Patents by Inventor Ismael A. Hernández
Ismael A. Hernández 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).
-
Publication number: 20110057069Abstract: A paperboard core suitable for use in winding yarns may include strips of paperboard wrapped about an axis and secured together to form an elongate structure defining a winding surface. A coating of a polymer such as polyvinylidene chloride covers the winding surface. The coating may be applied to the strips of paperboard prior to winding and/or applied to the winding surface after winding. The coating may comprise multiple layers of the polymer, which may be cured individually. The coating may also be applied so as to create a substantially uninterrupted coating along the winding surface. One method of applying the coating is by roll-coating.Type: ApplicationFiled: September 9, 2009Publication date: March 10, 2011Applicant: Sonoco Development, Inc.Inventors: Ismael A. Hernandez, Charles Lounsbury
-
Publication number: 20090173814Abstract: A yarn carrier is provided in the form of a yarn winding tube having a yarn catch insert. The yarn winding tube includes a recess through its surface for receiving the insert. The insert includes a yarn catching slot having a major opening located at one end of the slot, a minor opening adjacent the major opening and positioned in a circumferential direction of the tube, and a first step extending substantially axially between the major opening and minor opening. A catching groove, having a portion with an axial width smaller than a diameter of the yarn, is also included. When the yarn carrier is rotated and the yarn is positioned along the yarn catching slot, the yarn drops into the major opening, slides along the first step and is directed into the catching groove for winding.Type: ApplicationFiled: January 3, 2008Publication date: July 9, 2009Inventors: Ismael A. Hernandez, Brian P. Couchey
-
Patent number: 7332203Abstract: A forming tube for coated glass fiber is pervious to the vapors generated during the curing/drying process for the fiber. The forming tube can be formed from various materials, including but not limited to molded plastic with perforations, metal (e.g., a wire screen or cage structure), wound paperboard treated with sizing compound to render the paperboard impervious to liquid but pervious to vapors, wound synthetic paper or nonwoven material formed of synthetic fibers, or wound perforated paperboard.Type: GrantFiled: October 15, 2003Date of Patent: February 19, 2008Assignee: Sonoco Development, Inc.Inventor: Ismael A. Hernández
-
Publication number: 20070235580Abstract: A yarn carrier is provided in the form of a yarn winding tube having a yarn catch insert. The yarn winding tube is a hollow cylindrical tube having a longitudinal axis extending lengthwise between its first and second opposite ends. The tube has a hole through its surface for receiving a yarn catch insert. The yarn catch insert includes a first member and a second member, each having an inside surface. When positioned within the hole, the inside surfaces of the first and second members face each other and form a string-up groove therebetween. After a yarn winding and unwinding process, the yarn catch insert may be removed from the hole in the tube, the first and second member may be separated, and the string-up groove may be cleaned. The yarn catch insert may then be re-inserted into the hole and the tube may be reused for winding.Type: ApplicationFiled: June 5, 2007Publication date: October 11, 2007Applicant: Sonoco Development, Inc.Inventors: Ismael Hernandez, Brian Couchey, Clifford Bellum, Christoph Reicherz, Richard Mims
-
Patent number: 7240875Abstract: A yarn carrier is provided in the form of a yarn winding tube having a yarn catch insert. The yarn winding tube is a hollow cylindrical tube having a longitudinal axis extending lengthwise between its first and second opposite ends. The tube has a hole through its surface for receiving a yarn catch insert. The yarn catch insert includes a first member and a second member, each having an inside surface. When positioned within the hole, the inside surfaces of the first and second members face each other and form a string-up groove therebetween. After a yarn winding and unwinding process, the yarn catch insert may be removed from the hole in the tube, the first and second member may be separated, and the string-up groove may be cleaned. The yarn catch insert may then be re-inserted into the hole and the tube may be reused for winding.Type: GrantFiled: October 14, 2003Date of Patent: July 10, 2007Assignee: Sonoco Development, Inc.Inventors: Ismael A. Hernández, Brian P. Couchey, Clifford A. Bellum, Christoph Reicherz, Richard K. Mims
-
Publication number: 20060214049Abstract: A tubular article is formed of a spirally wound tube of paperboard. The paperboard tube has a circular cross-section at both its inner and outer surfaces. A shell of resin is pultruded onto the outer surface of the tube. Various resins can be used, including polyesters, vinyl esters, thermosetting epoxy resins, and others. The shell can optionally include reinforcing fibers, which can be short fibers or substantially continuous fibers oriented in various orientations relative to the paperboard tube. The reinforcing fibers can be in the form of rovings or fiber mats or woven fabrics. The shell's inner surface conforms to the circular outer surface of the tube and is intimately bonded thereto. The outer surface of the shell is defined by the pultrusion die to be non-circular in cross-section. Various non-circular shapes can be provided at the outer surface of the shell.Type: ApplicationFiled: March 23, 2005Publication date: September 28, 2006Inventor: Ismael Hernandez
