A hand tool includes a holder and a movable head portion to which a blade body is secured. The movable head portion is supported by the holder in a manner movable relative to the holder between an accommodated state Q, in which the movable head portion is accommodated in the holder together with the...http://www.google.es/patents/US8136251?utm_source=gb-gplus-sharePatente US8136251 - Hand tool
