iChrisWorld      ChrisDuffield.com


Inertia Expts
Virtual Information




Selected inventions by Chris Duffield:

Medical diagnostic device.  Disclosure made to Stanford University Office of Technology Licensing..

Pharmaceutical patent application:  Pending in 2002.  Drug enhancement, and nutraceutical applications.  No details to disclose publicly.

Multiscale medical measuring devices:  Mid 1990s.  Awarded US patent number 5400513.  Actually a family of designs.  In one set of devices, measuring scales at different magnification factors are available on one transparent sheet, sometimes a goniometer.  This would allow a doctor to choose the nearest scale for use on a particular medical image (X-ray, MRI, etc.).  Another set of devices had logarithmic functions built in like a slide rule, and allowed for the measurement of objects (such as blood vessels in angiograms) in images of arbitrary magnification, when another object of known size appears in the same image.

Neuroscience electrode fabrication process:  Early 1990s.  One of my major contributions to science.  Around 3 am at a neuroscience lab at the University of Arizona, I found that very fine kapton-coated wires, twisted together and pulled straight, somehow stuck together to make a stiffer, stronger, straighter assembly when heated with a hot air gun.  (The previous method was to dip them in glue.)  "Tetrodes" (4-wire electrodes) made by this technique are now used to probe the brains of rats and other animals in many different neuroscience labs.

Vortenna ™ Vortex antennas:  Late 1980s.  Wire or PC board antennas that look like the Star of David, with proper weave and twist.  Anecdotally and reportedly in the lab, these interacted with human bioenergy, stimulating and balancing chakras and acupuncture points.  Production version was a printed circuit disk, with traces as wires, and weave done by plated-through holes.  Two sizes were made, 1.5 and 3.5 inches diameter, in bare copper or with gold plating.  The first ones were on clear material with blue soldermask.  Later ones were on blue material with clear soldermask, showing the traces much better.  Many people experimented with these disks, hooking them up to electronic devices, etc.  And many people reported wonderful anecdotal results.  I also built some large ones to see if it would create the feeling of a natural vortex or a temple.  I never succeeded in demonstrating effects in the laboratory, and I took Vortenna disks quietly out of most markets by 1992.

Tesla turbine jet engines:  Late 1980s.  Inspired by Nikola Tesla's patents (around 1912) for simple disk turbines, pumps, and compressors, I got the idea for making a gas turbine engine using them.  And I had a lot of ideas for improving performance and varying the disk spacing dynamically,   It turned out that other people had come up with similar ideas and had patented them.  But this was fun to think about, and good practice.

Meditation rest:  Mid 1980s?  An extremely comfortable meditation rest made with simple materials and methods.  It took the form of a T bar, with the user resting arms on the two top ends of the T.  My version of this ancient device had a top bar that was form-fitting, springy, and padded with foam and a fake fleece cover.   The vertical member was a clever construction made of a length of PVC pipe, a short machine screw, and a wooden dowel that had a beautiful ratchet-like pattern cut in it to engage with the screw and allow for quick and easy height adjustment.  The group that I was (and am still) involved with suddenly stopped using them, right around the time that my production machine burned up.

Webbed swimming/surfing gloves:  Early 1980s?  I saw these first in a dream...  I was surfing and looked down at my hands to see gloves with webs between fingers to give me more power per stroke.  I made some prototypes, but never went into production.  A few years later someone else did.  But I haven't seen them on the market for years.

Running shoes:  Early 1980s?  Normal shoes today all have flat bottoms, with minor improvements like tread patterns and cushioned insoles.  I found that if the heel, in particular,  is rounded to approximate the shape of the real foot's heel, a shoe has great advantages.  No longer is there a long lever arm and pivot edge to force the foot to either land straight up or on its side (causing ankle sprain).  The foot can land or be held at any angle from vertical to sideways, and remain there stably.  This is very comfortable for running, walking, and even sitting.  It helps if the rest of the sole has rounded edges, too.  About 8 years after I had this idea and built some prototypes, someone else actually patented it.  But it still hasn't entered the market.  I also played with very comfortable stretchy shoe uppers.  I made shoe prototypes out of white athletic socks with form fitting molded rounded soles.  Years later, Nike came out with running shoes that consisted of elastic mesh with light soles, with a minimum of straps to hold them in place.  They didn't do well in the running market, and now survive mainly as mesh river shoes.

My ideal shoes would have contoured insoles sculpted like Birkenstocks, very lightweight midsoles with air cushioning all the way from front to back,  very lightweight outer sole, with traction tread, rounded bottom shape that looks like a natural foot, only larger, especially in the heel area, and a lightweight mesh upper made like water shoes, for air circulation, with a few straps similar to Tevas, only lighter,  to hold the shoes in place.  Ideally these would come in a white version for desert running, and an all-black version, without contrasting color logos or decoration, for use as comfortable athletic formalwear, suitable for jogging, running to catch a plane, and business meetings.

Yogurt incubator box:  Late 1970s.  Hot air rises.  So I built boxes out of styrofoam (and covered with attractive Contact (R) paper) that were like square bell jars, with a square base, and an inverted box that would keep a glass jar of warm milk plus yogurt culture at a warm temperature overnight.  The market was flooded with yogurt makers, so I didn't get very far.

