Fluid sprinkling – spraying – and diffusing – Distributor continuously moves relative to support during... – Transmission details
Reexamination Certificate
2007-09-18
2009-02-03
Tran, Len (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Distributor continuously moves relative to support during...
Transmission details
C239S232000, C239S261000, C239S251000, C239S258000, C239S263000
Reexamination Certificate
active
07484674
ABSTRACT:
The present invention provides an improved water flow switching mechanism of a gear-type sprinkler, which addresses problems of typical gear-type sprinklers, such as invalid water switching and poor stability. The gear-type sprinkler includes a water inlet portion, a water outlet portion and accommodating space. A convex framework is additionally placed onto the accommodating space opposite the separate water outlets. Two lateral grooves are defined in the convex framework, each corresponding to a water outlet. So the pivotal portion of the rotary switching seat is assembled centrally into the convex framework. The rotary switching seat is provided with two opposite extension flanges. The extension flange may block the lateral groove of the convex framework in line with the swinging direction of the rotary switching seat. The water-stop area of rotary switching seat is greatly increased, thus ensuring the stability of the water flow switching state and improving performance of the sprinkler.
REFERENCES:
patent: 3523647 (1970-08-01), Radecki
patent: 5975430 (1999-11-01), Larsen
patent: 6820825 (2004-11-01), Wang
patent: 2007/0119978 (2007-05-01), Wang et al.
patent: 2406805 (2005-04-01), None
Egbert Law Offices PLLC
Hogan James S
Tran Len
LandOfFree
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