Closure for receptacles for receiving free-flowing filling material

Claim 1

A one-piece closure for a receptacle containing flowable material, said closure comprising: a substantially rigid closure cap body attached to an end of said receptacle in firmly sealing fashion, said receptacle having a vertical axis that passes through said cap body, and said cap body including: a cylindrical wall coaxial with said vertical axis, a cap base continuous with but perpendicular to said cylindrical wall, a rigid wall section parallel to said cap base and defining a bottom of a generally rectangular recess formed in said base, a sleeve coaxial with said cylindrical wall and extending from said rigid wall section away from said cap base; a pair of webs inward of said cylindrical wall and formed perpendicular to said rigid wall section and on said rigid wall section, said webs having first and second ends, said first ends being formed on said rigid wall section, a respective bar projection facing inwardly and formed on each of said second ends of said webs; and a substantially rigid pouring spour including: a plate having a first end connected to said cap base through a joint line whereby said pouring spout is swivellable between a swung-out pouring position and a locked position, said plate in said locked position being approximately in a plane defined by said cap base and covering said recess, said plate having a second end distant from said first end of said plate, a hollow conduit formed on said plate allowing passage of said flowable material, said conduit extending between said first and second ends of said plate in said recess in said locked position of said spout, respective bar sections formed along opposite sides of an outer curved surface of said conduit and projecting outwardly and elastically engageable by the respective bar projections when said pouring spout is in the locked position, and a membrane-like flexible wall sealingly connecting said sleeve with a first end of said spout.