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Machine translation
1. (WO1981000078) COMPOSITE POLYETRAFULOROETHYLENE AND ELASTOMER LIP SEAL AND METHOD OF MAKING SAME
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/000078    International Application No.:    PCT/US1980/000372
Publication Date: 22.01.1981 International Filing Date: 07.04.1980
IPC:
B29D 99/00 (2010.01), B32B 25/00 (2006.01), F16J 15/32 (2006.01)
Applicants:
Inventors:
Priority Data:
54181 02.07.1979 US
Title (EN) COMPOSITE POLYETRAFULOROETHYLENE AND ELASTOMER LIP SEAL AND METHOD OF MAKING SAME
(FR) JOINT A LEVRE COMPOSITE DE POLYTETRAFLUOROETHYLENE ET D"ELASTOMERE ET SON PROCEDE DE FABRICATION
Abstract: front page image
(EN)A lip seal comprising a wafer (100) formed of concentric sections of polytetrafluoroethylene (126) and an elastomer (146) with the elastomer section (146) attached to a rigid annular member (110) of plastic or metal for mounting the seal. The polytetrafluoroethylene section (126) forms an annular lip sealing portion on either the inner or outer circumference of the seal which said lip sealing portion may be slitted, grooved or formed to improve its flexibility and sealing action. The seal is formed from a polytetrafluoroethylene tube (20) or rod (22) which is etched before having the elastomer bonded thereto in a mold. The resulting composite tube or rod is then slitted into wafers or washers which may further be provided with slits or grooves in the polytetra-fluoroethylene portion.
(FR)Un joint a levre consiste en une rondelle (100) formee de sections concentriques de polytetrafluorethylene (126) et d"un elastomere (146), la section en elastomere (146) etant fixee sur un organe annulaire rigide (110) en plastique ou metal de montage du joint. La section de polytetrafluorethylene (126) forme une portion annulaire de levre d"etancheite a la fois sur la circonference interieure et sur la circonference exterieure du joint, ladite partie en levre d"etancheite pouvant etre fendue, rainuree ou formee pour ameliorer sa flexibilite et son action d"etancheite. Le joint est forme a partir d"un tube (20) ou tige (22) de polytetrafluorethylene qui est attaque a l"acide avant de faire adherer l"elastomere sur le tube dans un moule. Le tube ou tige composite resultant est alors coupe en ronds ou rondelles sur lesquels on peut encore pratiquer des entailles ou rainures dans la portion de polytetrafluorethylene.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)