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:
Feb. 02, 1988
Filed:
May. 05, 1986
Jack Lemkin, Cincinnati, OH (US);
Other;
Abstract
Several embodiments of drip emitters are disclosed. These embodiments comprise (1) a molded plastic, body with an upwardly opening housing, and (2) a molded plastic plug including an enlarged head, a depending shank, and a helical thread defined about the perimeter of the shank. The body is executed in a relatively soft plastic, while the plug is executed in a harder plastic. The shank of the plug is press-fitted into the housing, and the threads on the shank of the plug cut into the softer plastic of the housing. By advancing or retracting the plug, the length of the helical flow path is altered and the rate of discharge of droplets from the emitter is changed to account for changes in line pressure, accumulation of debris in the emitter, and other operational parameters.