B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
152/71.21, 152/7
B60C 17/00 (2006.01) B60C 17/04 (2006.01)
Patent
CA 1136530
USSN 33,679 Filed April 26, 1979 RUN-FLAT VEHICLE TIRE Abstract of the Disclosure An insert to provide a run-flat capability to pneumatic vehicle tires comprises a flexible, compressible, porous ring comprised of a plurality of successively-wound, circumferential layers of an elastomeric binder-coated filamentary material, the coated filaments having voids there- between and being bonded to one another by the binder. The insert has desirable properties including lightweight, flexibility, and good load- distributing properties which make it a practical and useful component of any run-flat insert design for pneumatic tires. In preferred embodiments, the insert is spaced and supported from the tire by a member which minimizes the overall weight added to the tire. It is also further desirable to provide the insert with means to reduce its expansion radially upon rotation of the tire. -1-
344490
Smart & Biggar
W.r. Grace & Co.,-Conn.
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