Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Sprinkler with geared viscous hesitator and related method










Image Number 6 for United States Patent #7980488.

A rotary sprinkler includes: a shaft having a cam, the cam having a plurality of radially outwardly projecting cam lobes; a rotatable water distribution plate adapted to be impinged upon by a stream emitted from a nozzle causing at least the water distribution plate to rotate; a hesitator assembly including a stationary housing having a sealed chamber at least partially filled with a viscous fluid, with at least the cam and the cam lobes located within the chamber; a rotor ring located within the chamber in substantially surrounding relationship to the cam, the rotor ring loosely located within the chamber for rotation and translation, the rotor ring provided with at least two hesitator lobes projecting radially inwardly and movable laterally into and out of a path of rotation of the cam lobes, and a first plurality of radially outwardly projecting teeth selectively engageable with a second greater plurality of teeth provided on an inner wall of the housing; and wherein rotation of water distribution plate is slowed during intervals when one of the cam lobes engages and pushes past a respective one of the hesitator lobes, the cam lobe exerting both rotation and translation forces on the rotor ring, with one of the first plurality of teeth on the rotor engaging one of the second plurality of teeth on the housing wall.








 
 
  Recently Added Patents
Spray drying vancomycin
Method of measuring a displacement amount for an automobile suspension assembly
Method for etched cavity devices
Position pointer, variable capacitor and inputting apparatus
Light emitting device power supply circuit, and light emitting device driver circuit and control method thereof
Leg mounted portable computer
Stage drive method and stage unit, exposure apparatus, and device manufacturing method
  Randomly Featured Patents
Guidance display device
Thrust bolting: roof bolt support apparatus
Seating device
Integrated injection logic devices including injection regions and tub or sink regions
Device including memory array and method thereof
Telephone base
Extending test sequences to accepting states
Camera case
Process for producing coatings using surface-active photoinitiators
Multi-level controller system and method