Patent US4545466A successfully refreshed from Google Patents.
US4545466A
Expired / Lapsed
US
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Vibration damping apparatus
Assignee: Oiles Industry Co Ltd
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Filing: 1984-05-21
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Granted: 1985-10-08
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Expires: 2004-05-21
Abstract
Abstract Disclosed is a vibration damping apparatus incorporated in the crossing of diagonal members such as braces of a framed structure for damping vibration imparted by external force such as an earthquake or a strong wind. The apparatus comprises a plurality of rotatable members or discs, a resistive body disposed between the discs, and a pair or pairs of link bars causing relative rotation of the discs in response to the impartation of the external force, whereby the vibration is damped by the resistance force of the resistive body resisting to the external force.
Inventors
- 👤 Jiro Izeki
- 👤 Ikuo Shimoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:15
CPC Classifications
F; F16; F16F; F16F7/00; F16F7/02; E; E04; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/98; F16F1/00; F16F1/36; F16F1/42; F16F1/50; F16F2236/00; F16F2236/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
175 words
A vibration damping apparatus comprising at least two rotatable members disposed opposite to each other while defining a gap therebetween so as to be rotatable relative to each other around substantially a single axis of rotation, four link bars pivoted to each other at their both ends by pins so as to constitute a quadric crank mechanism capable of turning around the axes of the pins, and a resistive body disposed in the gap between said rotatable members, the two link bars disposed opposite to each other among said four link bars being coupled at their middle points to the corresponding points of one of said rotatable members respectively, which points are spaced apart by the same distance from the axis of rotation of said rotatable member, the remaining two link bars disposed opposite to each other being coupled at their middle points to the corresponding points of the other of said rotatable members respectively, which points are spaced apart by the same distance from the axis of rotation of said the other rotatable member.
Claim 2
Dependent Claim
175 words
A vibration damping apparatus comprising at least two rotatable members disposed opposite to each other while defining a gap therebetween so as to be rotatable relative to each other around substantially a single axis of rotation, four link bars pivoted to each other at their both ends by pins so as to constitute a quadric crank mechanism capable of turning around the axes of the pins, and a resistive body disposed in the gap between said rotatable members, the two link bars disposed opposite to each other among said four link bars being coupled at their middle points to the corresponding points of one of said rotatable members respectively, which points are spaced apart by the same distance from the axis of rotation of said rotatable member, the remaining two link bars disposed opposite to each other being coupled at their middle points to the corresponding points of the other of said rotatable members respectively, which points are spaced apart by the same distance from the axis of rotation of said the other rotatable member.
Claim 3
Dependent Claim
136 words
A vibration damping apparatus as claimed in claim 1, wherein said rotatable members are two, the two link bars disposed opposite to each other among said four link bars are directly coupled at their middle points to the corresponding points of one of said rotatable members respectively, which points are located near the periphery of said rotatable member and are spaced apart by the same distance from the axis of rotation of said rotatable member, and the remaining two links bars disposed opposite to each other are directly coupled at their middle points to the corresponding points of the other of said rotatable members respectively, which points are located near the periphery of said other rotatable member and are spaced apart by the same distance from the axis of rotation of said the other rotatable member.
Claim 4
Dependent Claim
125 words
A vibration damping apparatus as claimed claim 2, wherein said rotatable members are more than two, the two links bars disposed opposite to each other among said four link bars are indirectly coupled at their middle points to ears formed on every other rotatable members which rotate in the same direction, which ears are oppositely spaced apart by the same distance from the center of said rotatable members, and the remaining two link bars disposed opposite to each other are indirectly coupled at their middle points to ears formed on every other rotatable members which rotate in a direction reverse to that of the first rotatable members, which ears are oppositely spaced apart by the same distance from the center of said second rotatable member.
Claim 5
Dependent Claim
21 words
A vibration damping apparatus as claimed in claims 1, 2, or 3 wherein said resistive body comprises a high viscosity material.
Claim 6
Dependent Claim
20 words
A vibration damping apparatus as claimed in claim 1, 2, or 3 wherein said resistive body comprises a resilient member.
Claim 7
Dependent Claim
28 words
A vibration damping apparatus as claimed in claim 1, 2, or 3 wherein said resistive body comprises a combination of a high viscosity material and a resilient member.
References Cited (Backward Citations)
GB191019595A
Cited
US1850876A
Cited
US3568806A
Cited
US3907079A
Cited
JPS5433452A
Cited
JPS5433662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-07 | 1989-04-08 | 1989-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-07 | 1993-04-08 | 1993-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-07 | 1997-04-08 | 1997-10-08 | $7700.00 | Window Closed / Lapsed |