US3813134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration dampers
Assignee: REACTOR CENTRUM NL
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Filing: 1972-06-23
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Granted: 1974-05-28
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Expires: 1992-06-23
Abstract
Abstract A vibration damper for a fast spinning body of revolution rotating about a vertical axis, said vibration damper comprising a vessel filled with damping liquid, a radially movable damping member contained in said vessel and immersed in said liquid and a curling membrane forming an end wall of said vessel and attached with its one end portion to said vessel and with its other end portion to said damping member.
Inventors
- 👤 P Wijnant
- 👤 R Louwaard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:01
CPC Classifications
F; F16; F16C; F16C27/00; B; B04; B04B; B04B5/00; B04B5/08; B04B9/00; B04B9/12; B04B9/14; F16C27/08; F16F; F16F15/00; F16F15/02; F16F15/023
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
226 words
In combination a body of revolution mounted for rapid rotation about a vertical axis on a thrust bearing which includes at least two cooperating relatively rotatable bearing members and a vibration damper comprising a vessel having a vertical axis which is substantially in line with the axis of revolution of said body, a damping member contained in said vessel and adapted to move radially therein against a resetting force, a radially flexible curling diaphragm surrounding the vertical axis of the vessel, said curling diaphragm having inner and outer vertical concentric cylindrical portions interconnected by an annular bent portion and being so attached only at and near its outer edge with the rim of the vessel and only at and near its inner edge with the end portion of the damping member nearest to said vessel rim, as to hermetically close the vessel and to allow the damping member to make radial movements, the space confined by the vessel, the damping member and the curling diaphragm being completely or except for some small gas bubbles filled with liquid, and a vertical resiliently flexible rod for applying said resetting force to the damping member, said rod having a lower end which is clamped in a stationary part and an upper end which supports the damping member, one of said bearing members and the damping member being rigidly interconnected.
Claim 2
Dependent Claim
226 words
In combination a body of revolution mounted for rapid rotation about a vertical axis on a thrust bearing which includes at least two cooperating relatively rotatable bearing members and a vibration damper comprising a vessel having a vertical axis which is substantially in line with the axis of revolution of said body, a damping member contained in said vessel and adapted to move radially therein against a resetting force, a radially flexible curling diaphragm surrounding the vertical axis of the vessel, said curling diaphragm having inner and outer vertical concentric cylindrical portions interconnected by an annular bent portion and being so attached only at and near its outer edge with the rim of the vessel and only at and near its inner edge with the end portion of the damping member nearest to said vessel rim, as to hermetically close the vessel and to allow the damping member to make radial movements, the space confined by the vessel, the damping member and the curling diaphragm being completely or except for some small gas bubbles filled with liquid, and a vertical resiliently flexible rod for applying said resetting force to the damping member, said rod having a lower end which is clamped in a stationary part and an upper end which supports the damping member, one of said bearing members and the damping member being rigidly interconnected.
Claim 3
Dependent Claim
106 words
A vibration damper as claimed in claim 1, in which the vessel is coaxially rigidly connected in upside down position to the lower end of the body of revolution and the damping member has the shape of an inverted cup and in which the bearing member attached to said damping member is a downwards pointing pintle having a spherical lower end, said pintle being rigidly connected to the bottom of the cup-shaped damping member, and the other bearing member is a socket for the spherical end of said pintle, said socket being attached to the upper end of and supported by said vertical resiliently flexible rod.
Claim 4
Dependent Claim
31 words
A vibration damper as claimed in claim 1, in which the axial dimension of the inner portion of the diaphragm is greater than the axial dimension of the outer vertical portion.
Claim 5
Dependent Claim
33 words
A vibration damper as claimed in claim 1, in which the damping member and the curling diaphragm are interconnected in or near a horizontal plane containing the tilting point of the damping member.
Claim 6
Dependent Claim
32 words
A vibration damper as claimed in claim 1, including means for adjusting the axial position of the resiliently flexible rod in respect of the stationary part in which said rod is clamped.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |