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US3907172A Expired / Lapsed US ⏱️ 0.0 years remaining

Container spouts and strainers

Assignee: Illinois Tool Works Inc
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Filing: 1974-08-08
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Granted: 1975-09-23
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Expires: 1994-08-08
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Abstract

Abstract The embodiment of the invention disclosed herein is directed to a pour spout for a container. The pour spout comprises a thin flexible plastic sheet material member encircling the container. One margin of the sheet plastic material member is straight and engages the container adjacent an annular bead formed about the openable end of the container. The opposite margin of the sheet of flexible plastic material is substantially elliptical in configuration to form an elliptical opening for the pour spout when it is placed in a pouring position. The thin flexible plastic material about the container is doubled back upon itself along the annular periphery adjacent the bead to form a fluidtight seal therewith. The pouring area of the pour spout is reinforced to increase its rigidity to support the liquid when being poured.

Inventors

  • 👤 Gary Martin Curtis

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 12:05
CPC Classifications
B; B65; B65D; B65D25/00; B65D25/38; B65D25/40; B65D25/42; B65D2517/00; B65D2517/0001; B65D2517/0047; B65D2517/0049

Claims Analysis

Total Claims: 25
Claim 1
Independent Claim 180 words
A container and pour spout structure comprising a container body adapted to be opened at one end thereof, a tubular flexible sheet material pour spout member about and substantially in contact at opposite ends thereof with said body, said flexible sheet matErial member having a first margin continuously encircling and tightly engaging and fixed with respect to said body adjacent said one end of the body and a second margin spaced substantially away from said one body end toward an opposite end of said body, said first margin having a continuous inner surface in sealing contact with said container body around its circumference and provided in its entirety by a single surface portion of said tubular member, said flexible sheet material member being manually manipulatable by peeling said second margin back over and past said first margin and beyond said one end of the body so that the sheet material member is turned inside-out and provides said pour spout, said first margin remains fixed adjacent said one end of the container body during said peeling back of said second margin.
Claim 2
Dependent Claim 180 words
A container and pour spout structure comprising a container body adapted to be opened at one end thereof, a tubular flexible sheet material pour spout member about and substantially in contact at opposite ends thereof with said body, said flexible sheet matErial member having a first margin continuously encircling and tightly engaging and fixed with respect to said body adjacent said one end of the body and a second margin spaced substantially away from said one body end toward an opposite end of said body, said first margin having a continuous inner surface in sealing contact with said container body around its circumference and provided in its entirety by a single surface portion of said tubular member, said flexible sheet material member being manually manipulatable by peeling said second margin back over and past said first margin and beyond said one end of the body so that the sheet material member is turned inside-out and provides said pour spout, said first margin remains fixed adjacent said one end of the container body during said peeling back of said second margin.
Claim 3
Dependent Claim 32 words
A container and pour spout structure as defined in claim 1 wherein said second margin includes a pull-tab portion extending farther from said first margin than remaining portions of the second margin.
Claim 4
Dependent Claim 41 words
A container and pour spout structure as set forth in claim 1, wherein said first margin of said sheet material comprises a double thickness of the sheet material providing a fluid-tight seal between the pour spout member and said container body.
Claim 5
Dependent Claim 41 words
A container and pour spout structure as defined in claim 1 wherein said container includes a radially projecting annular ridge at said one end of the body, said flexible shet material member being stretchable over said ridge during said manual manipulation.
Claim 6
Dependent Claim 37 words
A container and pour spout structure as set forth in claim 1 wherein said flexible sheet material member is of double thickness along an axially extending portion thereof and to form a stiffener for the pour spout.
Claim 7
Dependent Claim 41 words
A container and pour spout structure as set forth in claim 1 wherein said flexible sheet material member extends from said container when peeled back upon itself a length sufficient to be tied to close off the top of the container.
Claim 8
Dependent Claim 24 words
A container and pour spout structure as set forth in claim 2 wherein said ridge is circular in configuration and said body is cylindrical.
Claim 9
Dependent Claim 35 words
A container and pour spout structure as set forth in claim 1 further including stiffening means secured to said flexible sheet material along a longitudinally extending portion thereof to provide support along a pour surface.
