Patent US4596535A successfully refreshed from Google Patents.
US4596535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction mechanism in a damper disc
Assignee: Exedy Corp
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Filing: 1985-03-06
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Granted: 1986-06-24
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Expires: 2005-03-06
Abstract
Abstract A friction mechanism in a damper disc has a cylindrical hub adapted to connect to an output device and having a radial flange. A pair of side plates are connected to an input member and disposed at respective sides of the flange. A sub-plate is disposed between the side plate and the flange. A torsion spring twistably connects the flange and the side plates together. The mechanism includes a first friction device for a first torsion operation; and a second friction device for a second torsion operation. The sub-plates are adapted to torsionally turn with respect to one of the flange and the side plates in a first torsion operation and to torsionally turn with respect to the other of the flange and the side plates in a second torsion operation. The first and second friction devices are radially shifted to each other and are disposed independently of each other.
Inventors
- 👤 Syougo Ooga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:47
CPC Classifications
F; F16; F16D; F16D13/00; F16F; F16F15/00; F16F15/10; F16F15/12; F16F15/129; F16D13/58; F16D13/60; F16D13/64
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
246 words
A friction mechanism in a damper disc comprising: a cylindrical hub adapted to connect to an output means and having an outer periphery with a first diameter and a radial flange; a pair of side plates connected to an input member and disposed at respective sides of the flange; a pair of sub-plates, each sub-plate disposed between the corresponding side plate and the flange and having an inner periphery with a second diameter, the second diameter being greater than the first diameter so that the side plates extend radially inwardly beyond the inner periphery of the sub-plates; a torsion spring twistably connecting the flange and the side plates together; a first friction device assembled in the disc for a first torsion operation, said first friction device being interposed between the inner periphery of the sub-plate and the outer periphery of the hub and between the side plate and the flange; a second friction device assembled in the disc for a second torsion operation, the second friction device being disposed axially beside the sub-plate and radially around the outside the first friction device; said sub-plates being adapted to torsionally turn with respect to one of the flange and the side plates in a first torsion operation and to torsionally turn with respect to the other of the flange and the side plates in a second torsion operation; said first and second friction devices being radially displaced relative to each other and being independently operable of each other.
Claim 2
Dependent Claim
246 words
A friction mechanism in a damper disc comprising: a cylindrical hub adapted to connect to an output means and having an outer periphery with a first diameter and a radial flange; a pair of side plates connected to an input member and disposed at respective sides of the flange; a pair of sub-plates, each sub-plate disposed between the corresponding side plate and the flange and having an inner periphery with a second diameter, the second diameter being greater than the first diameter so that the side plates extend radially inwardly beyond the inner periphery of the sub-plates; a torsion spring twistably connecting the flange and the side plates together; a first friction device assembled in the disc for a first torsion operation, said first friction device being interposed between the inner periphery of the sub-plate and the outer periphery of the hub and between the side plate and the flange; a second friction device assembled in the disc for a second torsion operation, the second friction device being disposed axially beside the sub-plate and radially around the outside the first friction device; said sub-plates being adapted to torsionally turn with respect to one of the flange and the side plates in a first torsion operation and to torsionally turn with respect to the other of the flange and the side plates in a second torsion operation; said first and second friction devices being radially displaced relative to each other and being independently operable of each other.
Claim 3
Dependent Claim
39 words
A friction mechanism in a damper disc of claim 1 wherein said first friction device has an end provided with a cylindrical projection fitted between the inner periphery of the side plate and the outer periphery of the hub.
Claim 4
Dependent Claim
62 words
A friction mechanism in a damper disc of claim 1 wherein said first friction device includes an annular spring seated directly on the side plate and adapted to press the first friction device against the flange, and said second friction device includes an annular spring seated directly on the side plate and adapted to press the second friction device against the subplate.
Claim 5
Dependent Claim
54 words
A friction mechanism in a damper disc of claim 1 wherein said second friction device includes: a member which is slidably and directly pressed against the sub-plate, an annular spring seated on the side plate, and an intermediate member unrotatably connected to the side plate and disposed between the member and the annular spring.
Claim 6
Dependent Claim
54 words
The friction mechanism in a damper disc of claim 4 wherein said intermediate member includes a plurality of generally axially extending projections; wherein one of said side plates includes a corresponding plurality of axial recesses to slidably receive the axially extending projections so as to unrotatably connect the side plate and the slide member.
References Cited (Backward Citations)
US3931876A
Cited
US4144959A
Cited
US4222476A
Cited
US4212380A
Cited
US4433770A
Cited
US4478326A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-23 | 1989-12-23 | 1990-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-23 | 1993-12-23 | 1994-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-23 | 1997-12-23 | 1998-06-24 | $7700.00 | Window Closed / Lapsed |