Other

Jeff M Pedersen

Karen Fleckner

Yao Huang

H Sho Fuji

David S Lim

Jeremy Hergesheimer

Michael Treiber

Cynthia Buenviaje

Feng Zheng

A shower head designed to produce a consistent, wide diameter spray of water under both high and low water pressure conditions. The shower head includes a spinner tube mounted inside a cylindrical-shaped nozzle body. The upper segment of the spinner tube is held in a central location inside the nozzle body by a fixed cassette assembly. The middle and lower segments of the spinner tube extend below the cassette assembly and are bent outward and axially offset from the upper segment and from each other so that the spinner tube is able to spin freely inside the nozzle body. Mounted inside and over the upper end opening of the nozzle tube is an adapter with a longitudinally aligned threaded cavity formed on one end. The adapter includes a water orifice that delivers water from the shower head fixture tube to to the spinner tube. Disposed between the adapter and the upper end of the spinner tube is a flat washer with a narrow water orifice that delivers a narrow, high velocity stream of water to the spinner tube.

Spinner tip shower head

A novel design and process for: a) a membrane electrode assembly (MEA) with aligned carbon nanotubes as a nano-scale gas distributor which yield better gas conversion efficiencies in PEM fuel cells, and (b) doped silicon flow field plates (FFP) which increase electrode conductivity of the membrane-catalyst-gas diffusion layer (GDL)-FFP interfaces of the proton exchange membrane fuel cell (PEMFC). Also, part of the invention are a stacking configuration and a gas distribution design that also enhance conductivity of carbon/metal catalyst/electrode, GDL, and FFP interfaces surfaces without crushing the FFPs. Aligned carbon nanoscale gas distributors are employed at the interfaces, thereby increasing the overall performance of the PEMFC. The FFPs are easy to manufacture and mass-producible, yet mechanically sturdy and significantly lighter in weigh than their conventional counterparts. Another novel feature of the invention is an integrated monitoring and communication/Internet system located directly or connected to the FFP.

Fuel cells incorporating nanotubes in fuel feed

Growing community of inventors

Tacoma, WA, United States of America

Jeff M Pedersen