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The award-winning Phase Change Matters blog tracks the latest news and research on phase change materials and thermal energy storage. E-mail tips and comments to Ben Welter, communications director at Entropy Solutions. Follow the blog on Twitter at @PureTemp. Subscribe to the weekly PCM newsletter. Or join the discussion on LinkedIn.

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Patent application: Breast prostheses with phase change material

Ben Welter - Thursday, January 04, 2018

U.S. patent application 20170367850 (applicant American Breast Care LP, Marietta, Ga.):

Breast prosthesis patent drawing"In a method of making a breast prosthesis for use by a wearer having a body temperature, a plurality of dissolvable beads is placed into an open back of a breast-shaped mold. The open back of the mold is sealed. A suspension of an uncured silicone rubber liquid [332] and a plurality of phase change material pellets [334] is injected into the mold around the beads. The uncured silicone rubber is allowed to cure, thereby forming a breast shape. The phase change material has a latent heat of fusion at a melting point so as to remove heat from the wearer when the body temperature is at least at the melting point. The breast shape is removed from the mold and the dissolvable beads are dissolved from the breast shape."

http://www.freepatentsonline.com/20170367850.pdf

Patent application: Thermal battery with encapsulated PCM

Ben Welter - Wednesday, January 03, 2018

U.S. patent application 20170370655 (applicant Valeo Systems Thermiques, Le Mesnil St. Denis, France):

"The present invention relates to a thermal battery comprising an enclosure comprising a fluid inlet and outlet and comprising within it an encapsulated phase-change material in the form of at least one tube, at least one tube being wound in a spiral within the enclosure."

http://www.freepatentsonline.com/20170370655.pdf

Patent application: Absorbent article with microencapsulated PCM

Ben Welter - Tuesday, January 02, 2018

U.S. patent application 20170360620 (applicant First Quality Retail Services, Great Neck, N.Y.):

"An absorbent article is provided with microencapsulated phase change material (microPCM) particles that are embedded in and/or coated onto a layer of the absorbent article that includes a resilient sheet of an open-cell foam. The foam layer is disposed such that it is in contact with or is in proximity to the user. The microPCM particles absorb heat generated during use of the absorbent article to reduce the contact temperature on the inside of the absorbent article and improve the comfort of the user. To maximize comfort, the phase change temperature of the microPCM particles may be an average normal body temperature."

http://www.freepatentsonline.com/20170360620.pdf

Patent application: Thermal energy storage and heat exchanger

Ben Welter - Tuesday, January 02, 2018

U.S. patent application 20170363368 (applicant EnergyNest AS, Billingstad, Norway):

"Thermal energy storage and heat exchanger, distinctive in that it comprises: a number of hardened concrete thermal energy storage elements; a housing, into which said elements have been arranged; an active heat transfer and storage medium in the volume between said elements and said housing, in the form of either: a stagnant liquid or phase change material, or a dynamic fluid arranged to flow in the volume between said elements and said housing; at least one means for delivery of thermal energy to the thermal energy storage; at least one means for taking out thermal energy from the thermal energy storage; and thermal insulation."

http://www.freepatentsonline.com/20170363368.pdf

Patent application: Beverage container and heat transfer pad

Ben Welter - Tuesday, January 02, 2018

Patent drawing of beverage container

U.S. patent application 20170360227 (applicant John Robert Mumford, Oakville, Calif.):

"A beverage container includes a base, a stem, and a bowl. The base has a base lateral dimension parallel to the horizontal supporting plane. The stem extends upwardly from a stem lower end coupled to the base to a stem upper end. The stem has a heat pipe extending between the stem lower end and the stem upper end. The stem has a stem lateral dimension smaller than the base lateral dimension. The bowl is coupled to the stem upper end and extends upwardly of the stem. The bowl defines a liquid chamber having an upper opening. ... 

"Heat sink [128] can have any configuration suitable for withdrawing heat from beverage container. In the illustrated embodiment, heat sink is formed as a coaster including a body that houses phase change material [328], and a high thermal conductivity contact plate."

http://www.freepatentsonline.com/20170360227.pdf

Patent application: Thermal management of linear motor

Ben Welter - Friday, December 15, 2017

U.S. patent application 20170355568 (applicant Otis Elevator Co., Farmington, Conn.):

"The present disclosure relates generally to a propulsion system for an elevator having a first motor portion mounted to one of an object to be moved and a stationary structure and a second motor portion mounted to the other of the object to be moved and the stationary structure, the first motor portion having at least one coil. ... The cooling member may be a heat exchanger disposed between two coils of the first motor portion. ... The heat exchanger may include a phase change material."

http://www.freepatentsonline.com/20170355568.pdf

Patent application: Heating and cooling technologies

Ben Welter - Friday, December 15, 2017

U.S. patent application 20170354190 (applicant Charles J. Cauchy, Traverse City, Mich.):

"A heating and cooling device is disclosed comprising at least one integral low voltage heating and cooling source and an efficient flexible heat distribution means having a thermal conductivity of from 375 to 4000 W/mK for distributing the heat and cool across a surface. Further aspects include thermal interface compounds to provide full thermal contact as well as the use of a phase change material to provide a long lasting heating and/or cooling effect without the use of external electrical input. Preferred applications include automotive and furniture seating heating and cooling, along with outdoor garments having distributed heating and cooling effects."

http://www.freepatentsonline.com/20170354190.pdf

Patent application: Batteries with thermal management

Ben Welter - Friday, December 15, 2017

U.S. patent application 20170358831 (applicant Pure Watercraft Inc., Seattle, Wash.):

"A battery pack assembly includes: a battery cell; a flat heat pipe, coupled to the battery cell, configured to transfer thermal energy to or from the battery cell; and a thermal electric cooler, coupled to the flat heat pipe, configured to cool the battery cell based on reducing the thermal energy through the flat heat pipe. ... The battery module can further include thermal storage units (e.g., PCM that melt and solidify at a phase change temperature; thermal energy can be absorbed or released based on the change in physical states of the materials) connected to the battery cells."

http://www.freepatentsonline.com/20170358831.pdf

Patent application: Lightweight, breathable, waterproof, soft shell composite apparel

Ben Welter - Monday, December 11, 2017

U.S. patent application 20170347730 (applicant Solid Water Holdings, Farmington, Maine):

"The apparel is constructed from various combinations of layers of materials with moisture transfer properties. A first liner of moisture transfer fabrics abuts a second layer of structural material such as open-cell foam. The second layer can abut a breathable membrane and/or an insulating material. ... The breathable moisture transfer composite system may be enhanced with Phase Change Technologies for additional thermal benefits and may be used as a single layer or composite layer in the moisture transfer system."

http://www.freepatentsonline.com/20170347730.pdf

Patent application: Lubricating composition with phase change material

Ben Welter - Monday, December 11, 2017

U.S. patent application 20170349850 (applicant Total Marketing Services, Puteaux, France):

"Disclosed is a monophasic lubricating composition including a base oil, an oil chosen from the polyalkylene glycols (PAG) and a phase-change material, in particular water. The monophasic lubricating composition can be used, in particular, for lubricating a vehicle engine. It has improved thermal performance relative to the lubricant compositions of the prior art. It also helps reduce fouling of the engine parts."

http://www.freepatentsonline.com/20170349850.pdf