Patent US4178778A successfully refreshed from Google Patents.
US4178778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Homokinetic joint of the tripod type
Assignee: Glaenzer Spicer SA
•
Filing: 1978-02-23
•
Granted: 1979-12-18
•
Expires: 1998-02-23
Abstract
Abstract The joint comprises a tripod connected to one of the two shafts to be coupled by the joint and defining three trunnions on which three part-spherical rollers are mounted. A second member of the joint is connected to the other shaft and defines three raceways in which the rollers are received. The tripod constitutes a member which is distinct from the shaft associated with the tripod and is connected to this associated shaft by an auxiliary homokinetic coupling. The latter is capable of operating at an angle of displacement which is small relative to the maximum angle of displacement of the two shafts coupled by the joint.
Inventors
- 👤 Michel Orain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:17
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/16; F16D3/20; F16D3/202; F16D3/205; F16D3/2055; Y; Y10; Y10S; Y10S464/00; Y10S464/904; Y10S464/905
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
100 words
A tripod homokinetic joint comprising a first shaft, a second shaft, a first member constituting a tripod and connected to the first shaft and defining three trunnions, three part-spherical rollers respectively rotatably mounted on the trunnions, and a second member connected to said second shaft and defining three raceways in which said rollers are respectively received, the tripod being distinct from the first shaft, and an auxiliary homokinetic coupling capable of operating at an angle of displacement which is small relative to the maximum angle of displacement of said first and second shafts connecting the tripod to the first shaft.
Claim 2
Dependent Claim
100 words
A tripod homokinetic joint comprising a first shaft, a second shaft, a first member constituting a tripod and connected to the first shaft and defining three trunnions, three part-spherical rollers respectively rotatably mounted on the trunnions, and a second member connected to said second shaft and defining three raceways in which said rollers are respectively received, the tripod being distinct from the first shaft, and an auxiliary homokinetic coupling capable of operating at an angle of displacement which is small relative to the maximum angle of displacement of said first and second shafts connecting the tripod to the first shaft.
Claim 3
Dependent Claim
38 words
A joint as claimed in claim 1, wherein said coupling comprises a member rigid with the first shaft and two complementary series of teeth respectively formed on the tripod and on said member rigid with the first shaft.
Claim 4
Dependent Claim
23 words
A joint as claimed in claim 1, comprising thrust means and axial retaining means interposed between the tripod and one of said shafts.
Claim 5
Dependent Claim
19 words
A joint as claimed in claim 1, comprising centering means interposed between the tripod and one of said shafts.
Claim 6
Dependent Claim
42 words
A joint as claimed in claim 1, wherein said first shaft comprises at an end thereof nearest to the joint an enlargement which is rigid with said first shaft and defines a cavity in which the tripod is at least partly received.
Claim 7
Dependent Claim
25 words
A joint as claimed in claim 5, wherein said enlargement defines an internal series of teeth in a part thereof nearest to said first shaft.
Claim 8
Dependent Claim
47 words
A joint as claimed in claim 5, wherein said enlargement has a cylindrical shape and comprises inner splines, teeth rigid with the tripod being complementary with and engaged with the splines, means being provided for centering and axially retaining the tripod with respect to said second member.
Claim 9
Dependent Claim
22 words
A joint as claimed in claim 5, wherein the enlargement comprises notches for the passage of the trunnions carried by the tripod.
Claim 10
Dependent Claim
26 words
A joint as claimed in claim 3, wherein the thrust means between the tripod and one of said shaft comprise at least one part-spherical bearing surface.
Claim 11
Dependent Claim
48 words
A joint as claimed in claim 3, wherein the axial retaining means comprise a ring, means for blocking the ring with respect to said one of said shafts, the ring defining a part-spherical bearing surface, and a complementary bearing surface on the tripod cooperating with the part-spherical surface.
Claim 12
Dependent Claim
40 words
A joint as claimed in claim 3, wherein the retaining means between the tripod and said one of said shafts are placed between an end of the tripod adjacent said one of said shafts and the trunnions of the tripod.
Claim 13
Dependent Claim
37 words
A joint as claimed in claim 3, wherein the retaining means between the tripod and said one of said shafts are placed at an end of the tripod the most remote from said one of said shafts.
Claim 14
Dependent Claim
32 words
A joint as claimed in claim 3, wherein the two shafts have complementary centering means comprising means defining two part-spherical bearing surfaces and respectively rigid with the first shaft and second shaft.
References Cited (Backward Citations)
US2861438A
Cited
US2897663A
Cited
US3310960A
Cited
US3564868A
Cited
US3906747A
Cited
DE2355823A1
Cited
US4003218A
Cited
US4068499A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-17 | 1983-06-18 | 1983-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-17 | 1987-06-18 | 1987-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-17 | 1991-06-18 | 1991-12-18 | $7700.00 | Window Closed / Lapsed |