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
Pear tree named `PremP109`
Transmitting apparatus and retransmitting method
Architectural panel with bamboo rings heavy density embossed surface
Liquid crystal display
Anti-proliferative and anti-inflammatory agent combination for treatment of vascular disorders with an implantable medical device
Wireless device and communication control method
LED light source lamp having drive circuit arranged in outer periphery of LED light source
  Randomly Featured Patents
Method for pretreating glass cords which minimizes cord blows
Methyl methacrylate syrup and production thereof
Container with improved collapsible pouring spout
Matt biaxially stretched polypropylene film and a process for producing the same
Performance enhanced gas turbine powerplants
1-[(3-Indolyl)-alkyl]-piperidyl ureas and hypotensive compositions
Internal fishline type fishing rod having fishline guider
Multilevel vulcanizing press
Metal wiring
Pet commode assembly having retractable shelves responsive to weight of human on toilet seat