Clamp ring assembly for air spring
US4899995A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1988 |
| Grant date | Feb 13, 1990 |
| Priority date | — |
| Expiry date | Dec 29, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/0454
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An air spring formed by an axially spaced end member and a piston member with an intervening elastomeric flexible sleeve therebetween which forms a fluid pressure chamber. An annular clamp ring having a recess on the inner diameter thereof coacts with a corresponding annular projection on the outer diameter of the rigid piston member to positionally locate the ring on the piston member. A pair of clamping surfaces are located on opposite sides of the projection and are separated therefrom by expansion grooves. The projection and clamping surfaces form a series of pinch areas with the intervening sleeve, which sealingly clamp the sleeve therebetween. The expansion grooves receive portions of the sleeve and change the direction of reinforcing cords within the sleeve. Another radially extending groove traps a partially compressed end of the sleeve therein and provides an additional material expansion area. The clamp ring seats upon a shoulder of the piston member to reduce movement of the ring during operation of the air spring. The positioning of the ring proximate to the edge of the piston member provides a substantially continuous surface on which the sleeve rolls during operation …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.