Patent ID: 9404584
Filing Date: 2016-08-02
CPC Classification: F16J

Claim Text:
1. Compact restrictive seal for bearing housings, comprising a closed circular shaped sleeve ( 10 ′) with a predominantly “J” shaped sectional profile that fits a shaft; a closed circular shaped external deflector ( 20 ′) with a predominantly “L” shaped sectional profile; an open circular shaped restrictive lock ring ( 30 ) with a predominantly polygonal shaped sectional profile; a closed circular shaped housing ( 40 ′); an open circular shaped expanding lock ring ( 50 ) with a predominantly polygonal shaped sectional profile; a closed circular shaped centering ring ( 60 ′) that is fixed in the central area of the smallest diameter of housing ( 40 ′), and is additionally characterized in that the sleeve ( 10 ′) exhibits the third smaller portion ( 11 ), parallel to the shaft ( 100 ), which serves as part of an inner labyrinth, with a finish in the shape of a small tooth ( 11 ′); this small tooth ( 11 ′) is to be aligned and oriented towards the expanding lock ring ( 50 ); the aforementioned tooth ( 11 ′) also forms a channel ( 12 ) right from the end of the smaller portion ( 11 ); the external deflector ( 20 ′) is to be equipped with a more extensive tooth ( 22 ′), in order to go deeper into the housing body ( 40 ′); the aforementioned tooth ( 22 ′) in turn, is to be provided with a finish on its end, such that its outer face resembles a channel with its trough ( 22 ″) oriented towards the same operating direction as the centrifugal force; the body of the outer deflector ( 20 ′) is to be opposite the internal channel ( 23 ), which houses the sealing “O” ring (c), a secondary channel ( 25 ); the closed circular shaped housing ( 40 ′) has a predominantly “U” shaped sectional profile; the end ( 41 c ) of upper portion ( 41 a ) of housing ( 40 ′), which is completely under the projection of the bearing housing wall, has the shape of a “V” tooth; said “V” tooth shaped end ( 4 k ) in combination with the expanding lock ring ( 50 ) and the channel ( 12 ) form a holding chamber ( 70 ); the vertical portion of the housing ( 40 ′) is to be given a shape that mirrors the inner face of the outer deflector ( 20 ′) and the main channel ( 45 ′) is to be deeper to accommodate the tooth ( 22 ′); the lower portion ( 48 ) of housing ( 40 ′) is to reveal an appendage ( 49 ) downstream of the notched cavity ( 47 ), which houses the centering ring ( 60 ′); the aforementioned appendage ( 49 ) is to be in the shape of a channel; the centering ring ( 60 ′) is to be in the shape of an “I” lying down and with contact area with the sleeve ( 10 ′), now exhibiting three thin contact areas, ( 61 ), ( 62 ) and ( 63 ′), wherein a wedge shape forms two of the three thin contact areas and a lip forms a third of the three thin contact areas.