3m Innovative Properties Company

Other

Hamid R Mortazavi

Robert L Brott

Raymond Patrick Johnston

Charles N DeVore

Kayla A Hagens

Paul Edward Humpal

Karl J L Geisler

James F Poch

Andrew R Fox

Martin E Broen

Sean C McGreevy

Jorge C Ceballos

Michael Alan Meis

Mark Kevitt Debe

Perry S Dotterman

Michael Andrew Yandrasits

Michael K Domroese

Jiaying Ma

Stephen K Eckhardt

Wesley A Raider

Andrew J L Steinbach

Glendon D Kappel

Krzysztof A Lewinski

Thomas Herdtle

Martin J Vos

Edward M Fischer

Alexander Chieruen Tsuei

Gary William Schukar

Kayla A McGrath

Kim B Saulsbury

Timothy J Pommer

Rosemarie M Mortazavi

Michael J Raykowski

Loren E Moeri

Charles N Devore

A solid state light having a solid state light source such as LEDs, a light guide having an enclosed interior volume such as a bulb shape without vents, and a thermal guide. The light guide is coupled to the light source for receiving and distributing light from the light source. The thermal guide is at least partially contained within the interior volume with an air gap between a portion of the thermal guide and the light guide. The thermal guide provides for thermal conduction from the light source and dissipating heat through convection and radiation for cooling the light.

Solid state light with enclosed light guide and integrated thermal guide

Solid state light assembly

A solid state light having a shell forming an interior volume and with surface texture for redirecting light. A light section is coupled to the shell, and a light source board in the light section includes at least one solid state light source such as an LED. The shell, light section, and light source board have apertures for providing an air cooling channel through the light. The solid state light source transmits light into the interior volume, and the light exits from the shell and is redirected by the surface texture, providing for various light distribution curves of the light.

Solid state light with features for controlling light distribution and air cooling channels

A light with integrated light and thermal guides, and having solid state light sources such as LEDs. The light guide includes a material having a first surface and a second surface opposite the first surface and forming an interior volume. The light guide is coupled to the LEDs for receiving and distributing light from them through the first surface, and the light is transported through the light guide until the light is extracted from the first or second surface. The light guide can include alignment features such as fiducials that mate with a base. The thermal guide is contained within the interior volume and integrated with the light guide for providing thermal conduction from the LEDs for cooling the light. The thermal guide can be vented to provide for internal cross flow of air for the cooling.

Solid state light with aligned light guide and integrated vented thermal guide

Light bulb

A fuel cell assembly includes first and second compression members. Two or more membrane electrode assembly (MEA) stacks are disposed between the compression members, each MEA stack having a positive and negative end. A first current collector is electrically coupled to a positive end of a first stack of the MEA stacks. A second current collector is electrically coupled to a negative end of a second stack of the MEA stacks. A current shunt is disposed between the compression members and electrically couples the MEA stacks.

Compact fuel cell stack with current shunt

A head support system, comprising a seat cover having a front portion and a rear portion that terminate at a bottom end. The front portion comprises first and second loop padding. Headwear comprises first and second earpieces. The first and second earpieces have third and fourth loop padding thereon. Double-sided hook padding attaches onto the first and second loop padding, and the third and fourth loop padding respectively. Restraining means are used to restrain an infant or toddler's head in an upright position with comfort to the infant or toddler.

Head support system for infants and toddlers

An optical unit that includes a polarizing beamsplitter (PBS). The PBS includes a reflective polarizer that transmits a portion of a light beam that has a first polarization and reflects a portion of the light beam that has a second polarization. A light absorbing device is operatively disposed relative to the PBS. The light absorbing device receives the light either transmitted or reflected by the PBS. The light absorbing device includes a light capture portion having a structured surface.

Polarizing beamsplitter assembly

Growing community of inventors

Woodbury, MN, United States of America

Hamid R Mortazavi