US 11,857,995 B2
Two-component piston for a cartridge, and a cartridge
Manfred Obrist, Lustenau (AT); Philipp Seiler, Au (CH); and Renato Brunner, Dornbirn (AT)
Assigned to MEDMIX SWITZERLAND AG, Haag (CH)
Filed by medmix Switzerland AG, Haag (CH)
Filed on May 31, 2022, as Appl. No. 17/829,311.
Application 17/829,311 is a division of application No. 16/772,911, granted, now 11,498,094, previously published as PCT/EP2018/084963, filed on Dec. 14, 2018.
Claims priority of application No. 17209077 (EP), filed on Dec. 20, 2017.
Prior Publication US 2022/0288628 A1, Sep. 15, 2022
Int. Cl. A61M 5/315 (2006.01); B05C 17/005 (2006.01); B29C 45/00 (2006.01); B29C 45/16 (2006.01); B65D 81/32 (2006.01); B65D 83/00 (2006.01); B29K 23/00 (2006.01); B29K 67/00 (2006.01); B29K 77/00 (2006.01); B29L 31/00 (2006.01)
CPC B05C 17/00579 (2013.01) [A61M 5/315 (2013.01); A61M 5/31513 (2013.01); B05C 17/00559 (2013.01); B29C 45/0025 (2013.01); B29C 45/1676 (2013.01); B65D 81/325 (2013.01); B65D 83/0005 (2013.01); B29C 2045/0027 (2013.01); B29C 2045/1682 (2013.01); B29K 2023/06 (2013.01); B29K 2023/065 (2013.01); B29K 2067/006 (2013.01); B29K 2077/00 (2013.01); B29L 2031/7494 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A two-component piston for a cartridge comprising:
a piston cover; and
a piston body, the piston cover movable relative to the piston body, and the piston cover being non-releasably connected to the piston body by a non-releasable connection, the non-releasable connection between the piston body and the piston cover being produced by a web of material projecting from the piston body and extending through an aperture in attachment portion of the piston cover, and
the attachment portion projecting from the piston cover at least generally in a direction into the piston body.