Closable opening device for sealed packages of pourable food products
AssigneeTetra Laval Holdings & Finance S.A.
InventorsMauro Laciacera, Claudia Miani
Life of this patent
Estimating the term…
Abstract
A closable opening device (2) having a frame (15) defining a through hole (16) and fitted about a pierceable portion (4) of a sealed package (1) for pourable food products; a removable threaded cap (17) which screws onto the frame (17) to close the hole (16); and a tubular cutting member (18), which engages the hole (16) in movable manner along a spiral feed path, is connected angularly to the cap (17) during disengagement of the cap (17) from the frame (15) when first opening the package (1), and has an end edge (40) in turn having, on the face, a single cutter (55) acting along a major portion (C) of the periphery of the pierceable portion (4) to open the package (1).
Claims14
A closable opening device for a sealed package containing a pourable food product, said device comprising:
- a frame defining a through hole and fitted about a pierceable portion of said package;
- a removable threaded cap which screws onto said frame to close said hole;
- a tubular cutting member which engages said hole in angularly and axially movable manner, is connected angularly to said cap at least during disengagement of the cap from said frame when first opening said package, and has an end edge in turn having, on the face, cutting means cooperating with said pierceable portion to open said package;
- connecting means interposed between said frame and said cutting member, and defining a helical feed path along which the cutting member is fed through said pierceable portion;
- and
- wherein said cutting means comprise a single cutter acting along a major portion of the periphery of said pierceable portion.
A closable opening device for a sealed package containing a pourable food product, said device comprising:
- a frame defining a through hole and fitted about a pierceable portion of said package;
- a removable threaded cap which screws onto said frame to close said hole;
- a tubular cutting member which engages said hole in angularly and axially movable manner, is connected angularly to said cap at least during disengagement of the cap from said frame when first opening said package, and has an end edge in turn having, on the face, cutting means cooperating with said pierceable portion to open said package;
- connecting means interposed between said frame and said cutting member, and defining a helical feed path along which the cutting member is fed through said pierceable portion;
- and
- wherein said cutting means comprise a single cutter acting along a major portion of the periphery of said pierceable portion and said frame comprises a cylindrical collar for receiving said cap and defining said hole;
- and said connecting means comprise a first and a second thread engaging each other and formed on respective lateral surfaces of said collar and said cutting member respectively.
A closable opening device for a sealed package containing a pourable food product, said device comprising:
- a frame defining a through hole and fitted about a pierceable portion of said package;
- a removable threaded cap which screws onto said frame to close said hole;
- a tubular cutting member which engages said hole in angularly and axially movable manner, is connected angularly to said cap at least during disengagement of the cap from said frame when first opening said package, and has an end edge in turn having, on the face, cutting means cooperating with said pierceable portion to open said package;
- connecting means interposed between said frame and said cutting member, and defining a helical feed path along which the cutting member is fed through said pierceable portion;
- and
- a one-way angular transmission means interposed between said cap and said cutting member.
A closable opening device for a sealed package containing a pourable food product, said device comprising:
- a frame defining a through hole and fitted about a pierceable portion of said package;
- a removable threaded cap which screws onto said frame to close said hole;
- a tubular cutting member which engages said hole in angularly and axially movable manner, is connected angularly to said cap at least during disengagement of the cap from said frame when first opening said package, and has an end edge in turn having, on the face, cutting means cooperating with said pierceable portion to open said package;
- connecting means interposed between said frame and said cutting member, and defining a helical feed path along which the cutting member is fed through said pierceable portion;
- and
- wherein said frame and said cutting member are molded in one piece in a preassembly configuration, in which they are secured coaxially to each other by breakable connecting means.
Dependencies are inferred from the claim text.