Title: Apparatus for the detachable connection of a piston with a piston plunger

Abstract: An apparatus for the detachable connection of an axially to-and-fro movable piston of a syringe with a piston rod or plunger, comprising at least two holder brackets arranged in mutually spaced relationship from one another at the piston plunger and formed of a spring wire, detachably secured with said piston plunger. Each holder bracket essentially comprises two respective axially extending webs and a connection element or piece arranged transversely with respect to said webs. The piston of the syringe possesses a headpiece formed as a substantially truncated cone and equipped with a contact edge engaged by said connection pieces.

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Inventors: Stait, Donald P. (Steinmaur, CH)

Application Number: 820925
Filing Date: 1977-08-01
Publication_date: 1979-03-20
Assignee: Contraves AG (Zurich, CH)
Primary Class(es): 604/218
Other Classes:
US Patent Ref:

RE17059	Aug, 1928	Hein	128/218.
3164303	Jan, 1965	Trautmann	128/218.
3742949	Jul, 1973	Hill	128/218.
3831601	Aug, 1974	Kessell	128/218.

Other Refs:
Primary Examiner: Yasko, John D.
Assistant Examiner:
Attorney: Kleeman; Werner W.