FIELD: hand-held cutting tools.
SUBSTANCE: group of inventions relates to a finger-grip design for cutting tools such as universal scissors and household scissors. A pair of utility scissors includes a thumb ring for accommodating the thumb and thenar of the hand in a conical space created by the thumb ring, a finger ring for accommodating one or more fingers of the hand other than the thumb, the first blade and the second blade. The first blade corresponds to the thumb ring. The second blade corresponds to the finger ring. The thenar of the hand rests against the side wall of the conical space when the thumb is fully inserted into the thumb ring. In the second embodiment, a pair of utility scissors includes the first arm, the second arm, the first blade, and the second blade. The first arm has a thumb ring at the first end of the first arm. The second lever is connected to the first lever. The second arm has a finger ring at the first end of the second arm. The first blade is connected to the first arm at the second end of the first arm. The second blade is connected to the second arm at the second end of the second arm. The thumb ring includes a flat working surface and a conical surface against which the thenar of the user's hand rests when the user's thumb is fully inserted. A pair of household scissors includes the first arm and the second arm, a finger ring, the first blade and the second blade. The first lever and the second lever are connected together at a pivot point. The thumb ring is connected to the first lever. The thumb ring has a flat working surface, a conical surface and a control surface. The finger ring is connected to the second arm to accommodate one or more fingers other than the thumb. The first blade is integrated with the first lever. The second blade is integrated with the second lever. The thenar of the user's hand rests against a flat work surface and against a conical surface when the user's thumb is fully inserted.
EFFECT: group of inventions is characterized by the fact that the thenar support provides the application of a force to the thenar muscle, which is uniformly applied to the thenar muscles and transferred to the surface of the palm of the hand to enable the thumb to determine the direction of cutting, with the application of minimal bending or gripping force as opposed to the force applied by the other fingers on said second finger grip, thereby eliminating or minimizing tension or fatigue of the thumb flexor muscles.
19 cl, 11 dwg
