Method of making composite spring and damper units
US6004492A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1998 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | Jan 14, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63B2231/52
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A composite spring-damper and method of making same. The spring-damper has an exposed fabric layer free of structural foam and curable resin. A core formed of resilient foam defines a spring shape and a fabric layer disposed on an outer surface of the core is attached to foam core by means of the foam having substantially filled only interstices of an inner portion of the fabric layer, without substantially penetrating an outer portion of said fabric layer; whereby the fabric layer of the composite spring-damper may thereafter be substantially completely saturated with a curable material for lamination to another structure. An attached reinforcing fabric layer may be provided on the exterior surface of the fabric layer, in which case the fabric layer may be entirely saturated and only the attached fabric layer substantially free of foam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.