The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 27, 2012
Filed:
Jan. 31, 2010
Amir Cohen, Yuvalim, IL;
Amir Cohen, Yuvalim, IL;
Amirim Products Development & Patents Ltd., Yuvalim, IL;
Abstract
A drip emitter formed from an elastomer component and a rigid polymer component for welding to the inner surface of an irrigation hose. The drip emitter has a fluid flow pathway including a flow restriction, typically in the form of a labyrinth, formed at least partially within the elastomer to provide a variable geometry flow restriction. The flow restriction may include under-tooth bypass spaces located between the base and the sequence of baffles, over-tooth bypass clearances or may employ baffles with a thickened root portion which forms a sloped transition region between an upright upper wall portion and the base. In each case, flow through the drip emitter when deployed is regulated by pressure-responsive deformation of the elastomer component. Some implementations employ a thermoset elastomer component such as silicone with mechanical interlocking between the components.