Protective cover device for a fire protection instrument
AssigneeTyco Fire Products LP
InventorScott T. Macomber
Life of this patent
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Abstract
A protection device for a fire protection sprinkler having a first housing portion extending along a first housing axis defining a first internal housing chamber for receipt of one portion of a trigger assembly. A second housing portion of the protection device extends along a second housing axis and defines a second internal housing chamber for circumscribing a another portion of the trigger assembly. The first housing chamber is in communication with the second housing chamber.
Claims26
A protection device for a fire protection sprinkler, the fire protection sprinkler having a frame body extending along a sprinkler axis and a deflector member spaced from an outlet with a trigger assembly disposed between the frame body and the deflector, the frame body and deflector member being centered and axially aligned along the sprinkler axis, the trigger assembly extending radially outside the frame body, the protection device comprising:
- a first housing portion extending along a first housing axis and defining a first internal housing chamber for receipt of a first portion of the trigger assembly such that the first housing axis extends perpendicular to the sprinkler axis, the first housing portion defines a first length in the direction of the first housing axis;
- and
- a second housing portion extending along a second housing axis and defining a second internal housing chamber for circumscribing a second portion of the trigger assembly such that the second housing axis extends parallel to the sprinkler axis, the first internal housing chamber in communication with the second internal housing chamber, the second housing portion defines a second length in the direction of the second housing axis, the first length being greater than the second length, a ratio of the first length to the second length ranges from 1.1:1 to 1.5:1, the sprinkler defines a total axial height, the first length being 50 to 75 percent of the total axial height,
- the first housing portion is cylindrical having an inner surface spaced from the first housing axis and defining a radius of curvature about the first housing axis, the inner surface extending along the first housing axis from a first surface end coupled with the second housing portion to a second surface end opposite the first surface end.
A fire protection sprinkler for shipment comprising:
- a sprinkler having a deflector and a body axially spaced from the deflector along a sprinkler axis, the sprinkler including a pair of frame arms disposed about the sprinkler axis, the sprinkler including a trigger assembly having a frangible portion aligned with the sprinkler axis and an actuator disposed between the frame arms and extending radially from the sprinkler axis;
- and
- a protective device wrapped about a sprinkler frame and including a first housing portion circumscribed about the actuator and a second housing portion housing the frangible portion, the first housing portion having a first radius of curvature about a first housing axis perpendicular to the sprinkler axis, the first housing portion defines a first length in the direction of the first housing axis,
- the second housing portion having a second radius of curvature about a second housing axis parallel to the sprinkler axis, the second radius of curvature being greater than the first radius of curvature, the second housing portion defines a second length in the direction of the second housing axis, the first length being greater than the second length, a ratio of the first length to the second length ranges from 1.1:1 to 1.5:1, the sprinkler defines a total axial height, the first length being 50 to 75 percent of the total axial height,
- the first housing portion being an elongate tubular member having an inner surface spaced from the first housing axis with its radius of curvature about the first housing axis perpendicular to the sprinkler axis to receive and house the actuator extending radially from the sprinkler axis, the inner surface extending along the first housing axis from a first surface end coupled with the second housing portion to a second surface end opposite the first surface end.
A method of protecting a fire protection sprinkler having a pair of frame arms disposed about a sprinkler axis and a trigger assembly including an actuator centered between the frame arms and extending radially from the sprinkler axis, the method comprising:
- disposing a first housing portion of a protective device to align a second housing portion of the protective device with the frame arms the second housing portion having a second housing axis parallel to the sprinkler axis;
- and
- wrapping the second housing portion about the frame in a snap-fit engagement, wherein the first housing portion includes an elongated cylindrical member having an inner surface spaced from a first housing axis of the first housing portion with a radius of curvature extending about the first housing axis extending perpendicular to the sprinkler axis and the disposing includes receiving the radially extending actuator within the first housing portion, the first housing portion defines a first length in the direction of the first housing axis, the second housing portion defines a second length in the direction of the second housing axis, the first length being greater than the second length, a ratio of the first length to the second length ranges from 1.1:1 to 1.5:1, the sprinkler defines a total axial height, the first length being 50 to 75 percent of the total axial height, the inner surface extending along the first housing axis from a first surface end coupled with the second housing portion to a second surface end opposite the first surface end.
Dependencies are inferred from the claim text.