Universal joint
Abstract
Abstract A UNIVERSAL OR CARDAN COUPLING OR JOINT COMPRISES A FIRST BODY FORMED WITH A SPOON-SHAPED FLATTENED END PORTION IN THE FORM OF A TONGUE AND A SECOND BODY FORMED WITH A CYLINDRICAL SEAT LYING TRANSVERSE TO THE ROTATION AXIS OF THE SECOND BODY. A BEARING COMPRISING TWO ELONGATED BEARING MEMBERS OF SEMICIRCULAR CROSS SECTION OR A SINGLE MEMBER OF CIRCULAR SECTION IS RECEIVED IN THIS SEAT AND DEFINES A FLATTENED-SECTION CHANNEL, RETAINING THE FLATTENED END PORTION BETWEEN ITS FLAT SURFACES. THE OUTSIDE OF THE BEARING IS FORMED WITH A RIDGE FITTING A CIRCUMFERENTIAL GROOVE IN THE SEAT WHILE THE FLATTENED END IS FORMED WITH GROOVES ON ITS OPPOSITE FACES WHICH RECEIVE RESPECTIVE BUMPS ON THE FLAT FACES OF THE BEARING MEMBERS. THESE RIDGES AND BUMPS CONSTITUTE MATING FORMATIONS WHICH SERVE TO CENTER THE FIRST BODY IN THE BEARING AND TO CENTER THE BEARING IN THE SEAT OF THE SECOND BODY.
Inventors
- 👤 Jurgen Ulderup
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |