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. 17, 2026
Filed:
Jan. 21, 2024
Tefen Flow and Dosing Technologies Ltd., Kibbutz Nachsholim, IL;
Zvi Weingarten, Evron, IL;
Gideon Sagi, Kfar Vradim, IL;
Tefen Flow and Dosing Technologies LTD., Kibbutz Nachsholim, IL;
Abstract
A hydraulic proportional additive dosing pump (ADP) has a plunger associated with an actuator rod and displaceable along a cylinder. A bidirectional roll diaphragm is deployed between an internal surface of the cylinder and an outer surface of the plunger so as to form a rolling seal between upper and lower chambers of the cylinder. An additive pump is driven by motion of the actuator rod. A switchable valve arrangement directs inlet water pressure alternately to the upper chamber and the lower chamber, switching at end of each stroke. The bidirectional roll diaphragm is deployed such that, for at least part of the down-stroke and for at least part of the up-stroke, a majority of an area of the bidirectional roll diaphragm is supported in contact with either the cylinder or the plunger.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile