초록 ▼

A sealing member for relatively movable, e.g., rotating or reciprocating, members comprises a pair of annular rings each with a radially extending wall and an axially extending wall defining an annular seal gland. An elastic spring member compression-loaded in the seal biases the exterior surfaces a

A sealing member for relatively movable, e.g., rotating or reciprocating, members comprises a pair of annular rings each with a radially extending wall and an axially extending wall defining an annular seal gland. An elastic spring member compression-loaded in the seal biases the exterior surfaces against the bearing surfaces. The ring members are preferably of TEFLON, or like polytetrafluoroethylene plastic, RYTON, polyphenylene sulfide, or a soft elastic metal capable of being compressed by the spring member against the walls of the surface being sealed. The spring is a rubber or elastomeric O-ring or the like. Other spring members, such as a Belleville spring assembly or the like, may be used. This seal is characterized by its operation at elevated temperatures, i.e., up, to 1000°F.

대표청구항 ▼

A sealing assembly for a plurality of surfaces defining an annular space having a longitudinal axis, for sealing relatively movable members at temperatures up to about 1000°F., comprising first and second annular shaped members of a hard, but elastically deformable material, each annular shaped memb

A sealing assembly for a plurality of surfaces defining an annular space having a longitudinal axis, for sealing relatively movable members at temperatures up to about 1000°F., comprising first and second annular shaped members of a hard, but elastically deformable material, each annular shaped member being generally of an L-shape configuration and substantially of identical shape and being assembled to be in opposed mirror relation so that substantially identical surfaces of the annular shaped members face in opposite directions, one annular shaped member having a first outer radially facing annular surface for being in substantially surface-to-surface contact with one of the relatively movable members and the other annular shaped member having a first inner radially facing annular surface for being in substantially surface-to-surface contact with the other relatively movable member, said one annular member having a second inner radially facing annular surface for being in substantially surface-to-surface contact with said other relatively movable member, said other annular shaped member having a second outer radially facing annular surface for being in substantially surface-to-surface contact with said one relatively movable member, said first outer radially facing annular surface and said first inner radially facing surface being substantially identical, said second inner facing radially annular surface and said second outer facing annular surface being substantially identical, said radially facing annular surfaces of each respective annular shaped member being joined by an axially facing annular surface for engaging in substantially surface-to-surface contacting relationship an adjacent surface to which each respective annular shaped member is axially positioned, said axially facing annular surfaces facing in opposite directions away from each other, said annular members having surfaces facing inwardly toward each other in being assembled and shaped to form an annular cavity and a small spacing between adjacent opposed edges of said annular members defining radially and axially offset gaps therebetween, and annular elastic spring means positioned in said annular cavity between and substantially surrounded on all sides thereof by said annular members except at said offset gaps and spaced from all surfaces of said annular space and said relatively movable members biasing said annular members apart in directions both radially and axially of said longitudinally axis when installed with said annular members under compression toward each other.