-
Publication number: 20050268665Abstract: A forming tube for supporting glass fiber is disclosed that includes an elongate tube having opposing ends, an outer surface adapted to have glass fiber wound thereon, and an inner surface, the tube defining a central opening extending along a longitudinal axis of the tube for receiving a mandrel, the tube further defining an opening extending between the inner and outer surfaces thereof and located proximate one of the opposing ends, the opening designed to facilitate access to a start-up portion of the glass fiber from at least the central opening of the tube.Type: ApplicationFiled: June 8, 2004Publication date: December 8, 2005Inventors: Ismael Hernandez, Lee Roebuck
-
Publication number: 20050084673Abstract: A forming tube for coated glass fiber is pervious to the vapors generated during the curing/drying process for the fiber. The forming tube can be formed from various materials, including but not limited to molded plastic with perforations, metal (e.g., a wire screen or cage structure), wound paperboard treated with sizing compound to render the paperboard impervious to liquid but pervious to vapors, wound synthetic paper or nonwoven material formed of synthetic fibers, or wound perforated paperboard.Type: ApplicationFiled: October 15, 2003Publication date: April 21, 2005Inventor: Ismael Hernandez
-
Publication number: 20050077421Abstract: A yarn carrier is provided in the form of a yarn winding tube having a yarn catch insert. The yarn winding tube is a hollow cylindrical tube having a longitudinal axis extending lengthwise between its first and second opposite ends. The tube has a hole through its surface for receiving a yarn catch insert. The yarn catch insert includes a first member and a second member, each having an inside surface. When positioned within the hole, the inside surfaces of the first and second members face each other and form a string-up groove therebetween. After a yarn winding and unwinding process, the yarn catch insert may be removed from the hole in the tube, the first and second member may be separated, and the string-up groove may be cleaned. The yarn catch insert may then be re-inserted into the hole and the tube may be reused for winding.Type: ApplicationFiled: October 14, 2003Publication date: April 14, 2005Inventors: Ismael Hernandez, Brian Couchey, Clifford Bellum, Christoph Reicherz, Richard Mims
-
Patent number: 6872352Abstract: The invention relates to webs or batts including polytrimethylene terephthalate crimped staple fibers and fiberfill products comprising such webs and batts, as well as the processes of making the staple fibers, webs, batts and fiberfill products. According to the preferred process of making a web or batt, polytrimethylene terephthalate staple fibers, containing polytrimethylene terephthalate is melt spun at a temperature of 245-285° C. into filaments. The filaments are quenched, drawn and mechanically crimped to a crimp level of 8-30 crimps per inch (3-12 crimps/cm). The crimped filaments are relaxed at a temperature of 50-130° C. and then cut into staple fibers having a length of about 0.2-6 inches (about 0.5-about 15 cm). A web is formed by garnetting or carding the staple fibers and is optionally cross-lapped to form a batt. A fiberfill product is prepared with the web or batt.Type: GrantFiled: August 22, 2001Date of Patent: March 29, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: Ismael A. Hernandez, Geoffrey David Hietpas, James M. Howell
-
Patent number: 6835339Abstract: Poly(trimethylene terephthalate) tetrachannel cross-section staple fibers, as well as yarns, fiberfill webs, batts and products, and fabrics made therewith. Also, the process of making such staple fibers, yarns, fiberfill webs, batts and products, and fabrics.Type: GrantFiled: June 24, 2002Date of Patent: December 28, 2004Assignee: E. I. Du Pont de Nemours and CompanyInventors: Ismael A. Hernandez, Geoffrey David Hietpas, James M. Howell, Claudia Schultze
-
Patent number: 6752945Abstract: A process of making polytrimethylene terephthalate staple fibers, including (a) providing polytrimethylene terephthalate, (b) melt spinning the melted polytrimethylene terephthalate at a temperature of 245-285° C. into filaments, (c) quenching the filaments, (d) drawing the quenched filaments, (e) crimping the drawn filaments using a mechanical crimper at a crimp level of 8-30 crimps per inch (3-12 crimps/cm), (f) relaxing the crimped filaments at a temperature of 50-120° C., and (g) cutting the relaxed filaments into staple fibers having a length of about 0.2-6 inches (about 0.5-about 15 cm), and polytrimethylene terephthalate staple fibers, yarns and fabrics. Further, a process of optimizing the crimp take-up of a polytrimethylene terephthalate staple fiber including determining the relationship between denier and crimp take-up and manufacturing staple fibers having a denier selected based upon that determination.Type: GrantFiled: August 22, 2001Date of Patent: June 22, 2004Assignee: E. I. du Pont de Nemours and CompanyInventors: Ismael A. Hernandez, Geoffrey David Hietpas, James M. Howell, Claudia Schultze
