Suspension system for vehicles containing combination isolator mount and air spring closure
US4796870A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 1987 |
| Grant date | Jan 10, 1989 |
| Priority date | — |
| Expiry date | May 18, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/472
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A suspension system for a vehicle having a shock absorber strut with a reciprocal rod located within a cylinder and an air spring having a fluid pressure chamber wherein the piston rod and cylinder extend through the chamber. The air spring includes a rigid annular canister and a flexible sleeve, one end of which is sealingly connected to the cylinder and the other end connected to the open bottom of the canister. An elastomeric isolator is bonded to a lower side of an end cap which is adapted to be secured to the vehicle. The isolator also is bound to and encloses the open upper end of the canister to close the pressure chamber of the air spring and to resiliently mount the air spring to the vehicle. An opening is formed in the isolator for sealingly receiving the upper end of the piston rod therethrough. The bonding of the end cap to the air spring canister by the isolator provides the fluid seal for the piston rod and dual path isolation for the suspension unit with a reduced number of parts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.