Invention Grant
US3744720A Sprinkler head with improved brake and bearing assembly 失效
具有改进的制动器和轴承组件的喷泉头

Sprinkler head with improved brake and bearing assembly
Abstract:
A step-by-step rotary sprinkler head in which the brake mechanism for controlling the arcuate magnitude of the step-bystep movements is manually adjustable by turning a single threaded element to vary the pressure of frictional engagement of a pair of opposed arcuately segmental brake shoes with a ring shaped brake element.
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