-
Publication number: 20030071394Abstract: Poly(trimethylene terephthalate) tetrachannel cross-section staple fibers, as well as yarns, fiberfill webs, batts and products, and fabrics made therewith. Also, the process of making such staple fibers, yarns, fiberfill webs, batts and products, and fabrics.Type: ApplicationFiled: June 24, 2002Publication date: April 17, 2003Inventors: Ismael A. Hernandez, Geoffrey David Hietpas, James M. Howell, Claudia Schultze
-
Publication number: 20020153641Abstract: The invention relates to webs or batts comprising polytrimethylene terephthalate crimped staple fibers and fiberfill products comprising such webs and batts, as well as the processes of making the staple fibers, webs, batts and fiberfill products. According to the preferred process of making a web or batt comprising polytrimethylene terephthalate staple fibers, comprising polytrimethylene terephthalate is melt spun at a temperature of 245-285° C. into filaments. The filaments are quenched, drawn and mechanically crimped to a crimp level of 8-30 crimps per inch (3-12 crimps/cm). The crimped filaments are relaxed at a temperature of 50-130° C. and then cut into staple fibers having a length of about 0.2-6 inches (about 0.5-about 15 cm). A web is formed by garnetting or carding the staple fibers and is optionally cross-lapped to form a batt. A fiberfill product is prepared with the web or batt.Type: ApplicationFiled: August 22, 2001Publication date: October 24, 2002Inventors: Ismael A. Hernandez, Geoffrey David Hietpas, James M. Howell
-
Patent number: 6458455Abstract: Poly(trimethylene terephthalate) tetrachannel cross-section staple fibers, as well as yarns, fiberfill webs, batts and products, and fabrics made therewith. Also, the process of making such staple fibers, yarns, fiberfill webs, batts and products, and fabrics.Type: GrantFiled: August 22, 2001Date of Patent: October 1, 2002Assignee: E. I. du Pont de Nemours and CompanyInventors: Ismael A. Hernandez, Geoffrey David Hietpas, James M. Howell, Claudia Schultze
-
Publication number: 20020077013Abstract: Poly(trimethylene terephthalate) tetrachannel cross-section staple fibers, as well as yarns, fiberfill webs, batts and products, and fabrics made therewith. Also, the process of making such staple fibers, yarns, fiberfill webs, batts and products, and fabrics.Type: ApplicationFiled: August 22, 2001Publication date: June 20, 2002Inventors: Ismael A. Hernandez, Geoffrey David Hietpas, James M. Howell, Claudia Schultze
-
Publication number: 20020071951Abstract: A process of making polytrimethylene terephthalate staple fibers, comprising (a) providing polytrimethylene terephthalate, (b) melt spinning the melted polytrimethylene terephthalate at a temperature of 245-285° C. into filaments, (c) quenching the filaments, (d) drawing the quenched filaments, (e) crimping the drawn filaments using a mechanical crimper at a crimp level of 8-30 crimps per inch (3-12 crimps/cm), (f) relaxing the crimped filaments at a temperature of 50-120° C., and (g) cutting the relaxed filaments into staple fibers having a length of about 0.2-6 inches (about 0.5-about 15 cm), and polytrimethylene terephthalate staple fibers, yarns and fabrics. Further, a process of optimizing the crimp take-up of a polytrimethylene terephthalate staple fiber comprising determining the relationship between denier and crimp take-up and manufacturing staple fibers having a denier selected based upon that determination.Type: ApplicationFiled: August 22, 2001Publication date: June 13, 2002Inventors: Ismael A. Hernandez, Geoffrey David Hietpas, James M. Howell, Claudia Schultze
-
Patent number: 5540994Abstract: Fiberfill and/or multi-void fibers are identified and/or differentiated by one or more voids being partially filled with a differentiating characteristic that is a protuberance of characterizing polymer material. This material may be the same or different from that of the rest of the fiber. The protuberance is provided by appropriate adjustment of the spinning capillary, i.e., during extrusion to form the fiber.Type: GrantFiled: June 2, 1995Date of Patent: July 30, 1996Assignee: E. I. Du Pont de Nemours and CompanyInventor: Ismael A. Hernandez
-
Patent number: 5540993Abstract: Fiberfill and/or multi-void fibers are identified and/or differentiated by one or more voids being partially filled with a differentiating characteristic that is a protuberance of characterizing polymer material. This material may be the same or different from that of the rest of the fiber. The protuberance is provided by appropriate adjustment of the spinning capillary, i.e., during extrusion to form the fiber.Type: GrantFiled: June 2, 1995Date of Patent: July 30, 1996Assignee: E. I. Du Pont de Nemours and CompanyInventor: Ismael A. Hernandez
-
Patent number: 5527611Abstract: Hollow fibers are differentiated by their void being partially filled with a differentiating characteristic that is a protuberance of characterizing polymer material. This material may be the same or different from that of the rest of the fiber. The protuberance is provided by appropriate adjustment of the spinning capillary, i.e., during extrusion to form the fiber.Type: GrantFiled: June 2, 1995Date of Patent: June 18, 1996Assignee: E. I. Du Pont de Nemours and CompanyInventor: Ismael A. Hernandez