Patents Assigned to Dura-Line
-
Patent number: 11753601Abstract: A polymeric material mixture comprising a fluorine-containing polymer, a siloxane polymer, and at least two polymer processing additives (PPA), wherein the at least two polymer processing additives have different chemistries. For example, there can be a flexible coextruded pipe for providing a protective housing for cables, fluids, sludge or solids, the pipe comprising a pair of telescopically related inner and outer layers, where said inner layer is lubricated with the polymeric material mixture.Type: GrantFiled: February 14, 2022Date of Patent: September 12, 2023Assignee: Dura-Line LLCInventors: H. Thomas Chung, Fei Fan, Sung Ki Cho, Sam Lukubira, Caleb Michael Spradling, Arturo Valencia
-
Patent number: 11702612Abstract: A polymeric material mixture comprising a fluorine-containing polymer, a siloxane polymer, and at least two polymer processing additives (PPA), wherein the at least two polymer processing additives have different chemistries. For example, there can be a flexible coextruded pipe for providing a protective housing for cables, fluids, sludge or solids, the pipe comprising a pair of telescopically related inner and outer layers, where said inner layer is lubricated with the polymeric material mixture.Type: GrantFiled: April 5, 2021Date of Patent: July 18, 2023Assignee: Dura-Line LLCInventors: H. Thomas Chung, Fei Fan, Sung Ki Cho, Sam Lukubira, Caleb Michael Spradling, Arturo Valencia
-
Patent number: 11609297Abstract: The present inventive concept includes a duct system and method for using same to map and locate ducts. A preferred embodiment of the duct system includes a duct, a plurality of electronic information modules and an oversheath at least partially covering the plurality of information modules and fixing the information modules to the duct. The plurality of information modules are configured to emit a positional signal to enable location of the information modules and associated duct(s) and/or mapping of the duct system.Type: GrantFiled: December 27, 2018Date of Patent: March 21, 2023Assignee: Dura-Line LLCInventors: Timothy A. Grimsley, Thomas McCall
-
Patent number: 10870382Abstract: This disclosure discloses various technologies for loading, transporting, and unloading of loads, such as reels, cylinders, containers, and others.Type: GrantFiled: January 5, 2018Date of Patent: December 22, 2020Assignee: Dura-Line CorporationInventor: Timothy A. Grimsley
-
Patent number: 10429267Abstract: Disclosed herein is a pipe assembly containing a pipe, an insulating jacket coupled to the pipe via an attachment base; and a tracer wire within the insulating jacket. The width of the attachment base is greater than width of the insulating jacket. Also disclosed herein are methods of locating a pipe concealed below a ground surface, and detecting the presence and the position of a leak in a pipe concealed below a ground surface.Type: GrantFiled: June 22, 2016Date of Patent: October 1, 2019Assignee: DURA-LINE CORPORATIONInventor: Timothy A Grimsley
-
Patent number: 10197660Abstract: The present inventive concept includes a duct system and method for using same to map and locate ducts. A preferred embodiment of the duct system includes a duct, a plurality of electronic information modules and an oversheath at least partially covering the plurality of information modules and fixing the information modules to the duct. The plurality of information modules are configured to emit a positional signal to enable location of the information modules and associated duct(s) and/or mapping of the duct system.Type: GrantFiled: April 13, 2017Date of Patent: February 5, 2019Assignee: DURA-LINE CORPORATIONInventors: Timothy A. Grimsley, Thomas McCall
-
Publication number: 20180194262Abstract: This disclosure discloses various technologies for loading, transporting, and unloading of loads, such as reels, cylinders, containers, and others.Type: ApplicationFiled: January 5, 2018Publication date: July 12, 2018Applicant: Dura-Line CorporationInventor: Timothy A. GRIMSLEY
-
Patent number: 9915380Abstract: Methods and devices related to multi-layer tubular conduit are disclosed. The method of making the multi-layer tubular conduit includes providing a hermetically sealed metal tube, inserting a thermoplastic conduit within the tube, and surrounding the exterior of the tube with an overjacket. The multi-layer tubular conduit device includes three layers: a layer of thermaplastic conduit, a layer of hermetically sealed metal tube, and a layer of overjacket. The three layers are arranged coaxially such that they share a common central axis. The method of use includes installing a multi-layer tubular conduit device in a public or non-public environment. The multi-layer tubular conduit offers mechanical protection from harsh and/or hostile environments while still offering the flexibility of traditional conduit.Type: GrantFiled: May 20, 2010Date of Patent: March 13, 2018Assignee: Dura-Line CorporationInventors: Scott Gardner, Timothy A. Grimsley
