Patents by Inventor Timothy W. Pistner
Timothy W. Pistner has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7506488Abstract: Methods are provided for making slider-operated fasteners for use in reclosable plastic bags using at least a double index and dual unit operations. The methods involve forming two preseals, forming two notches within the preseals, applying two sliders into the previously formed notches, and applying two end stops proximate the previously applied sliders by having the various stations perform their respective functions, either simultaneously or at generally the same time, on different parts of the fastener spaced approximately at a double index. Also provided are methods of producing finished bags by applying the slider-operated fastener to a flat web of plastic film and conveying the web to a vertical or a horizontal form-fill-seal machine.Type: GrantFiled: April 26, 2007Date of Patent: March 24, 2009Assignee: Pactiv CorporationInventors: Toby R. Thomas, Nathan A. Kolovich, Craig E. Cappel, Timothy W. Pistner, Alexander R. Provan
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Patent number: 7228608Abstract: Methods are provided for making slider-operated fasteners for use in reclosable plastic bags using at least a double index and dual unit operations. The methods involve forming two preseals, forming two notches within the preseals, applying two sliders into the previously formed notches, and applying two end stops proximate the previously applied sliders by having the various stations perform their respective functions, either simultaneously or at generally the same time, on different parts of the fastener spaced approximately at a double index. Also provided are methods of producing finished bags by applying the slider-operated fastener to a flat web of plastic film and conveying the web to a vertical or a horizontal form-fill-seal machine.Type: GrantFiled: August 23, 2004Date of Patent: June 12, 2007Assignee: Pactiv CorporationInventors: Toby R. Thomas, Nathan A. Kolovich, Craig E. Cappel, Timothy W. Pistner, Alexander R. Provan
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Patent number: 7200911Abstract: Methods are provided for making slider-operated fasteners for use in reclosable plastic bags using at least a double index and dual unit operations. The methods involve forming two preseals, forming two notches within the preseals, applying two sliders into the previously formed notches, and applying two end stops proximate the previously applied sliders by having the various stations perform their respective functions, either simultaneously or at generally the same time, on different parts of the fastener spaced approximately at a double index. Also provided are methods of producing finished bags by applying the slider-operated fastener to a flat web of plastic film and conveying the web to a vertical or a horizontal form-fill-seal machine.Type: GrantFiled: August 20, 2004Date of Patent: April 10, 2007Assignee: Pactiv CorporationInventors: Toby R. Thomas, Nathan A. Kolovich, Craig E. Cappel, Timothy W. Pistner, Alexander R. Provan
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Patent number: 6780146Abstract: Methods are provided for making slider-operated fasteners for use in reclosable plastic bags using at least a double index and dual unit operations. The methods involve forming two preseals, forming two notches within the preseals, applying two sliders into the previously formed notches, and applying two end stops proximate the previously applied sliders by having the various stations perform their respective functions, either simultaneously or at generally the same time, on different parts of the fastener spaced approximately at a double index. Also provided are methods of producing finished bags by applying the slider-operated fastener to a flat web of plastic film and conveying the web to a vertical or a horizontal form-fill-seal machine.Type: GrantFiled: September 17, 2002Date of Patent: August 24, 2004Assignee: Pactiv CorporationInventors: Toby R. Thomas, Nathan A. Kolovich, Craig E. Cappel, Timothy W. Pistner, Alexander R. Provan
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Publication number: 20040050017Abstract: Methods are provided for making slider-operated fasteners for use in reclosable plastic bags using at least a double index and dual unit operations. The methods involve forming two preseals, forming two notches within the preseals, applying two sliders into the previously formed notches, and applying two end stops proximate the previously applied sliders by having the various stations perform their respective functions, either simultaneously or at generally the same time, on different parts of the fastener spaced approximately at a double index. Also provided are methods of producing finished bags by applying the slider-operated fastener to a flat web of plastic film and conveying the web to a vertical or a horizontal form-fill-seal machine.Type: ApplicationFiled: September 17, 2002Publication date: March 18, 2004Inventors: Toby R. Thomas, Nathan A. Kolovich, Craig E. Cappel, Timothy W. Pistner, Alexander R. Provan
