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US 4,773,594 AGranted
Controlled pattern wobbling sprinkler
OwnerJack F. Clearmaninventor
Life of this patent
Estimating the term…
Abstract
A wobbling water distributor head mounted at the end of an angularly disposed tubular water-transporting arm. The base of the distributor head is mounted loosely between spaced shoulders. The wobbling motion of the head causes the distributor arm to traverse a circular path. The area sprinkled is controlled by varying the distance between the shoulders as the distributor arm rotates.
Claims8
In a sprinkling device of the type comprising a wobbling water distributor head that has a base with a hole extending therethrough, said base being loosely mounted on the distal portion of a tubular water-transporting support arm between two spaced shoulders,
- the improvement comprising one shoulder's being mounted on a loose-fitting sleeve that surrounds the support arm, and means located on said arm for moving the sleeve and the shoulder mounted thereon toward or away from the other shoulder and thereby continually and controllably varying the distance between said shoulders while said device is carrying out its sprinkling function,
- whereby the dimensions of the area watered by said device are also controllably varied.
Dependencies are inferred from the claim text.