초록 ▼

A two-part dual lip, reversible seal for gear cases and the like wherein a peripheral seal is to be established about a shaft which passes into the housing. Each part of the seal is of semi-circular configuration consisting of a metal retainer and an elastomeric sealing portion which is formed as an

A two-part dual lip, reversible seal for gear cases and the like wherein a peripheral seal is to be established about a shaft which passes into the housing. Each part of the seal is of semi-circular configuration consisting of a metal retainer and an elastomeric sealing portion which is formed as an integral unit and which is positioned and retained in appropriate channels in the gear case. The elastomeric seal comprises dual sealing lips having a recess therebetween for charging with lubricant prior to assembly of the housing over the gears and shaft. Projection of the seal element at either end of its circumferential extent allows for controlled compression of the elastomeric material in engagement with the mating part of the seal and a continuous seal about the periphery of the shaft.

대표청구항 ▼

A two-piece sealing member for mounting in a split circular channel surrounding a rotatable shaft, each sealing member piece comprising a metal retainer in a generally half-ring configuration, and an elastomeric seal bonded to said retainer over the full inner periphery thereof, said seal comprising

A two-piece sealing member for mounting in a split circular channel surrounding a rotatable shaft, each sealing member piece comprising a metal retainer in a generally half-ring configuration, and an elastomeric seal bonded to said retainer over the full inner periphery thereof, said seal comprising a body portion having a cross-sectional configuration conforming to the shape of said support channel and adapted for a snug fit therein so as to be constrained against radially outward movement and restrained against circumferential movement relative thereto by said support channel, and a pair of divergent legs disposed radially inwardly of said body portion, said legs having sealing edges at the radially inner ends thereof adapted for engagement with said rotatable shaft, said legs being adapted for deflection axially with respect to said body portion to place a light seating bias on said sealing edges when said split circular channel is moved to a mounting location surrounding said shaft, said legs having projecting portions at either end extending circumferentially greater than 180 degrees so as to engage corresponding projecting portions of said other sealing member piece, whereby said projecting portions may be circumferentially compressed by the constraint of said channel to establish a fluid tight seal about the periphery of said rotatable shaft, said pair of divergent legs being symmetrical with respect to said body portion so that said sealing member is reversible in said channel.