Rotary shafts – gudgeons – housings – and flexible couplings for ro – Torque transmitted via flexible element – Coil spring
Reexamination Certificate
1998-09-11
2001-04-24
Browne, Lynne H. (Department: 3629)
Rotary shafts, gudgeons, housings, and flexible couplings for ro
Torque transmitted via flexible element
Coil spring
Reexamination Certificate
active
06220966
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a torque transmitting and torsion damping apparatus for use in motor vehicles.
BACKGROUND OF THE INVENTION
U.S. Pat. No. 4,727,970 (issued Mar. 1, 1988 to Reik et al.), U.S. Pat. No. 4,890,710 (issued Jan. 2, 1990 to Reik et al.), and JP-B 6-97060 (published Nov. 30, 1994) disclose a torque transmitting and torsion damping apparatus. This known apparatus comprises a torsion damper disposed between coaxial first and second inertia bodies, which rotate about an axis with limited relative rotation to each other. The torsion damper include a drive plate assembly and a coupling using rivet pins for connecting a portion of the drive plate assembly in the neighborhood of the outer periphery thereof to the first inertia body. According to this known connection between the first inertia body and the drive plate assembly of the torsion damper, the rivet pins bear stress during transmission of torque. This involves the potential problem that the structural strength accomplished by the first coupling may drop below a satisfactory level under severe operating conditions.
An object of the present invention is to provide a torque transmitting and torsion damping apparatus employing a torsion damper, which provide sufficiently high and stable structural strength between a drive plate assembly of the torsion damper and the adjacent inertia body.
SUMMARY OF THE INVENTION
According to the present invention, there is provided a torque transmitting and torsion damping apparatus comprising:
a first inertia body;
a second inertia body,
said first and second inertia bodies being coaxial for rotation about an axis and for relative rotation to each other;
a torsion damper between said first and second inertia body,
said torsion damper including a drive plate assembly for rotation with one of said first and second inertia bodies, a damper hub for rotation with the other inertia body, and spring assembly between said drive plate assembly and said damper hub for resiliently allowing relative rotation therebetween,
said drive plate assembly having a radially outer periphery and a radially inner periphery, with respect to said axis;
a first coupling disposed in the neighborhood of said radially inner periphery of said drive plate assembly for connecting said drive plate assembly to said one inertia body; and
a second coupling disposed in the neighborhood of said radially outer periphery of said drive plate assembly for connecting said drive plate assembly to said one inertia body.
REFERENCES:
patent: 902523 (1908-10-01), Dalton
patent: 2834213 (1958-05-01), Fredericks
patent: 4727970 (1988-03-01), Reik et al.
patent: 4890710 (1990-01-01), Reik et al.
patent: 4986398 (1991-01-01), Olsen
patent: 5590752 (1997-01-01), Takehira et al.
patent: 6047804 (2000-04-01), Feldhaus et al.
patent: 6-97060 (1986-10-01), None
Ara Hirofumi
Harima Toshio
Ichinose Masato
Shibata Daisuke
Tsuchiya Shoichi
Binda Greg
Browne Lynne H.
Foley & Lardner
Unisia Jecs Corporation
LandOfFree
Torque transmitting and torsion damping apparatus with... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Torque transmitting and torsion damping apparatus with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Torque transmitting and torsion damping apparatus with... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2523338