-
Patent number: 9625560Abstract: The present inventive concept includes a duct system and method for using same to map and locate ducts. A preferred embodiment of the duct system includes a duct, a plurality of electronic information modules and an oversheath at least partially covering the plurality of information modules and fixing the information modules to the duct. The plurality of information modules are configured to emit a positional signal to enable location of the information modules and associated duct(s) and/or mapping of the duct system.Type: GrantFiled: April 28, 2016Date of Patent: April 18, 2017Assignee: DURA-LINE CORPORATIONInventors: Timothy A. Grimsley, Thomas McCall
-
Publication number: 20160377503Abstract: Disclosed herein is a pipe assembly containing a pipe, an insulating jacket coupled to the pipe via an attachment base; and a tracer wire within the insulating jacket. The width of the attachment base is greater than width of the insulating jacket. Also disclosed herein are methods of locating a pipe concealed below a ground surface, and detecting the presence and the position of a leak in a pipe concealed below a ground surface.Type: ApplicationFiled: June 22, 2016Publication date: December 29, 2016Applicant: DURA-LINE CORPORATIONInventor: Timothy A. Grimsley
-
Patent number: 9383427Abstract: The present inventive concept includes a duct system and method for using same to map and locate ducts. A preferred embodiment of the duct system includes a duct, a plurality of electronic information modules and an oversheath at least partially covering the plurality of information modules and fixing the information modules to the duct. The plurality of information modules are configured to emit a positional signal to enable location of the information modules and associated duct(s) and/or mapping of the duct system.Type: GrantFiled: January 3, 2014Date of Patent: July 5, 2016Assignee: Dura-Line CorporationInventors: Timothy A Grimsley, Thomas McCall
-
Publication number: 20140191845Abstract: The present inventive concept includes a duct system and method for using same to map and locate ducts. A preferred embodiment of the duct system includes a duct, a plurality of electronic information modules and an oversheath at least partially covering the plurality of information modules and fixing the information modules to the duct. The plurality of information modules are configured to emit a positional signal to enable location of the information modules and associated duct(s) and/or mapping of the duct system.Type: ApplicationFiled: January 3, 2014Publication date: July 10, 2014Applicant: Dura-Line CorporationInventors: Timothy A Grimsley, Thomas McCall
-
Publication number: 20140191844Abstract: The present inventive concept includes a duct system and method for using same to map and locate ducts. A preferred embodiment of the duct system includes a duct, a plurality of electronic information modules and an oversheath at least partially covering the plurality of information modules and fixing the information modules to the duct. The plurality of information modules are configured to emit a positional signal to enable location of the information modules and associated duct(s) and/or mapping of the duct system.Type: ApplicationFiled: January 2, 2014Publication date: July 10, 2014Applicant: Dura-Line CorporationInventors: Timothy A. Grimsley, Thomas McCall
-
Patent number: 4892442Abstract: An innerduct is disclosed which can fit inside a preexisting conduit and extend along the length thereof or can be directly buried with a plow or in an open trench, for receiving transmission cables and, in particular, fiber optic cables. The innerduct is formed by coextruding first and second materials, the material for the inner portion of the innerduct including a lubricous material impregnated therein so that friction is reduced between the inner surface of the interduct and cables which are pulled therethrough. Ribs can be provided on the inner and outer surfaces of the innerduct of the duct can be formed with undulated walls so as to further reduce friction between same and cables slid therethrough by minimizing the surface contact between these elments. The ribs and/or undulations also faciliate the dissipation of heat due to friction of assembly, heat during the extrusion process, and from ambient sources of heat.Type: GrantFiled: March 3, 1987Date of Patent: January 9, 1990Assignee: Dura-LineInventor: John Shoffner