PLIERS - TOA INTERSYSTEM INC

Title:

PLIERS

Document Type and Number:

Japanese Patent JP2011230233

Kind Code:

A

Abstract:

To provide pliers which can automatically open jaw parts.

The pliers include a pair of handles 1A and 1B having the upper and lower jaw parts 2A and 2B, a bolt 7, and a nut 8. The pliers have the pair of handles 1A and 1B rotatably journaled using the bolt 7 and the nut 8. A spring 9 is attached to the outer periphery of the bolt 7 for journaling the handles 1A and 1B, and the respective jaw parts 2A and 2B of the pair of handles 1A and 1B are opened using a resilient urging force of the spring 9 attached to the outer periphery. Thus, since an unnecessary increase in the number of components is prevented, the cost of the priers themselves becomes low, and assembly workability is extremely improved. Furthermore, since a limitation is not imposed on a storage space for the spring 9, permanent set in fatigue, which is caused by long-term use, can also be effectively prevented by virtue of the use of the relative large spring.

Inventors:

KOUCHI MINORU
SHIMIZU MASAYUKI
KOBAYASHI SADAYOSHI
ABE KENTARO

Application Number:

JP2010102922A

Publication Date:

November 17, 2011

Filing Date:

April 28, 2010

Export Citation:

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Assignee:

TOA INTERSYSTEM INC

International Classes:

B25B7/10

Domestic Patent References:

JP2001512054A	2001-08-21
JP3073927U	2000-12-15
JPS62134665U	1987-08-25
JPS6278268U	1987-05-19
JP2001512054A	2001-08-21
JP3073927U	2000-12-15
JPS62134665U	1987-08-25
JPS6278268U	1987-05-19

Foreign References:

US6176158B1	2001-01-23
US6176158B1	2001-01-23

Attorney, Agent or Firm:

Shunichiro Ichihashi
Daichi Sanda

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