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1. (WO1981000293) BOOT-TYPE FACE SEALS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/000293    International Application No.:    PCT/US1979/000505
Publication Date: 05.02.1981 International Filing Date: 16.07.1979
B62D 55/088 (2006.01), F16J 15/34 (2006.01), F16J 15/36 (2006.01)
Priority Data:
US79/00505 16.07.1979 WO
Abstract: front page image
(EN)A sealing structure (10, 110) for use in a joint (11) having a first member (12) axially movable relative to a second member (14). The first member defines a recess (13) receiving the sealing structure which includes an annular seal ring (19, 119) having a radially outer annular base portion (20, 120) fitted in the recess, a sealing portion (21, 121) having a lip (22, 122) engaging a surface (15) of the movable member (14) confronting the recess (13). The sealing portion is provided with a stiffener which is bonded or partially encapsulated therein and provided with axially inwardly projecting tongues (30, 130) engaged by a spring structure (24, 124). In the illustrated embodiment, the spring structure includes one or more Belleville springs (25, 26, 125) received within the base portion (20, 120) of the seal ring and having outer portions (27, 127) axially inwardly engaging a flange (32, 132) inturned by the axially inner portion of the base. The Belleville springs are arranged to deflect past the flat disposition thereof in the range of movement between the joint members so as to provide an effectively minimum variation in the sealing force applied thereby.
(FR)Structure d"etancheite (10, 110) utilisee dans un joint (11) ayant un premier element (12) mobile axialement par rapport a un second element (14). Le premier element definit un evidement (13) recevant la structure d"etancheite qui comprend une bague d"etancheite annulaire (19, 119) ayant une portion de base annulaire radialement externe (20, 120) logee dans l"evidement, une partie d"etancheite (21, 121) ayant une levre (22, 122) s"appuyant sur une surface (15) de l"element mobile (14) se trouvant face a l"evidement (13). La portion d"etancheite est pourvue d"un raidisseur qui est lie ou partiellement encapsule a l"interieur et pourvu de langues se projetant axialement vers l"interieur (30, 130) engagees par une structure a ressort (24, 124). Dans le mode de realisation illustre, la structure a ressort comprend une ou plusieurs rondelles B Belleville (25, 26, 125) recues dans la portion de base (20, 120) de la bague d"etancheite et ayant des portions externes (27, 127) cooperant axialement vers l"interieur avec une bride (32, 132) tournee en dedans par la portion axialement interne de la base. Les rondelles Belleville sont concues pour se deflechir au-dela de leur disposition plate dans la plage de mouvement entre les elements de joint de maniere a obtenir une variation minimum de la force d"etancheite appliquee.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)