Document Type and Number:
Japanese Patent JPS61204664
Kind Code:
U
Abstract:
A sprinkler for irrigating large areas comprises a stationary bearing member (1) for the spray pipe (12) and also comprises a separate braking device (3). The braking device (3) comprises radial extensions (13), which are non-rotatably connected to the spray pipe (12). The desired braking is effected in that a free rotation of said radial extensions (13) is prevented by a high-viscosity fluid in the braking device (3). The radial extensions (13) which are non-rotatably connected to the spray pipe (12) may interdigitate with radial extensions (10) which are non-rotatably connected to the stationary housing (2) of the braking device (3). As a result, the high-viscosity fluid will be subjected to shear stress between adjacent radial extensions (10, 13), which are non-rotatably connected in alternation to the spray pipe (12) and the housing (2). To improve the braking action, interdigitating axial extensions may be connected to the radial extensions.
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Application Number:
JP8120486U
Publication Date:
December 23, 1986
Filing Date:
May 30, 1986
Export Citation:
International Classes:
B05B3/06; B05B3/10; F16D57/00; F16F9/12; B05B3/00; (IPC1-7): B05B3/06