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Patent Searching and Data


Title:
SEAL
Document Type and Number:
WIPO Patent Application WO/2019/137904
Kind Code:
A1
Abstract:
The invention relates to a seal (11), in particular a rod seal for sealing an axially movable rod (9, 10) in a guide cylinder, in particular a piston seal for a pneumatically, electrically or hydraulically driven coating agent pump for pumping coating agent, said seal having an annular sealing element (13, 14) for bearing sealingly against a lateral surface of an axially movable rod, and at least one elastic, annular preloading element (15), the annular preloading element (15) radially surrounding the outside of the annular sealing element (13, 14) and preloading it radially inwards. The invention provides an annular main seal body (16), which surrounds the sealing element (13, 14) and the preloading element (15) on the outside and holds them. Furthermore, the invention also comprises a reversed variant in which the seal is situated in an annular groove in a lateral surface of a piston and bears sealingly against the cylinder running surface.

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Inventors:
MARTIN, Herbert (Brückenstraße 46, Weinstadt, 71384, DE)
STIEGLER, Martin (Steinbeisstraße 9, Beilstein, 71717, DE)
MAYER, Hannes (Neue Str. 56/1, Ludwigsburg, 71642, DE)
SCHÄFER, Ralf (Hermann-Kurz-Straße 3, Marbach, 71672, DE)
Application Number:
EP2019/050326
Publication Date:
July 18, 2019
Filing Date:
January 08, 2019
Export Citation:
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Assignee:
DÜRR SYSTEMS AG (Carl-Benz-Straße 34, Bietigheim-Bissingen, 74321, DE)
International Classes:
F16J15/3248; F04B9/00; F04B43/00; F15B15/14; F16J15/18; F16J15/3252
Domestic Patent References:
WO2015144317A12015-10-01
Foreign References:
US3511511A1970-05-12
US20140291936A12014-10-02
DE4403449A11995-08-17
GB1085194A1967-09-27
US6217029B12001-04-17
US20060024172A12006-02-02
DE2743376A11978-05-24
US20110298183A12011-12-08
US20140291936A12014-10-02
DE102005059926A12007-06-21
Attorney, Agent or Firm:
V. BEZOLD & PARTNER PATENTANWÄLTE - PARTG MBB (Akademiestraße 7, München, 80799, DE)
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