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
Stereoscopic display
Systems and methods for advertising on content-screened web pages
Method and apparatus for increasing query traffic to a web site
Optimization of packaging sizes
Compact multi-functional scanning apparatus with retractable flatbed scanner
Reading apparatus and reading method
Automated incorporation of expert feedback into a monitoring system
  Randomly Featured Patents
Method for designing LSI circuit pattern
Method for dynamic load balancing on partitioned systems
Polymer compounds and their use for the vulcanisation of halogen-containing rubbers
Methods of clock signal generation with selected phase delay
System for controlling adjustable pedals
Square bread tube
Vacuum cleaner
Compression encoding apparatus, encoding method, decoding apparatus, and decoding method
Process for producing three-dimensional structure
Method of fusing trimming for semiconductor device