Patents by Inventor Laurence Burst Sperry
Laurence Burst Sperry 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: 6629599Abstract: An apparatus is disclosed for enhancing the mixing of foam precursors in foam-in-bag precursor systems, to thereby enhance the quality of the resulting foam. The apparatus comprises a heated chamber for storing bags containing the precursors in separate compartments, an opening for dispensing the heated bags, and mechanical agitators for externally agitating the bag containing the separated foam-forming precursors to mix the precursors and form foam. Also, a foam cushion packaging precursor is disclosed and comprises such a heated bag.Type: GrantFiled: June 18, 2001Date of Patent: October 7, 2003Assignee: Sealed Air CorporationInventors: Laurence Burst Sperry, Anthony Orkin Davlin, Kerry Michael McKinley, George Teofilius Bertram
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Publication number: 20010049921Abstract: An apparatus is disclosed for enhancing the mixing of foam precursors in foam-in-bag precursor systems, to thereby enhance the quality of the resulting foam. The apparatus comprises a heated chamber for storing bags containing the precursors in separate compartments, an opening for dispensing the heated bags, and mechanical agitators for externally agitating the bag containing the separated foam-forming precursors to mix the precursors and form foam. Also, a foam cushion packaging precursor is disclosed and comprises such a heated bag.Type: ApplicationFiled: June 18, 2001Publication date: December 13, 2001Inventors: Laurence Burst Sperry, Anthony Orkin Davlin, Kerry Michael McKinley, George Teofilius Bertram
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Patent number: 6272813Abstract: A method is disclosed for of enhancing the mixing of foam precursors in foam-in-bag precursor systems, to thereby enhance the quality of the resulting foam. The method comprises externally agitating a bag formed from plastic film material and containing separated foam-forming precursors, to thereby mix the precursors and form foam, and wherein the bag has been warmed to a temperature above ambient temperature prior to the agitation.Type: GrantFiled: April 14, 1997Date of Patent: August 14, 2001Assignee: Sealed Air CorporationInventors: Laurence Burst Sperry, Anthony Orkin Davlin, Kerry Michael McKinley, George Teofilius Bertram
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Patent number: 6065636Abstract: A convective warmer for flexible plastic bags containing foam precursor chemicals includes an outer housing and an inner enclosure supported within the housing, the inner enclosure having foraminous floor and ceiling plates and foraminous dividers which divide the inner enclosure into vertical compartments for containing vertical stacks of bags. An air space exists between the housing and the inner enclosure, and a forced-air heater is arranged to heat air within the air space and circulate the heated air from the air space, through the foraminous floor plate into the compartments, and out the foraminous ceiling plate back into the air space. A loading door provides access to upper portions of the compartments for loading bags into the warmer, and a dispensing door provides access to lower portions of the compartments for removing a bottommost bag from a stack of bags in the warmer.Type: GrantFiled: March 13, 1998Date of Patent: May 23, 2000Assignee: Sealed Air CorporationInventors: Laurence Burst Sperry, Lawrence John Pillote, Vincent James Cavalier, Jr., Jesse Scott Drake, John Joseph Corrigan, III, George Teofilius Bertram
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Patent number: 5996782Abstract: A foam in bag cushion precursor is disclosed that is particularly useful for manual operation. The cushion precursor comprises a bag formed of two sheets of flexible plastic film material closed on all four side edges; a frangible seal that defines separate interior cells in a portion of the bag; a first foam precursor composition in one of the interior cells; and a second foam precursor composition in another of the interior cells. One of the cells has a nonfrangible seal wall other than one of the side edges for directing the contents of the cell to mix with the contents of the other cell before the mixed contents enter the remaining portion of said bag.Type: GrantFiled: April 14, 1997Date of Patent: December 7, 1999Assignee: Sealed Air CorporationInventors: Laurence Burst Sperry, Anthony Orkin Davlin, George Teofilius Bertram, Charles Paul Kannankeril
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Patent number: 5913603Abstract: A foam-in-bag packaging system is disclosed that comprises a mixing device for mixing foam precursors in a bag of flexible plastic film material sealed on all four sides by respective edge seals and having a plurality of frangible seals therein defining three separate interior cells in the bag. Two of the cells separately contain a first and second foam precursor composition and the cells are located at one end of the bag. The remainder of the bag is vented for permitting gases to escape from the bag as the foam precursors form foam while preventing foam or foam precursors from escaping from the bag. The mixing device ruptures the frangible seals to form a single interior cell and mixes the first and second foam precursors.Type: GrantFiled: May 5, 1997Date of Patent: June 22, 1999Assignee: Sealed Air Corporation (U.S.)Inventors: Laurence Burst Sperry, Anthony Orkin Davlin
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Patent number: 5899325Abstract: A foam-in-bag packaging system and method of forming the same is provided in which a bag of flexible plastic film material includes superposed panels joined around their peripheral edges to define an enclosed space which is vented to the outside of the bag by venting perforations in the panels, a packet or pouch of barrier material capable of maintaining foam precursor components in a stable, unreacted state for an extended time period is positioned in the enclosed space in the bag adjacent one end thereof and secured from movement therefrom, the packet has first and second compartments therein separated by a first frangible seal extending across the packet and first and second foam precursor components contained respectively in the first and second compartments, the packet has a second frangible seal between one of the compartments and the enclosed space in the bag, the bag being folded along spaced transverse fold lines into a relatively compact form and being folded along a fold line coincident with the fiType: GrantFiled: March 13, 1998Date of Patent: May 4, 1999Assignee: Sealed Air CorporationInventors: George Teofilius Bertram, William Richardson Armstrong, Lawrence John Pillote, William Joseph Mahon, Robert Don Wheeler, Laurence Burst Sperry
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Patent number: 5873221Abstract: A foam-in-place packaging system is disclosed that comprises a bag foamed of two sheets of flexible plastic film material sealed on all four sides by respective edge seals. A plurality of frangible seals are between the two sheets and define three separate interior cells in the bag. The frangible seals extend between the edge seals or between an edge seal and another frangible seal to thereby define a single cell bag when the frangible seals are broken. The cells separately contain a first and second foam precursor composition, and the bag includes means for permitting gases to vent from the bag as the foam precursors form foam while preventing foam or foam precursors from escaping from the bag.Type: GrantFiled: May 5, 1997Date of Patent: February 23, 1999Assignee: Sealed Air Corporation (U.S.)Inventors: Laurence Burst Sperry, Anthony Orkin Davlin
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Patent number: 5699902Abstract: A foam-in-place packaging system is disclosed that comprises a bag foamed of two sheets of flexible plastic film material sealed on all four sides by respective edge seals. A plurality of frangible seals are between the two sheets and define three separate interior cells in the bag. The frangible seals extend between the edge seals or between an edge seal and another frangible seal to thereby define a single cell bag when the frangible seals are broken. The cells separately contain a first and second foam precursor composition, and the bag includes means for permitting gases to vent from the bag as the foam precursors form foam while preventing foam or foam precursors from escaping from the bag.Type: GrantFiled: April 3, 1996Date of Patent: December 23, 1997Inventors: Laurence Burst Sperry, Anthony Orkin Davlin