Sprinkler bearing assembly
AssigneeL. R. Nelson
InventorsLawrence P. Heren, Scott Jacobs
Life of this patent
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Abstract
A rotating bearing assembly for a sprinkler coupled to a pipe segment is disclosed. The bearing assembly has a stem which permits fluid flow. The stem has a bottom open end with a collar and a top open end which is connected to a cap. The cap allows connection to a sprinkler head which rotates from water pressure through the pipe segment. The stem conduit rotates in relation to a sleeve which is frictionally fitted within the pipe segment. A plurality of washers is located between the collar and the bottom of the sleeve to provide a water seal under high pressure conditions. Another group of washers is located between the top of the sleeve and the cap to provide additional sealing under low pressure conditions.
Claims19
A bearing assembly for rotatably supporting a fluidly connected outlet member from a pipe segment, the bearing assembly comprising:
- a hollow, generally cylindrical stem extending along a longitudinal axis and defining a fluid conduit chamber therein, the stem having an inlet end with an annular collar and an outlet end;
- a cap connected to the outlet end, the cap having an fluid inlet and an outlet with a connector connectable to the outlet member;
- and
- a cylindrical sleeve having an open top end and a bottom end annularly located around the fluid conduit, the sleeve having a uniform outer diameter in fictional contact with the interior of the pipe segment, wherein the cap and the stem rotate relative to the sleeve, and wherein the annular collar has an outer diameter which is less than the outer diameter of the sleeve.
A Searing assembly for rotatably coupling a Sprinkler head to a pipe segment the bearing assembly comprising:
- a hollow, generally cylindrical stem extending along a longitudinal axis and defining a fluid conduit chamber therein, the stem having an inlet end with an annular collar and an outlet end;
- a cap connected to the outlet end, the cap having an fluid inlet and an outlet with a connector connectable to the sprinkler head;
- a cylindrical sleeve having an open top end and a bottom end annularly located around the fluid conduit, the sleeve having a uniform outer diameter in frictional contact with the interior of the pipe segment, wherein the cap and the stem rotate relative to the sleeve, and wherein the annular collar of the stem has an outer diameter that is less than that of the cylindrical sleeve;
- a low pressure sealing washer seated around the stem between the top of the sleeve and the cap;
- and
- a high pressure sealing washer seated around the stem between the bottom of the sleeve and the collar of the stem.
Dependencies are inferred from the claim text.