BOOT SEAL
An elastomeric seal apparatus (16) having an inner annular terminating portion (36) which is attachable to a first (12) member, an outer annular terminating portion (38) which is attachable to a second (14) member, and an annular convoluted flexible portion (40) which is disposed between the inner (...
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| Zusammenfassung: | An elastomeric seal apparatus (16) having an inner annular terminating portion (36) which is attachable to a first (12) member, an outer annular terminating portion (38) which is attachable to a second (14) member, and an annular convoluted flexible portion (40) which is disposed between the inner (36) and outer (38) terminating portions and has an inner (46) and an outer (48) margin which are respectively joined thereto. The thickness of the convoluted flexible portion (40) decreases from the relatively thicker inner margin (46) to the relatively thinner outer margin (48) in proportion to a radial distance (H) extending from the inner margin (46) to the flexible portion (40). A concentrically inner convolution (42) and a concentrically outer convolution (44) constitute the flexible portion (40) and have a relatively small (R1?) and a relatively large (R2?) radius of curvature. When the inner (36) and outer (38) terminating portions are relatively reciprocated with the first (12) and second (14) members about a longitudinal seal axis (16a), the tapered, convoluted structure of seal apparatus (16) exhibits extended life as a result of substantially equalizing the maximum uniform strains induced therein.
Appareil d'etancheite (16) en materiau elastomere qui comprend une partie interne annulaire terminale (36) qui peut etre attachee a un premier organe (12), une partie (38) annulaire terminale qui peut etre attachee a un second organe (14), et une partie annulaire flexible (40) pourvue de spires qui est disposee entre les parties internes (36) et externes (38) terminales et presente un bord interne (46) et un bord externe (48) qui sont respectivement lies a ces parties. L'epaisseur de la partie flexible en spirale (40) decroit depuis le bord interne (46) relativement epais vers le bord externe (48) relativement fin proportionnellement a une distance radiale (H) depuis le bord interne (46) vers la partie flexible (40). Une spire interne (42) et une spire externe (44) concentriques constituent la partie flexible (40) et presentent respectivement un rayon de courbure relativement petit R1 et relativement grand R2. Lorsque les parties terminales internes (36) et externes (38) sont animees mouvement de va-et-vient par rapport au premier organe (12) et au second organe (14) le long d'un axe longitudinal (16a), la structure conique, et spiralee de l'appareil d'etancheite (16) presente une duree de vie prolongee en raison de l'egalisation des deformations maximum qui |
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