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:
Mar. 24, 2020
Filed:
May. 17, 2016
Enplas Corporation, Saitama, JP;
Daisuke Morikoshi, Saitama, JP;
Enplas Corporation, Saitama, JP;
Abstract
This emitter () has a first valve seat part () provided around a hole () which forms a portion of a flow path between a reduced-pressure flow path and a discharge part. The first valve seat part () is formed by a three-step recessed circumferential surface, and is provided with one groove () which intersects said three-step recessed circumferential surface, and becomes shallower as said groove approaches the hole (). As the external liquid pressure increases, a film () gradually bends towards the first valve seat part (), and the open area of the groove () gradually decreases. The flow rate of an irrigation liquid is adjusted to an amount capable of passing through the opening of the groove ().