US4548306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate separator
Assignee: Motors Liquidation Co
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Filing: 1984-04-30
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Granted: 1985-10-22
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Expires: 2004-04-30
Abstract
Abstract A plate separator for a multiplate clutch includes a circular spine and integral bifurcations extending in opposite directions from the spine. The plate separator is disposed in an annulus defined by a pair of outer friction plates and an interposed inner friction plate. When the outer friction plates clamp the inner friction plate, the bifurcations flex at their junctures with the spine. When the inner friction plate is released, the bifurcations unflex to separate the outer plates from the inner plate.
Inventors
- 👤 James F. Hartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:56
CPC Classifications
F; F16; F16D; F16D25/00; F16D25/06; F16D25/062; F16D25/063; F16D25/0635; F16D25/0638; F16D13/00; F16D13/22; F16D13/38; F16D13/52; F16D13/58; F16D13/60; F16D13/64; F16D13/69; F16D2300/00; F16D2300/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
268 words
In a clutch having a pair of outer friction plates supported on a first member of said clutch for bodily shiftable movement along an axis of said clutch, an inner friction plate between said outer friction plates supported on a second member of said clutch rotatable on said axis relative to said first member, said inner friction plate cooperating with said outer friction plates in defining an outer annulus around said axis, and pressure means selectively operable to compress and clamp said inner friction plate between said outer friction plates thereby to rigidly connect said first and said second members, a unitary plate separator in said annulus comprising, a circular spine extending 360° around said axis and disposed in a transverse plane perpendicular thereto, means defining a first bifurcation integral with said spine and projecting to one side of said transverse plane, means defining a second bifurcation integral with said spine and projecting to the other side of said transverse plane, each of said bifurcations having an end engageable by an adjacent one of said outer friction plates when said pressure means clamps said inner friction plate between said outer friction plates whereby said bifurcations are resiliently flexed generally at their junctures with said spine, each of said bifurcations thereafter unflexing to space apart said outer friction plates a distance exceeding the thickness of said inner friction plate, means defining a radially extending tab on said plate separator integral with said spine, and slot means on said first member operative to slidably receive said tab whereby relative rotation between said plate separator and said first member is foreclosed.
Claim 2
Dependent Claim
268 words
In a clutch having a pair of outer friction plates supported on a first member of said clutch for bodily shiftable movement along an axis of said clutch, an inner friction plate between said outer friction plates supported on a second member of said clutch rotatable on said axis relative to said first member, said inner friction plate cooperating with said outer friction plates in defining an outer annulus around said axis, and pressure means selectively operable to compress and clamp said inner friction plate between said outer friction plates thereby to rigidly connect said first and said second members, a unitary plate separator in said annulus comprising, a circular spine extending 360° around said axis and disposed in a transverse plane perpendicular thereto, means defining a first bifurcation integral with said spine and projecting to one side of said transverse plane, means defining a second bifurcation integral with said spine and projecting to the other side of said transverse plane, each of said bifurcations having an end engageable by an adjacent one of said outer friction plates when said pressure means clamps said inner friction plate between said outer friction plates whereby said bifurcations are resiliently flexed generally at their junctures with said spine, each of said bifurcations thereafter unflexing to space apart said outer friction plates a distance exceeding the thickness of said inner friction plate, means defining a radially extending tab on said plate separator integral with said spine, and slot means on said first member operative to slidably receive said tab whereby relative rotation between said plate separator and said first member is foreclosed.
Claim 3
Dependent Claim
43 words
The plate separator recited in claim 1 wherein each of said first and said second bifurcations extends substantially 360° around said axis so that said first and said second bifurcations cooperate with said spine in defining an inverted V in transverse cross section.
Claim 4
Dependent Claim
48 words
The plate separator recited in claim 1 wherein said spine is an annular flange disposed in said transverse plane and each of said first and said second bifurcations is an arc segment of said flange splayed at an angle to said transverse plane and on opposite sides thereof.
References Cited (Backward Citations)
DE646120C
Cited
US2199801A
Cited
US2174240A
Cited
US2217357A
Cited
US2226309A
Cited
GB691317A
Cited
US3171522A
Cited
US3249189A
Cited
US3486588A
Cited
DE1903360A1
Cited
US3584720A
Cited
US3613848A
Cited
US3747729A
Cited
DE2316571A1
Cited
US4144955A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-21 | 1989-04-22 | 1989-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-21 | 1993-04-22 | 1993-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-21 | 1997-04-22 | 1997-10-22 | $7700.00 | Window Closed / Lapsed |