| 摘要 |
A retractable adjustable-trajectory rooftop fire sprinkler comprising a base component, a lockable flow-through hinge fitting, a trajectory angle setting means, and a sprinkler head. Trajectory angle setting means is a means to adjust, lock, and hold a certain trajectory angle of water flowing from the sprinkler head by allowing the rotation of the lockable flow-through hinge fitting about an axis-of-rotation relative to the base component. Base component and lockable flow-through hinge fitting each further comprise at least one knuckle protrusion with a hinge screw hole located therein. All hinge screw holes are aligned and a hinge pin or a hinge screw is inserted through each hinge screw hole to pivotally attach lockable flow-through hinge fitting to base component. Trajectory angle setting means includes a lockable hinge mechanism, a spring pin and plurality of spring pin holes, and a ratchet mechanism. |
| 主权项 |
1. A retractable adjustable-trajectory rooftop fire sprinkler comprising: a base component; a lockable flow-through hinge fitting; a trajectory angle setting means; and a sprinkler head, wherein,
said base component comprises a rigid flat solid planar member with an upper surface, a lower surface, one or more outer edges, an overall outer dimension, and at least one base component knuckle protrusion, said at least one base component knuckle protrusion comprises a rigid oblong planar member extending vertically upwards from said upper surface of said base component with a cylindrical-shaped void or hole there through that is a hinge screw hole, said lockable flow-through hinge fitting comprises a fitting body, a threaded area for feed hose, a threaded area for sprinkler head, and at least one hinge fitting knuckle protrusion, said fitting body comprises a rigid, solid, hollow cylindrical member with a closed end, an open end, an interior surface, an exterior surface, and a longitudinal axis, said open end of fitting has threads inscribed either along said interior surface or said exterior surface of said fitting body which is said threaded area for feed hose, said threaded area for sprinkler head comprises a raised cylindrical-shaped protrusion protruding from said exterior surface of said fitting body with a longitudinal axis perpendicular to that of said fitting body, said raised cylindrical-shaped protrusion has two open ends, an interior surface, and an exterior surface, said raised cylindrical-shaped protrusion has threads inscribed either along said interior surface or said exterior surface of said raised cylindrical-shaped protrusion, said at least one hinge fitting knuckle protrusion comprises a rigid oblong planar member extending radially outward from said exterior surface of said fitting body with a longitudinal axis that is perpendicular to that of fitting body and a cylindrical-shaped void or hole there through that is a hinge screw hole, said hinge screw hole in said at least one base component knuckle protrusion and said hinge screw hole in said at least one hinge fitting knuckle protrusion are the same size, said lockable flow-through hinge fitting is pivotally attached to said base component by aligning said hinge screw hole in said at least one base component knuckle protrusion with said hinge screw hole in said at least one hinge fitting knuckle protrusion and placing a hinge pin through both said hinge screw holes, wherein said hinge pin is a rigid, solid, cylindrical-shaped member with outer diameter sized to form a slip fit or clearance fit within said hinge screw hole in said at least one base component knuckle protrusion and said hinge screw hole in said at least one hinge fitting knuckle protrusion, said trajectory angle setting means is a means to adjust the trajectory angle of water flowing from said sprinkler head by allowing the rotation of said sprinkler head relative to said base component along at least one axis of movement thereby allowing the adjustment of the trajectory angle of water flowing from said sprinkler head and the locking or holding of a certain trajectory angle of water flowing from said sprinkler head, said sprinkler head is a hollow vessel capable of containing the pressurized flow of liquid there through and has one or more holes in one end through which water may flow there through and a male or female threaded connector at the other end through which water may flow there through, and said sprinkler head is removeably attached to said lockable flow-through hinge fitting by threaded connection at said threaded area for sprinkler head. |
