Air suspension
US4673171A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 14, 1984 |
| Grant date | Jun 16, 1987 |
| Priority date | — |
| Expiry date | Dec 14, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/084
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An air suspension comprises a shock absorber having a piston rod in which a control rod for adjusting damping force is disposed, an air spring having a main air chamber and an auxiliary air chamber, a valve body for affording and shutting off communication between both air chambers to adjust the spring constant of the air spring, a support connected to a car body and including a rigid member with which the piston rod is coupled and in which the valve body is disposed and a bushing disposed diametrically outward of the rigid member and having a hole opened to the auxiliary air chamber and an actuator fixed to the piston rod above the support to operate the control rod and valve body. The actuator is provided with an electric motor, a gear fixed to the motor and a pair of rods arranged parallel to each other and extending toward the rigid member of the support, one of the rods being connected to the control rod and the other rod being connected to the valve body respectively. Each rod is coupled through a pin with a tube supported rotatably by a bracket. Gears are fixed to the respective tubes to mesh with the gears.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.