| US 7,536,791 B2 | ||
| Magnet biased work tool | ||
| Hideo Toyama, Niigata (Japan) | ||
| Assigned to Wakasaya Corporation, Sanjo-shi (Japan) | ||
| Appl. No. 10/584,329 PCT Filed Aug. 25, 2004, PCT No. PCT/JP2004/012200 § 371(c)(1), (2), (4) Date Jun. 26, 2006, PCT Pub. No. WO2005/060732, PCT Pub. Date Jul. 07, 2005. |
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| Claims priority of application No. 2003-426640 (JP), filed on Dec. 24, 2003. | ||
| Prior Publication US 2007/0144014 A1, Jun. 28, 2007 | ||
| Int. Cl. B26B 13/16 (2006.01) | ||
| U.S. Cl. 30—254 [30/29; 30/120] | 2 Claims |
| 1. A work tool comprising:
an active section formed on two pressure-nipping members, the pressure-nipping members being overlapped one on top another
and joined pivotably at respective mid-sections thereof so as to be crossed with respect to each other, the active sections
formed on distal end sides of a pivotal joint spot of the respective mid-sections for nipping or processing; and
a gripping section formed by the two pressure-nipping members on proximal end sides of the pivotal joint spot to be opened
and closed for opening and closing the active sections,
characterized in that magnets are provided respectively on the two pressure-nipping members at positions facing to each other
in the vicinity of the pivotal joint spot on a side of the gripping section so as to be repulsive when being mounted with
the same pole faced to each other,
in that a magnet is provided on one of the two pressure-nipping members so as to be capable of sliding and facing the other
pressure-nipping member with the N-pole or the S-pole directed thereto, and magnets facing the one pressure-nipping member
with the N-pole and the S-pole directed thereto respectively are provided on the other pressure-nipping member side by side,
in that the operating state in which the nipping or processing by the active section is enabled is achieved by adjusting the
sliding position of the magnet provided on the one pressure-nipping member so as to face the homopolar magnet provided on
the other pressure-nipping member to cause the magnet provided on the one pressure-nipping member and the magnet provided
on the other pressure-nipping member to be repulsive against each other, and
in that the work tool is locked in the storage state in which the magnet provided on to one pressure-nipping member and the
magnet provided on the other pressure-nipping member attract each other to close the active section by adjusting the sliding
position of the magnet provided on the one pressure-nipping member so as to face the heteropolar magnet provided on the other
pressure-nipping member.
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