Patent US3858987A successfully refreshed from Google Patents.
US3858987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive shaft flange coupling structure having a fixed shear speed
Assignee: Siemens AG
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Filing: 1974-05-21
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Granted: 1975-01-07
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Expires: 1994-05-21
Abstract
Abstract A flange coupling structure for connecting the adjacent ends of a plurality of separate shafts each of which includes an annular flange coupled to the end thereof. A plurality of arcuate-shaped segments are disposed about each of the shaft flanges and form a ring thereabout. A breakable annular ring member is disposed about each ring of the segments, and a plurality of fastening means, such as bolts, coupled to the segments and flanges interconnect the shaft ends. The ring member of the structure breaks at a predetermined shaft speed under stress of the centrifugal force generated and permits the coupling structure to separate, thereby interrupting transmission of torque from one shaft to the other.
Inventors
- 👤 Siegfried Kleinhans
- 👤 Hans Kummlee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:32
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/02; F16D1/033; F16B; F16B2200/00; F16B2200/50; F16B2200/503; F16B2200/506; F16B2200/63
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
110 words
A flange coupling structure for connecting the adjacent ends of a plurality of separate shafts each of which includes an annular flange coupled to the end thereof, comprising: a plurality of arcuate-shaped segments, disposed about each of said shaft flanges and forming a ring thereabout; a breakable annular ring member disposed about each ring of said segments; and a plurality of fastening means, coupled to said ring segments and said flanges, for coupling the ends of the shafts, said ring segments including a plurality of spaced-apart apertures for receiving said fastening means, at least one half of the circumference of said apertures being disposed in said plurality of ring segments.
Claim 2
Dependent Claim
110 words
A flange coupling structure for connecting the adjacent ends of a plurality of separate shafts each of which includes an annular flange coupled to the end thereof, comprising: a plurality of arcuate-shaped segments, disposed about each of said shaft flanges and forming a ring thereabout; a breakable annular ring member disposed about each ring of said segments; and a plurality of fastening means, coupled to said ring segments and said flanges, for coupling the ends of the shafts, said ring segments including a plurality of spaced-apart apertures for receiving said fastening means, at least one half of the circumference of said apertures being disposed in said plurality of ring segments.
Claim 3
Dependent Claim
34 words
The coupling structure recited in claim 1, wherein the radial height of each segment ring and ring member in combination is approximately the same as the axial width of each of said shaft flanges.
Claim 4
Dependent Claim
24 words
The coupling structure recited in claim 1, wherein said apertures are disposed in said ring segments at the boundary surfaces thereof between adjacent segments.
Claim 5
Dependent Claim
20 words
The coupling structure recited in claim 1, wherein said apertures have the entire circumference thereof disposed in said ring segments.
References Cited (Backward Citations)
US292095A
Cited
US1637944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |