- Patent Title: Barrel pump having a follower plate with an adjustable sealing ring
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Application No.: US16325459Application Date: 2017-08-15
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Publication No.: US11034575B2Publication Date: 2021-06-15
- Inventor: Thomas Hausner , Gerrit Enderle , Siegmund Oberhofer
- Applicant: Atlas Copco IAS GmbH
- Applicant Address: DE Bretten
- Assignee: Atlas Copco IAS GmbH
- Current Assignee: Atlas Copco IAS GmbH
- Current Assignee Address: DE Bretten
- Agency: Collard & Roe, P.C.
- Priority: DE102016010622.0 20160905,DE102017100712.1 20170116
- International Application: PCT/EP2017/070672 WO 20170815
- International Announcement: WO2018/041628 WO 20180308
- Main IPC: B67D7/64
- IPC: B67D7/64 ; B05C11/10

Abstract:
A method for conveying viscous material out of a barrel-like container open towards the top and having a bottom and a circumferential wall extending from bottom to top, uses a device having a follower plate for closing the container. The plate has a circumferential wiper ring having a radially outwardly protruding contact portion for contacting an inner container wall face facing the plate. A variable pressing force can be applied to press the contact portion against the inner face. The plate, following a decreasing material level and resting on the material surface, is moved bottomward, and, after the container is emptied, is moved away from the bottom, and the contact portion is pressed sealingly against the inner face while the plate moves bottomward. The sealing effect between the wiper ring and the container wall is suspended during plate movement away from the bottom by reducing the pressing force.
Public/Granted literature
- US20190210865A1 BARREL PUMP HAVING A FOLLOWER PLATE WITH AN ADJUSTABLE SEALING RING Public/Granted day:2019-07-11
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