US3779354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective overspeed torque coupling
Assignee: BW IP International Inc
•
Filing: 1971-11-10
•
Granted: 1973-12-18
•
Expires: 1991-11-10
Abstract
Abstract A rotatable coupling adapted to transmit torque between a driving unit and a driven unit such as a centrifugal pump including a first member adapted to rotate with a second member, a linkage mechanism such as meshing gears or dogs normally locking the first member from rotation with respect to the second member and a release mechanism responsive to rotational speed of the coupling which will release the linkage mechanism at a predetermined rotational speed over normal speed and permit free rotation of the first member with respect to the second member.
Inventors
- 👤 R Ball
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:00
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/02; F04D15/00; F04D15/0077; F16; F16D; F16D43/00; F16D43/02; F16D43/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
277 words
A protective torque transmitting rotary overspeed disconnect coupling comprising: a driving member, a driven member, bearing means rotatably mounting said driving member to said driven member for relative rotation about an axis, torque transfer means releasably connecting said driving member and said dRiven member in torque transmitting relation with each other, said torque transfer means comprising a torque driving member having teeth and extending from said driving member, a torque driven member having teeth and extending from said driven member, and a torque transfer member having teeth releasably meshing with said teeth of said driving member and said teeth of said driven member respectively when said torque transfer member is in a first position, said teeth being constructed and arranged to transmit torque between said driving and driven members in either angular sense about said axis, means mounting said torque transfer member for movement from said first position to a second position in which its teeth are out of mesh with the teeth of said torque driving member and the teeth of said torque driven member respectively, resilient means for moving said torque transfer member from said first position to said second position, rigid releasable support means responsive to centrifugal force for holding said torque transfer member in said first position and releasable responsive to centrifugal force of preselected magnitude for releasing said torque transfer member to permit it to be moved from said first position to said second position responsive to said resilient means, means for connecting said driving member to a rotatable drive shaft in alignment with said axis, and means for connecting said driven member to a driven shaft in alignment with said axis.
Claim 2
Dependent Claim
277 words
A protective torque transmitting rotary overspeed disconnect coupling comprising: a driving member, a driven member, bearing means rotatably mounting said driving member to said driven member for relative rotation about an axis, torque transfer means releasably connecting said driving member and said dRiven member in torque transmitting relation with each other, said torque transfer means comprising a torque driving member having teeth and extending from said driving member, a torque driven member having teeth and extending from said driven member, and a torque transfer member having teeth releasably meshing with said teeth of said driving member and said teeth of said driven member respectively when said torque transfer member is in a first position, said teeth being constructed and arranged to transmit torque between said driving and driven members in either angular sense about said axis, means mounting said torque transfer member for movement from said first position to a second position in which its teeth are out of mesh with the teeth of said torque driving member and the teeth of said torque driven member respectively, resilient means for moving said torque transfer member from said first position to said second position, rigid releasable support means responsive to centrifugal force for holding said torque transfer member in said first position and releasable responsive to centrifugal force of preselected magnitude for releasing said torque transfer member to permit it to be moved from said first position to said second position responsive to said resilient means, means for connecting said driving member to a rotatable drive shaft in alignment with said axis, and means for connecting said driven member to a driven shaft in alignment with said axis.
Claim 3
Dependent Claim
37 words
A protective coupling as defined in claim 1 wherein said means mounting said torque transfer member mounts said torque transfer member on said driven member, and said rigid releasable support means is carried by said driving member.
Claim 4
Dependent Claim
76 words
A protective coupling as defined in claim 2 wherein said support means comprises a first radial support plate on said torque transfer member, a second radial support plate on said driven member, a rigid support member received in compression between and abutting said support plates, said support member being movable radially outwardly from between said support plates responsive to centrifugal force for releasing said torque transfer member, and resilient means biasing said support member radially inwardly.
Claim 5
Dependent Claim
21 words
A protective coupling as defined in claim 1 including latch means for retaining said torque transfer member in said second position.
Claim 6
Dependent Claim
15 words
A protective coupling as defined in claim 1 wherein said teeth are of curvate configuration.
Claim 7
Dependent Claim
25 words
A protective coupling as defined in claim 1 wherein said bearing means provide radial and thrust support between said driving member and said driven member.
Claim 8
Dependent Claim
26 words
A protective coupling as defined in claim 1 wherein said drive shaft is driven by an electric motor and said driven shaft drives a centrifugal pump.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |