A safety razor which features a pivot point that shifts from a center point pivot substantially on the shave plane, to a guard-bar pivot substantially on the shave plane, as shaving forces increase to help prevent nicks and cuts, and provide a smooth shave....http://www.google.es/patents/US7200942?utm_source=gb-gplus-sharePatente US7200942 - Safety razor with pivot point shift from center to guard-bar under applied load
Safety razor with pivot point shift from center to guard-bar under applied load
