Patents by Inventor David E. Caldwell
David E. Caldwell 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: 10428683Abstract: The present disclosure is directed to a method for in-situ cleaning one or more components of a gas turbine engine using an abrasive gel detergent. More specifically, the gel detergent includes a plurality of abrasive particles suspended in a gel composition. Further, the abrasive particles include organic material. Moreover, the gel composition is formed of a mixture of detergent particles dissolved in a gel reactant. Thus, the method includes injecting the gel detergent into at least a portion of the gas turbine engine at a predetermined pressure. In addition, the method includes allowing the gel detergent to flow across or within one or more of the components of the gas turbine engine so as to clean one or more of the components.Type: GrantFiled: January 5, 2016Date of Patent: October 1, 2019Assignee: General Electric CompanyInventors: Michael Edward Eriksen, David E. Caldwell, Nicole Jessica Tibbetts, Ambarish Jayant Kulkarni, Byron Andrew Pritchard, Jr.
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Publication number: 20170191376Abstract: The present disclosure is directed to a method for in-situ cleaning one or more components of a gas turbine engine using an abrasive gel detergent. More specifically, the gel detergent includes a plurality of abrasive particles suspended in a gel composition. Further, the abrasive particles include organic material. Moreover, the gel composition is formed of a mixture of detergent particles dissolved in a gel reactant. Thus, the method includes injecting the gel detergent into at least a portion of the gas turbine engine at a predetermined pressure. In addition, the method includes allowing the gel detergent to flow across or within one or more of the components of the gas turbine engine so as to clean one or more of the components.Type: ApplicationFiled: January 5, 2016Publication date: July 6, 2017Inventors: Michael Edward Eriksen, David E. Caldwell, Nicole Jessica Tibbetts, Ambarish Jayant Kulkarni, Byron Andrew Pritchard, JR.
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Patent number: 9135542Abstract: A method of managing inventory may include using a handheld scanning device to locate one or more inventory items on a retail display. The method may further include scanning the identification symbols of inventory items on a retail display to determine the type of the scanned item. An associated apparatus may include a communication interface to receive information from a remote database and to send information to a remote server. The received information may include predetermined information about proper locations for individual inventory items on the retail display, thereby reducing the need to manually determine the proper locations of multiple inventory items, which may be, for example, greeting cards on a retail store display.Type: GrantFiled: May 25, 2012Date of Patent: September 15, 2015Assignee: HALLMARK CARDS, INCORPORATEDInventors: Gregory S. O'Dell, Daniel R. Ferrell, David E. Caldwell
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Publication number: 20120233041Abstract: A method of managing inventory may include using a handheld scanning device to locate one or more inventory items on a retail display. The method may further include scanning the identification symbols of inventory items on a retail display to determine the type of the scanned item. An associated apparatus may include a communication interface to receive information from a remote database and to send information to a remote server. The received information may include predetermined information about proper locations for individual inventory items on the retail display, thereby reducing the need to manually determine the proper locations of multiple inventory items, which may be, for example, greeting cards on a retail store display.Type: ApplicationFiled: May 25, 2012Publication date: September 13, 2012Applicant: HALLMARK CARDS, INCORPORATEDInventors: GREGORY S. O'DELL, DANIEL R. FERRELL, DAVID E. CALDWELL
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Patent number: 8190497Abstract: A method of managing inventory may include using a handheld scanning device to locate one or more inventory items on a retail display. The method may further include scanning the identification symbols of inventory items on a retail display to determine the type of the scanned item. An associated apparatus may include a communication interface to receive information from a remote database and to send information to a remote server. The received information may include predetermined information about proper locations for individual inventory items on the retail display, thereby reducing the need to manually determine the proper locations of multiple inventory items, which may be, for example, greeting cards on a retail store display.Type: GrantFiled: June 29, 2005Date of Patent: May 29, 2012Assignee: Hallmark Cards, IncorporatedInventors: Gregory S. O'Dell, Daniel R. Ferrell, David E. Caldwell
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Patent number: 7842335Abstract: A chemical composition and method for repairing a thermal barrier coating on a component designed for use in a hostile thermal environment, such as turbine, combustor and augmentor components of a gas turbine engine. The method repairs a thermal barrier coating on a component that has suffered localized damage to the thermal barrier coating. After cleaning the surface area of the component exposed by the localized spallation, a paste-like mixture of a ceramic composition comprising ceramic powders and nano-sized ceramic materials in a binder, further including an accelerant, is applied to the surface area of the component, and is optionally smoothed using mechanical means. The composition is then allowed to dry and cure to form a dried coating having polymeric characteristics. Upon subsequent heating, the dried coating reacts to produce a glassy ceramic repair coating.Type: GrantFiled: June 29, 2005Date of Patent: November 30, 2010Assignee: General Electric CompanyInventors: Andrew Jay Skoog, Jane Ann Murphy, William Randolph Stowell, David E. Caldwell
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Patent number: 7588797Abstract: A chemical composition and method for repairing a thermal barrier coating on a component designed for use in a hostile thermal environment, such as turbine, combustor and augmentor components of a gas turbine engine. The method repairs a thermal barrier coating on a component that has suffered localized damage to the thermal barrier coating. After cleaning the surface area of the component exposed by the localized spallation, a paste-like mixture of a ceramic composition comprising ceramic powders and nano-sized ceramic materials in a binder is applied to the surface area of the component, and is optionally smoothed using mechanical means. The composition is then allowed to dry and cure to form a dried coating having polymeric characteristics. Upon subsequent heating, the dried coating reacts to produce a glassy ceramic repair coating.Type: GrantFiled: April 7, 2004Date of Patent: September 15, 2009Assignee: General Electric CompanyInventors: Andrew Jay Skoog, Jane Ann Murphy, William Randolph Stowell, David E. Caldwell
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Publication number: 20070134408Abstract: A chemical composition and method for repairing a thermal barrier coating on a component designed for use in a hostile thermal environment, such as turbine, combustor and augmentor components of a gas turbine engine. The method repairs a thermal barrier coating on a component that has suffered localized damage to the thermal barrier coating. After cleaning the surface area of the component exposed by the localized spallation, a paste-like mixture of a ceramic composition comprising ceramic powders and nano-sized ceramic materials in a binder, further including an accelerant, is applied to the surface area of the component, and is optionally smoothed using mechanical means. The composition is then allowed to dry and cure to form a dried coating having polymeric characteristics. Upon subsequent heating, the dried coating reacts to produce a glassy ceramic repair coating.Type: ApplicationFiled: June 29, 2005Publication date: June 14, 2007Applicant: GENERAL ELECTRIC COMPANYInventors: Andrew Jay Skoog, Jane Ann Murphy, William Randolph Stowell, David E. Caldwell