Fluid-filled insulating bushing
US5657510A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1995 |
| Grant date | Aug 19, 1997 |
| Priority date | — |
| Expiry date | Jun 14, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F13/14
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fluid-chamber space 21 of an elastic block 20 interposed between an outer cylinder 10 and an inner cylinder 30 is partitioned into two chambers by means of an elastic wall 40, whose inner edges 44 are engaged to an engaging groove of an elastic wall mount 24, and outer edges 46 are clamped between end portions of two fluid-chamber covers 50 covering an open portion of the fluid-chamber space 21. When pressed into the outer cylinder 10 in this state, even when the elastic wall 40 deforms elastically by fluid pressure, since a contact portion with the elastic block 20 around the elastic wall 40 is moveable, the internal pressure rise is suppressed and the concentration of stress is relieved, thus low-action spring and high attenuation characteristics are obtained and durability is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.