Claim 10
Dependent Claim 74 words
A container and pour spout structure as set forth in claim 1 wherein said first margin is in contact with an underside of said ridge and includes a container engaging portion extending therefrom when the pour spout is in the pouring position, said flexible sheet material member further including an integral portion overlying said container engaging portion to increase gripping thereof with said container when the flexible sheet material is peeled back upon itself.
Claim 11
Dependent Claim 82 words
A container and pour spout structure as set forth in claim 1 wherein said flexible sheet material member is a flat sheet of plastic, said flat sheet of plastic having one marginal portion thereof cut substantially in parabolic fashion to have poriton of maximum length formed along opposite sides of the sheet, said opposite sides being folded upon themselves to form a double thickness along said portion of maximum length for stiffening a pour area extending along said portion of maximum length.
Claim 12
Dependent Claim 61 words
A container and pour spout structure as set forth in claim 1 wherein said flexible sheet material member if formed of flattened tubing and wherein said first marginal portion is cut perpendicularly to the longitudinal axis of said tubing and said second marginal portion is cut diagonally across said tubing with a portion of maximum length formed along one side thereof.
Claim 13
Dependent Claim 205 words
A container and strainer structure comprising a container body adapted to be opened at one end thereof, a tubular flexible sheet material strainer member about and substantially in contact at opposite ends thereof with said body, said flexible sheet material member having a first margin continuously encircling and tightly engaging and fixed with respect to said body adjacent said one end of the body and a second margin spaced substantially away from said one body end toward an opposite end of said body, said first margin having a continuous inner surface in sealing contact with said container body around its circumference and provided in its entirety by a single surface portion of said tubular member, said flexible sheet material member being manually manipulatable by peeling said second margin back over and past said first margin and beyond said one end of the body so that the sheet material member is turned inside-out, said first margin remaining fixed adjacent said one end of the container body during said peeling back of said second margin, said flexible sheet material member having a portion with a plurality of apertures to form a strainer adapted to be pulled over the top of the container for pouring of fluids therethrough.
Claim 14
Dependent Claim 205 words
A container and strainer structure comprising a container body adapted to be opened at one end thereof, a tubular flexible sheet material strainer member about and substantially in contact at opposite ends thereof with said body, said flexible sheet material member having a first margin continuously encircling and tightly engaging and fixed with respect to said body adjacent said one end of the body and a second margin spaced substantially away from said one body end toward an opposite end of said body, said first margin having a continuous inner surface in sealing contact with said container body around its circumference and provided in its entirety by a single surface portion of said tubular member, said flexible sheet material member being manually manipulatable by peeling said second margin back over and past said first margin and beyond said one end of the body so that the sheet material member is turned inside-out, said first margin remaining fixed adjacent said one end of the container body during said peeling back of said second margin, said flexible sheet material member having a portion with a plurality of apertures to form a strainer adapted to be pulled over the top of the container for pouring of fluids therethrough.
Claim 15
Dependent Claim 162 words
A pour spout structure for a container body adapted to be opened at one end thereof, said pour spout structure comprising a tubular flexible sheet material pour spout member for encircling said body, said flexible sheet mateiral member having a first uninterrupted margin having an annular inner surface provided in its entirety by a single surface of said tubular member for continuously encircling and tightly sealingly engaging and fixedly holding said body adjacent said one end of the body, and a second margin spaced substantially away from said first margin for positioning toward an opposite end of said body, said flexible sheet material member being manually manipulatable by peeling said second margin back over and past said first margin and beyond said one end of the body so that the sheet material member is turned inside-out for providing a pour spout while said first margin remains fixed adjacent said one end of said body during said peeling back of said second margin.
Claim 16
Dependent Claim 162 words
