US3820408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed variators
Assignee: Individual
•
Filing: 1971-04-12
•
Granted: 1974-06-28
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Expires: 1991-04-12
Abstract
Abstract In a stepless variator of speed comprising tilting discs in contact under pressure with two coaxial curvilinear respectively driving and driven cone and in view to obtain in all cases better mechanical efficiency: a system of guiding for the tilting movement of a disc formed of three couples of contacting cams, one of each couple fixed the other solidary with the support of the disc; a device to obtain exactly equal speeds at the points of contact of the discs and the cones and the combination of two thrust supporting systems for the exit cone one of which supporting a load only above a given value of the thrust.
Inventors
- 👤 G Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:02
CPC Classifications
F; F16; F16H; F16H15/00; F16H15/02; F16H15/04; F16H15/44
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
216 words
In a variable speed transmission, or variator, comprising, in a casing, driving and driven abutted axles operatively connected respectively with, two coaxial input and output members in form of cones having toroidal surfaces, a plurality of circumferentially spaced profiled disks disposed between and in driving contact with said surfaces and transmitting the torque from the input member to the output member, for each disk: a concentric axle maintaining said disk, a support for each axle, rollers contacting the support to maintain the axis of the disk in a radial plane of the variator and means to impose to the support and the disk the speed-varying tilting movement: a guiding system of the support for said tilting movement comprising only, for each disk: on one hand three cams solid with the casing, on the other hand three cams solid with the support of the disk and disposed to contact in as many points, respectively the three cams fixed on the casing; the cams of one contacting pair being preferably separated in two halves placed on each side of the radial plane of the axis of the disk; the instantaneous axis of rotation of the support in its tilting movement being the intersection of the planes normal to the profiles of the cams at their points of contact.
Claim 2
Dependent Claim
216 words
In a variable speed transmission, or variator, comprising, in a casing, driving and driven abutted axles operatively connected respectively with, two coaxial input and output members in form of cones having toroidal surfaces, a plurality of circumferentially spaced profiled disks disposed between and in driving contact with said surfaces and transmitting the torque from the input member to the output member, for each disk: a concentric axle maintaining said disk, a support for each axle, rollers contacting the support to maintain the axis of the disk in a radial plane of the variator and means to impose to the support and the disk the speed-varying tilting movement: a guiding system of the support for said tilting movement comprising only, for each disk: on one hand three cams solid with the casing, on the other hand three cams solid with the support of the disk and disposed to contact in as many points, respectively the three cams fixed on the casing; the cams of one contacting pair being preferably separated in two halves placed on each side of the radial plane of the axis of the disk; the instantaneous axis of rotation of the support in its tilting movement being the intersection of the planes normal to the profiles of the cams at their points of contact.
Claim 3
Dependent Claim
28 words
A mechanism according to claim 1 in which one cam of each contacting pair is circular, in form of a roller, and free to turn around its axis.
Claim 4
Dependent Claim
32 words
A mechanism according to claim 2 in which the circular cams of two pairs are merged into one, the two other cams of these pairs acting on opposite sides of the former.
Claim 5
Dependent Claim
50 words
A mechanism of the kind described in which the tilting movement of the disks is obtained by the action on organs solid with their supports of spiraloid grooves or tenons machined in a plate perpendicular to the axis of the cones and substantially centered on the axis of the cones.
Claim 6
Dependent Claim
50 words
A mechanism of the kind described in which the tilting movement of the disks is obtained by the action on organs solid with their supports of spiraloid grooves or tenons machined in a plate perpendicular to the axis of the cones and substantially centered on the axis of the cones.
Claim 7
Dependent Claim
19 words
A mechanism according to claim 4 in which the plate is free to have small Displacements in its plane.
Claim 8
Dependent Claim
125 words
In a mechanism according to claim 1: an abutment system for the driven abutted axle comprising, in combination: a socket solid with this axle, a first coaxial thrust bearing contacting on one face this socket, a collar sliding axially contacting the other face of said thrust bearing, an elastic member pushing the collar against the bearing, a fixed shoulder limiting the displacement of the collar; a second larger thrust bearing supported by the casing and whose free face is constructionaly at a distance of a few hundredths of millimeter from the socket, contact taking place between the socket and this second thrust bearing when the thrust on the abutted axle surpasses the force applied by the spring on the collar contacting the first thrust bearing.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |