Stem Coupling
AssigneeKennedy Valve Company
InventorPaul Kennedy
Life of this patent
Estimating the term…
Abstract
A fire hydrant stem coupling sleeve includes a first end, a second end, and a medial section between the first end and the second end. The first end has external threads; the second end has external threads; the first end and the second end each have fingers defining slots between the fingers; the medial section includes a breaking element to facilitate breaking a rigid connection between the first end and the second end; and the medial section has a locator element configured to locate the sleeve with respect to a fire hydrant stem.
Claims22
A fire hydrant stem coupling assembly comprising:
- a coupling sleeve having a sleeve wall with a first end, a second end, and a medial section between the first end and the second end, the first end having external threads, the second end having external threads, the first end and the second end each having fingers defining slots between the fingers, the medial section including a breaking element to facilitate breaking the rigid connection between the first end and the second end, the sleeve wall defining a first pin hole extending through a diameter of the sleeve wall;
- a first coupling nut having internal threads configured to threadingly engage the first end;
- and
- a second coupling nut having internal threads configured to threadingly engage the second end.
A fire hydrant stem coupling sleeve comprising:
- a first end:
- a second end;
- and
- a medial section between the first end and the second end,
- the first end having external threads, the second end having external threads, the first end and the second end each having fingers defining slots between the fingers, the medial section including a breaking element to facilitate breaking a rigid connection between the first end and the second end, the medial section having a locator element configured to locate the sleeve with respect to a fire hydrant stem.
A fire hydrant comprising:
- an upper stem;
- a lower stem;
- a coupling sleeve coupling the upper stem to the lower stem, the coupling sleeve including:
- a sleeve wall with a first end, a second end, and a medial section between the first end and the second end, the first end having external threads, the second end having external threads, the first end and the second end each having fingers defining slots between the fingers, the medial section including a breaking element to facilitate breaking the rigid connection between the first end and the second end, the sleeve wall defining a locator element;
- and
- a first coupling nut having internal threads configured to threadingly engage the sleeve wall.
Dependencies are inferred from the claim text.