A pour spout structure for a container body adapted to be opened at one end thereof, said pour spout structure comprising a tubular flexible sheet material pour spout member for encircling said body, said flexible sheet mateiral member having a first uninterrupted margin having an annular inner surface provided in its entirety by a single surface of said tubular member for continuously encircling and tightly sealingly engaging and fixedly holding said body adjacent said one end of the body, and a second margin spaced substantially away from said first margin for positioning toward an opposite end of said body, said flexible sheet material member being manually manipulatable by peeling said second margin back over and past said first margin and beyond said one end of the body so that the sheet material member is turned inside-out for providing a pour spout while said first margin remains fixed adjacent said one end of said body during said peeling back of said second margin.
Claim 17
Dependent Claim 30 words
A pour spout structure as defined in claim 13 wherein said second margin includes a pull-tab portion extending farther from said first margin than remaining portions of the second margin.
Claim 18
Dependent Claim 41 words
A pour spout structure as set forth in claim 13, wherein said first margin of said sheet material member comprises a double thickness of the sheet material for providing a fluid-tight seal between the pour spout member and said container body.
Claim 19
Dependent Claim 35 words
A pour spout structure as set forth in claim 13 wherein said flexible sheet material member is of double thickness along an axially extending portion thereof and to form a stiffener for the pour spout.
Claim 20
Dependent Claim 39 words
A pour spout structure as set forth in claim 13 wherein said flexible sheet material member extends from said container when peeled back upon itself a length sufficient to be tied to close off the top of the container.
Claim 21
Dependent Claim 34 words
A pour spout structure as set forth in claim 13 further including stiffening means secured to said flexible sheet material member along a longitudinally extending portion thereof to provide support along a pour surface.
Claim 22
Dependent Claim 80 words
A pour spout structure as set forth in claim 13 wherein said flexible sheet material member is a flat sheet of plastic, said flat sheet of plastic having one marginal portion thereof cut substantially in parabolic fashion to have portion of maximum length formed along opposite sides of the sheet, said opposite sides being folded upon themselves to form a double thickness along said portion of maximum length for stiffening a pour area extending along said portion of maximum length.
Claim 23
Dependent Claim 59 words
A pour spout structure as set forth in claim 13 wherein said flexible sheet material member is formed of flattened tubing and wherein said first marginal portion is cut perpendicularly to the longitudinal axis of said tubing and said second marginal portion is cut diagonally across said tubing with a portion of maximum length formed along one side thereof.
Claim 24
Dependent Claim 185 words
strainer structure for a container body adapted to be opened at one end thereof, said strainer strUcture comprising a tubular flexible sheet material strainer member for encircling said body, said flexible sheet material member having a first uninterrupted margin having an annular inner surface provided in its entirety by a single surface of said tubular member for continuously encircling and tightly sealingly engaging and fixedly holding said body adjacent said one end of the body, and a second margin spaced substantially away from said first margin for positioning toward an opposite end of said body, said flexible sheet material member being manually manipulatable by peeling said second margin back over and past said first margin and beyond said one end of the body so that the sheet material member is turned inside-out while said first margin remains fixed adjacent said one end of said body during said peeling back of said second margin, said flexible sheet material member having a portion with a plurality of apertures to form a strainer adapted to be pulled over the top of the container for pouring of fluids therethrough.
Claim 25
Dependent Claim 185 words
strainer structure for a container body adapted to be opened at one end thereof, said strainer strUcture comprising a tubular flexible sheet material strainer member for encircling said body, said flexible sheet material member having a first uninterrupted margin having an annular inner surface provided in its entirety by a single surface of said tubular member for continuously encircling and tightly sealingly engaging and fixedly holding said body adjacent said one end of the body, and a second margin spaced substantially away from said first margin for positioning toward an opposite end of said body, said flexible sheet material member being manually manipulatable by peeling said second margin back over and past said first margin and beyond said one end of the body so that the sheet material member is turned inside-out while said first margin remains fixed adjacent said one end of said body during said peeling back of said second margin, said flexible sheet material member having a portion with a plurality of apertures to form a strainer adapted to be pulled over the top of the container for pouring of fluids therethrough.

References Cited (Backward Citations)

US3279657A Cited
US3726447A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-09-22 1979-03-24 1979-09-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-09-22 1983-03-24 1983-09-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-09-22 1987-03-24 1987-09-23 $7700.00 Window Closed / Lapsed

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