Swinging lawn sprinkler

• US 20050194465A1
• Filed: 05/24/2004
• Published: 09/08/2005
• Est. Priority Date: 03/08/2004
• Status: Active Grant

• Current Assignee: Aquastar Industries, Inc.
• Original Assignee: Aquastar Industries, Inc.
• Inventors: Wang, Gary
• Granted Patent: US 7,086,609 B2
• Time in Patent Office: Days
• US Class Current: 239/263
• CPC Class Codes: B05B 3/0436 by reversing the direction of rotation of the rotor itself

Abstract

A swinging lawn sprinkler includes a sprinkling control unit with a gear-operated transmission mechanism adapted therein attached to one side of a sprinkler mount thereof. A limiting connector having a water outlet connector engaged at one side is correspondingly matched to the gear-operated transmission mechanism and a spraying member. A main driving wheel, an adjusting seat, and a water inlet connector are sequentially coupled at the other end of the gear-operated transmission mechanism thereof. The adjusting seat thereof is equipped with a limiting cavity for a power switching device made up of a plurality of power units in linkage with a pivoting shaft and a pair of limiting zones with elastic pieces and pressure guide members adapted therein to be pivotally mounted therein to activate the shift of angles of a flow switch plate thereby. Thus, when the power switching device is rotated, the power units will produce arc-shaped stress concentration in advance and store energy thereby till an auxiliary force is instantaneously formed to overpower the elastic pieces and send the pressure guide members thereof quickly over to the other side of triangular locating guide blocks of the adjusting seat thereof, efficiently shortening the moving course of the pressure guide members and the elastic pieces thereof, and facilitating the swing of the spraying member within a short period of time so as to increase the frequency of the variation of water flow for more thorough and equal sprinkling of water around the lawn in a short time.

Claims

1. A swinging lawn sprinkler, including a sprinkling control unit made up of a gear-operated transmission mechanism, a limiting connector, a water inlet connector, a water outlet connector, a main driving wheel, and an adjusting seat:

the present invention being characterized by that,

a power switching device is mounted to a limiting cavity of the adjusting seat to activate the shift of angles of a flow switch plate thereby, and is equipped with a plurality of power units extending concentrically inwards at the inner side in linkage with a pivoting shaft thereof, and a pair of limiting zones symmetrically protruding at the corresponding inner side therein each for an elastic piece and a pressure guide member to be adapted therein wherein one end of the pressure guide member supported by the elastic piece is extended outwards at the limiting zone thereof to abut against one corresponding side of a triangular locating guide block of the adjusting seat thereof;

thus, when is the power switching device is rotated, the power units will produce arc-shaped stress concentration in advance and store energy thereby till an auxiliary force is instantaneously formed to overpower the elastic pieces thereof and send the pressure guide members thereof quickly over to the other side of the locating guide block thereof, efficiently shortening the moving course of the pressure guide members and the elastic pieces thereof, and facilitating the swing of a spraying member within a short period of time so as to increase the frequency of the variation of water flow for more thorough and equal sprinkling of water around the lawn in a short time.

2. The swinging lawn sprinkler as claimed in claim 1 wherein the power switching device is formed of an annular frame body.

3. The swinging lawn sprinkler as claimed in claim 1 wherein each limiting zone of the power switching device thereof has a pair of stop blocks symmetrically protruding at the upper inner walls thereon to define a smaller guiding space there-between for one end of the pressure guide member to be led there-through.

4. The swinging lawn sprinkler as claimed in claim 1 wherein the limiting zone of the power switching device thereof has a locating protrusion disposed at the bottom side wall opposite to the guiding space thereof for the elastic piece to be mounted thereto at one end thereof.

5. The swinging lawn sprinkler as claimed in claim 1 wherein the pressure guide member is provided with a stop ring disposed at the middle section thereof, resiliently supported by the elastic piece to abut against the stop blocks of the limiting zone of the power switching device thereby.