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










Image Number 4 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
Systems and methods of device-free motion detection and presence detection
Volume compensation within a photovoltaic device
Estimating optical characteristics of a camera component using sharpness sweep data
Method for making an abrasion-resistant steel plate and plate obtained
Simulation tool for air traffic communications security
Scalable packet processing systems and methods
Food-grade flour from dry fractionated corn germ and collet composition and method for producing same
  Randomly Featured Patents
Dispensing device for two fluid materials
Process for the production of crystalline alcohol free alkali metal alcoholates in an inert solvent
Antivirus intelligent flow framework
Conductive resin composition and conductive sheets comprising the same
Method and apparatus for signal detection, separation and suppression
Plug-in part for a plug connector arrangement
Anti-lock brake control method for vehicle
Aromatic compound and organic electroluminescent element containing the same
Method for sensing a threat
Process for production of unsymmetrical dimethylhydrazine by nitrosation of dimethylamine and hydrogenation of the nitroso dimethylamine to the distillation of unsymmetrical dimethylhydrazine