Oppertus is an independant European research and development team, working since 2001 in number of fields, and now concentrated on five main projects.

The "LiToR"

Have you noticed that the red and white output shaft is always turning in the same direction?

Any idea ? electricity generation ? engines ? bicycles ? absorbers and suspension ?

Let yourself be carried away by your imagination and find the ideas of applications to which we have not yet thought.

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The Guigan Transmission
This invention is a CVT (continuous variable transmission) which, for the first time, uses gears. It also brings a very efficient feature which is that the transmission ratio varies as a function of the resistive torque.

The model of the new version is nearly finalized:

How it works

The engine rotates the planet carrier (dark blue), which makes the three "secondary planets" rotate when they are in contact with the crown sector (bright pink). These secondary planets in turn make the primary planets and the sun rotate. The movement is sent out through the aluminum shaft.

A freewheel inside the "secondary planets", combined with synchronization teeth at the begining of the crown sector, guarantees that there cannot be any teeth conflict between them and the crown sector.

Modifying the angle between the secondary crown sector (light blue and the crown sector carrier (yellow) changes the radius of the crown sector, which changes the transmission ratio continously from positive to negative, going through a "zero" position where the secondary shaft would have to stop if the crown sector carrier (yellow) itself could not be rotating. When the crown sector rotates, it drives an electric generator or any type of KERS. The crown sector may also be driven by an electric enging adding its power to the one of the main engine.

Main advantages

Althought it is pretty small and light, with a quite low cost, it has the following characteristics:
it is a continuously variable transmission;
it is compatible with high powers, because it uses teeth and not friction;
there is a whole set of continuously variable forward and reverse transmission ratios;
it also natively works as a clutch;
it also natively works as a braking system, which can be used as a very powerful kinetic energy recovery system;
the energy efficiency is very high because there is practically no friction;
it allows to combine two engines, for example a thermic engine and an electric one.

This concept also allows a very large number of other combinations.


The LI-MO Project
This very simple electric car could be the future of commuting. It provides the comfort and security of a car, while it has the same very small footprint as a scooter.

It all started with the Marland story, my first startup in the early seventies.

Popims LensPrinter SAS is a recognized innovator in printing technologies.
Specialized in the field of dynamic printing it’s teams innovated strongly to create a new way of printing baptized: selective lenticular printing.

Popims LensPrinter SAS is also marketing all software developped by Popims Software: Popims Animator, PopimsRip, and Popims MoiréGenerator

PopimsCode SAS has now finalized the development of an impossible to forge signature, the answer to the major security need felt by consumers and businesses, across new services.

Relational Identity
PopimsCard is a new project that will provide everyone an identity, at the time where one child out of five stil has none (UNESCO). This identity will be dematerialized and based not only on sovereign documents: a person's identity will be guaranteed by numerous third parties: states, communities, businesses, but also and especially friends and family members

All Oppertus technologies are protected by multi-national patents pending or delivered in number of countries.