Impact sprinkler drive system

Details Impact sprinkler drive system Impact sprinkler drive system

2007-05-15

2007-05-15

Shaver, Kevin (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Distributor continuously moves relative to support during...

With impact motive means

C239S231000, C239S233000, C239SDIG010

Reexamination Certificate

active

11182434

ABSTRACT:
An impact sprinkler drive is provided by an impact arm or spoon that rotates out of and counter-rotates into a water stream to impact and forward re-align a water emission portion from which the water stream emits. The impact arm is designed to, upon sufficient rotation, interfere with the water stream to reduce back-impact and reverse re-alignment of the water stream. The impact arm may be an impact spoon formed on an impact disc. The impact spoon is configured to increase the energy for forward re-alignment of the water emission portion including an increased length to permit a time delay before water flowing through the spoon applies force away from the water stream. The water acts upon spoon portions positioned at increased radial distances so that the water acts with a greater torque arm to impart rotational energy.

REFERENCES:
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Rain Bird Corp. 2045PJ ½ Plastic Impact Sprinkler [online], publicly available from Rain Bird Corp. prior to Jul. 15, 2004 [retrieved Nov. 1, 2006], 2 pages. Retrieved from the Internet: <URL:http://www.rainbird.com/ag/products/impacts/2045pj.htm>.
Rain Bird Corp. 2045-PJ Maxi-Bird™ Full- or Part-Circle Impact Sprinkler [online], publicly available from Rain Bird Corp. prior to Jul. 15, 2004 [retrieved Nov. 1, 2006], 2 pages. Retrieved from the Internet: <URL: http://www.rainbird.com/landscape/products/impacts/2045pj—maxibird.htm>.
Rain Bird Corp. SLL20VH½ Steel Impact Sprinkler [online], publicly available from Rain Bird Corp. prior to Jul. 15, 2004 [retrieved Nov. 1, 2006], 2 pages. Retrieved from the Internet: <URL: http://web.archive.org/web/20050211205729/www.rainbird.com/ag/products/impacts/sll20vh.htm>.
Photographs of Rain Bird Corp. LF1200 Series Impact Sprinkler, publicly available from Rain Bird Corp. prior to Jul. 15, 2004 [photograph taken Nov. 1, 2006].
Photographs of Rain Bird Corp. SLL20VH½ Steel Impact Sprinkler, publicly available from Rain Bird Corp. prior to Jul. 15, 2004 [photograph taken Nov. 1, 2006].
Photographs of Rain Bird Corp. 2045PJ½ Plastic Impact Sprinkler, publicly available from Rain Bird Corp. prior to Jul. 15, 2004 [photograph taken Nov. 1, 2006].

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