Global Patent Index - EP 1159562 A1

EP 1159562 A1 2001-12-05 - THERMALLY-INSULATING SLEEVE

Title (en)

THERMALLY-INSULATING SLEEVE

Title (de)

WÄRMEISOLIERENDE HÜLSE

Title (fr)

MANCHON THERMO-ISOLANT

Publication

EP 1159562 A1 (EN)

Application

EP 00902750 A

Priority

  • GB 0000409 W
  • GB 9905749 A

Abstract (en)

[origin: GB2347985A] A thermally insulating sleeve 10 for pipe(s) or cable(s) 22 comprises a generally tubular wall portion 12 formed from heat resistant material, and a heat-activatable layer 16 on the interior surface 18 of the wall portion 12. When the heat-activatable layer 16 is subjected to heat, it increases in thickness to improve the thermal insulation of the sleeve 10. Only that part of the heat-activatable layer 16 that is nearest to the heat source increases in thickness, which serves to move the pipe(s) or cable(s) 22 away from the heat source, and closer to the surface located furthest from the heat source for dissipation of the heat through the sleeve at this surface location. The heat-activatable layer 16 may comprise a material that expands on exposure to heat (as shown), the layer 16 preferably also contracting again on cooling. Alternatively, the heat-activatable layer 16 may comprise a compressed thermally insulating material with means to retain this material in its compressed state, the retaining means acting to release the thermally insulating material on being subjected to heat. In this case (shown in figures 3 and 4), the heat-activatable layer 36 most preferably comprises a plurality of plastic monofilaments 37 retained in a compressed state by a wax 40 that melts on exposure to heat and releases the monofilaments 37 to extend normal to the interior surface 38 of the wall portion 32.

IPC 1-7 (main, further and additional classification)

F16L 59/02

IPC 8 full level (invention and additional information)

F16L 59/02 (2006.01)

CPC (invention and additional information)

F16L 59/021 (2013.01)

Citation (search report)

See references of WO 0055540A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

GB 2347985 A 20000920; GB 2347985 B 20021211; GB 9905749 D0 19990505; AU 2449200 A 20001004; EP 1159562 A1 20011205; WO 0055540 A1 20000921

INPADOC legal status


2004-06-30 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20031225

2003-10-01 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030814

2001-12-05 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010911

2001-12-05 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-12-05 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI