each passage having an axis directed radially outwardly and toward the plane of said pulley, said passages being close to but in trailing relation to a vane.
Inventors
- 👤 Keni K. Prasad
- 👤 Eugene G. Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:54
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/04; F16H57/0412; F16H55/00; F16H55/32; F16H55/52; F16H55/56; F16H55/563; F16H57/05
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
86 words
In a V-belt drive having a rotating pulley and an annular flange closely adjacent the pulley periphery formed about the pulley axis and extending axially from a side of the pulley; a plurality of vanes extending radially from the radial outer surface of the flange; said flange having means including air passages extending through the flange for directing air outwardly and toward the center plane of the pulley, said passages being close to but in trailing relation with respect to respective vanes extending from the flange.
Claim 2
Dependent Claim
86 words
In a V-belt drive having a rotating pulley and an annular flange closely adjacent the pulley periphery formed about the pulley axis and extending axially from a side of the pulley; a plurality of vanes extending radially from the radial outer surface of the flange; said flange having means including air passages extending through the flange for directing air outwardly and toward the center plane of the pulley, said passages being close to but in trailing relation with respect to respective vanes extending from the flange.
Claim 3
Dependent Claim
35 words
The invention defined in claim 1 in which the vanes are inclined with respect to the direction of travel to effect movement of air moving through the passages toward the center plane of the pulley.
Claim 4
Dependent Claim
19 words
The invention defined in claim 1 in which the passages extend radially outwardly and axially inwardly through the flange.
Claim 5
Dependent Claim
100 words
In a V-belt drive having a rotating pulley, mechanism alongside and rotatable with the pulley for effecting radial movement of air; an annular flange closely adjacent the pulley's periphery and rotatable with and extending from the side of the pulley and positioned to block a portion of the radially moving air, said flange having means including air passages therein permitting a portion of the air to move through the flange and directing said portions of air to move toward the center plane of said pulley; and a plurality of vanes extending radially from the radial outer surface of the flange.
Claim 6
Dependent Claim
100 words
In a V-belt drive having a rotating pulley, mechanism alongside and rotatable with the pulley for effecting radial movement of air; an annular flange closely adjacent the pulley's periphery and rotatable with and extending from the side of the pulley and positioned to block a portion of the radially moving air, said flange having means including air passages therein permitting a portion of the air to move through the flange and directing said portions of air to move toward the center plane of said pulley; and a plurality of vanes extending radially from the radial outer surface of the flange.
Claim 7
Dependent Claim
37 words
The invention defined in claim 4 characterized by the air passages extending radially outwardly and axially inwardly to be effective as the means for redirecting a portion of the air toward the center plane of said pulley.
Claim 8
Dependent Claim
109 words
In a V-belt drive having a rotating variable speed pulley, mechanism alongside and rotatable with the pulley for effecting opening and closing of the pulley and effecting radial movement of air; an annular flange rotatable with and extending from a side of the pulley and positioned to block a portion of the radially moving air, said flange having air passages therein for redirecting a portion of the moving air through the flange and toward the center plane of said pulley; and vanes outwardly of the flange drawing air through the passages and across said mechanism for cooling the latter and a V-belt as it enters and leaves the pulley.
Claim 9
Dependent Claim
109 words
In a V-belt drive having a rotating variable speed pulley, mechanism alongside and rotatable with the pulley for effecting opening and closing of the pulley and effecting radial movement of air; an annular flange rotatable with and extending from a side of the pulley and positioned to block a portion of the radially moving air, said flange having air passages therein for redirecting a portion of the moving air through the flange and toward the center plane of said pulley; and vanes outwardly of the flange drawing air through the passages and across said mechanism for cooling the latter and a V-belt as it enters and leaves the pulley.
Claim 10
Dependent Claim
98 words
In a V-belt drive having a rotating pulley and an angular flange formed about the pulley axis and extending outwardly from a side of the pulley; a plurality of radially, outwardly and axially inwardly directed air passages extending through the flange; and vanes extending outwardly from the outer surface of the flange for generating movement of air through the passages, said vanes being close to and in advance of the passages, and said vanes having leading surfaces that are inclined from an inner radial end to an outermost radial end that is in advance of the inner end.
Claim 11
Dependent Claim
98 words
In a V-belt drive having a rotating pulley and an angular flange formed about the pulley axis and extending outwardly from a side of the pulley; a plurality of radially, outwardly and axially inwardly directed air passages extending through the flange; and vanes extending outwardly from the outer surface of the flange for generating movement of air through the passages, said vanes being close to and in advance of the passages, and said vanes having leading surfaces that are inclined from an inner radial end to an outermost radial end that is in advance of the inner end.
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) | 1986-07-25 | 1987-01-24 | 1987-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-25 | 1991-01-24 | 1991-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-25 | 1995-01-24 | 1995-07-26 | $7700.00 | Window Closed / Lapsed |