| 摘要 |
457,579. Laminated springs ; adhesion compositions. NAAMLOOZE VENNOOTSCHAP IRMA INDUSTRIE EN RUWMATERIALEN MAATSCHAPPIJ, 55, Haringvliet, Rotterdam, Holland. March 16, 1936, No. 7843. Convention date, June 19, 1935. [Class 108 (iii)] [See also Group XXIV] In order to retard the motion of a laminated spring, material having relatively high frictional properties is added to strips of material interposed between the laminations. Such strips may comprise a metallic core, e.g. a perforated metal sheet, a sieve, or braid into and around which is pressed or rolled a mass composed of fibrous material, e.g. asbestos, bending and hardening agents, e.g. artificial resins, and a friction agent, e.g. metal dust, glass-powder, silicium carbide, quartz-sand, or colophony. There may be 60 per cent asbestos, 20 per cent bending agent, 15 per cent hardening agent, and 5 per cent friction agent. |