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Patent number: 4840610Abstract: A method for forming a thermoplastic film handled bag comprising: forming a continuous collapsed thermoplastic tube having heat seal lines across the width of said tube at bag length intervals, longitudinally folding opposite sides of the heat sealed tube equally towards each other until they meet at a common center line, folding the structure once again in the same direction along said center line and removing eight film layers in one of the corner regions defined by a heat seal line and the spine of the common center line fold, the film removal yielding a bag mouth opening and single loop handles at near the opposite ends of said bag mouth opening. Interconnected bags can be formed into a roll pack or individually severed bags can be unitized into a bag pack.Type: GrantFiled: September 14, 1988Date of Patent: June 20, 1989Assignee: Mobil Oil CorporationInventor: Timothy W. Pistner
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Patent number: 4819806Abstract: A thermoplastic bag structure having, in its lay-flat condition, a front and rear bag wall, two-film heat seal bottom; the outer side margins of the full length of said bag being folded toward but spaced from each other. The top most edge of each fold is heat sealed through the four films thereof along lines corresponding to the width of the folds. An open mouth top portion being characterized by having double film handle loops at opposite ends of said mouth, said double film loops being extensions of the folded regions of said bags and the corresponding regions of said front and rear walls. The bag structures can be unitized by providing a detachable tab at the bag mouth opening and unitizing the bag structures through this tab.Type: GrantFiled: April 13, 1987Date of Patent: April 11, 1989Assignee: Mobil Oil CorporationInventor: Timothy W. Pistner
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Patent number: 4790437Abstract: A method for forming a thermoplastic film handled bag comprising: forming a continuous collapsed thermoplastic tube having heat seal lines across the width of said tube at bag length intervals, longitudinally folding opposite sides of the heat sealed tube equally towards each other until they meet at a common center line, folding the structure once again in the same direction along said center line and removing eight film layers in one of the corner regions defined by a heat seal line and the spine of the common center line fold, the film removal yielding a bag mouth opening and single loop handles at near the opposite ends of said bag mouth opening. Interconnected bags can be formed into a roll pack or individually severed bags can be unitized into a bag pack.Type: GrantFiled: November 26, 1984Date of Patent: December 13, 1988Assignee: Mobil Oil CorporationInventor: Timothy W. Pistner
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Patent number: 4699608Abstract: A thermoplastic bag structure having, in its lay-flat condition, a front and rear bag wall, a two-film heat seal bottom; the outer side margins of the full length of said bag being folded toward but spaced from each other. The top most edge of each fold is heat sealed through the four films thereof along line corresponding to the width of the folds. An open mouth top portion being characterized by having double film handle loops at opposite ends of said mouth, said double film loops being extensions of the folded regions of said bags and the corresponding regions of said front and rear walls. The bag structures can be unitized by providing a detachable tab at the bag mouth opening and unitizing the bag structures through this tab.Type: GrantFiled: April 9, 1986Date of Patent: October 13, 1987Assignee: Mobil Oil CorporationInventor: Timothy W. Pistner
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Patent number: 4604084Abstract: A thermoplastic bag structure comprising a front and rear bag wall, a bottom and an open mouth top portion, said open mouth portion being characterized by having two pairs of single film handle loops each of which are located at opposite ends of said open mouth portion, the handles of each pair being side-by-side and each handle is an integral single film loop extension of said front and rear bag walls. The bag structures can be unitized by providing a detachable tab at the bag mouth opening and unitizing the bag structures through this tab. The method of forming said bags involves providing an end sealed collapsed thermoplastic film tube and removing plastic to form a bag mouth opening and handles at one end thereof. The resulting bag is an ungussetted bag which can be unitized into a pack by providing a detachable, unitizing tab at the bag mouth opening.Type: GrantFiled: May 29, 1985Date of Patent: August 5, 1986Assignee: Mobil Oil CorporationInventor: Timothy W. Pistner
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Patent number: 4562925Abstract: A thermoplastic bag structure comprising a front and rear bag wall, a bottom and an open mouth top portion, said open mouth portion being characterized by having two pairs of single film handle loops each of which are located at opposite ends of said open mouth portion, the handles of each pair being side-by-side and each handle is an integral single film loop extension of said front and rear bag walls. The bag structures can be unitized by providing a detachable tab at the bag mouth opening and unitizing the bag structures through this tab. The method of forming said bags involves providing an end sealed collapsed thermoplastic film tube and removing plastic to form a bag mouth opening and handles at one end thereof. The resulting bag is an ungussetted bag which can be unitized into a pack by providing a detachable, unitizing tab at the bag mouth opening.Type: GrantFiled: November 19, 1984Date of Patent: January 7, 1986Assignee: Mobil Oil CorporationInventor: Timothy W. Pistner