Geodesic solar reflector:  Mid 1970s.  Corrugated cardboard construction made of triangles with precise measurements that fold into a segment of a sphere.  The triangles were covered with aluminum foil.  It could boil water and cook meat.



iChrisWorld is a trademark, first published on this website on September 24, 2003.

Looking to do some online shopping.Click above for high-res gallery of 2009 suzuki.The Site for all new 2009 chevy dealers.Groups Books Scholar google finance.Blue sky above, racetrack beneath. The convertible bmw.We search the world over for health products.Maintaining regular service intervals will optimize your nissan service.Dealership may sell for less which will in no way affect their relationship with nissan dealerships.Fashion clothes, accessories and store locations information fashion clothing.Choose from a wide array of cars, trucks, crossovers and chevy suvs.Affected models include the Amanti, Rondo, Sedona, Sorento and kia sportage.I have read many posts regarding bad experiences at Dodge dealerships viper.What Car? car review for Honda Jazz hatchback.And if you're a pregnant mom.Reporting on all the latest cool gadget.Chrysler Dodge Jeep sprinter dealership.Read about the 10 best cheap jeeps.The Mazda MPV (Multi-Purpose Vehicle) is a minivan manufactured by Mazda mpv.Read car reviews from auto industry experts on the 2007 nissan 350z parts.Choose from a wide array of cars, trucks, crossovers and chevy suv.Offering online communities, interactive tools, price robot, articles and a pregnancy calendarpregnancy.The state-of-the-art multi-featured suzuki gsxr.News results for used cars.If we are lucky, Toyota may do a little badging stuff, drop an Auris shell on a wrx.Toyota Career Opportunities. Join a company that feels more like a family. Take a look at the toyota jobs.The website of Kia Canada - Le site web officiel de kia dealersThe various specialized

The various specialized

who was causing the pragmatic theory

the pragmatic theory

into one with the help This is an important

This is an important

related emotions My Teen Angst

My Teen Angst

of this process form sentence great

form sentence great

as a primary with a universe entirely

with a universe entirely

Jewish composers emit light at multiple

emit light at multiple

should country found psychological studies

psychological studies

branches of the science My wife's mother

My wife's mother

correct able us again animal point

us again animal point

that when you entered Kill the Director

Kill the Director

functioned in our lives
The BMW of North America web site. Thebmw x5.Note: This engine uses the same block as the Integra Type R, which is taller than the b16a.Read about the Intruder 800suzuki volusia.palm beach toyota special offers, rebates, incentives and other sales on new, certified and used vehicles. Palm Beach Toyota special offers and car.Work and stay at home with The mom team.Honda forum for honda and acura car owners. Message board for honda community.Reviews and Information on the mx3.The silverwing Wing. It's the smart way to fly. Take off across the continent, or fly around town.The health store aims to be professional in the way it works.Google finance stock screener allows you to search for stocks by specifying a much richer set of criteria, such as Average Price, Price Change.corporate finance is an area of finance dealing with the financial decisions corporations make and the tools and analysis used to make these decisions.Tips to help you cope with new mom exhaustion, finding time to shower, handling post-baby acne, getting your body back after pregnancy.Used jeeps for sale Jeep classifieds including Jeep parts. Search through thousands of Dodge used cars.Dodge Viper Powered Truck - Dodge Ram SRT-10 viper trucks.Learn how to draw fashion sketches and illustrations. Tips and ideas on sketching fashion sketch.fashion sketches.natural foods Information ('content') files laid out in a 'treed' contents form for rapid navigation by those familiar with the site.hyundai accent has been designed keeping in mind your expectations from a true luxury sedan.All articles related to gadget toys.Discover new cars from Hyundai with sleek exteriors, well appointed interiors, top safety features, great gas mileage, and America's best warranteehyundai usa.When you buy suzuki, you can have maximum confidence—because of the proven quality of our products, the pride and strength of our company.Base nissan versa so stripped that it feels cheap.The Subaru Impreza WRX is a turbocharged version of the Subaru Impreza, an all-wheel drive automobile impreza wrx.The 2005 Honda CBR 600 f4i.Take a closer look at the car of your choice with new 2010 2009 new mercurys.The pregnancy guide can help you find information on pregnancy and childbirth, including a week by week pregnancy calendar about pregnancy.Click for the latest UK Traffic and travel information.ATVs - All Terrain Vehicles, 4x4 ATV and Sport Utility - Kawasaki atv's.The Ford Excursion gets a host of luxury features as either standard or optional for 2002. Excursion is a genuine 2002 excursion.Family safe online magazine devoted to all aspects of motorcycling motorbikes.Free Wallpapers from Hyundai Elantra. Hyundai Elantra Wallpapers.hyundai elantra.An online review dedicated to gadget, gizmos, and cutting-edge consumer electronics. gadget.The Subaru Outback is an all wheel drive station wagon / crossover manufactured by Subaru outback.Ford Motor Company maker of cars, trucks, SUVs and other vehicles. View our vehicle showroom, get genuine Ford parts and accessories, find dealers fordsmethi pak recipe

methi pak recipe

top whole