Bidirectional pipe bending pliers

Abstract

A pair of bidirectional pipe bending pliers comprises: a first handle and a second handle. The first handle includes a first handle portion and a first pipe-bending portion, and the second handle includes a second handle portion and a second pipe-bending portion. When the first and second pipe-bending portions are closed toward each other to carry out clamping operation, the first and third bending grooves will define a first pipe-bending path therebetween, while the second and fourth bending grooves will also define a second pipe-bending path, the first and second pipe-bending paths extend in different axial directions.

1 . A pair of bidirectional pipe bending pliers, comprising:
 a first handle including a first handle portion, a first pipe-bending portion and a first pivoting portion connected between the first handle portion and the first pipe-bending portion, the first pipe-bending portion being formed with a first bending groove and a second bending groove;   a second handle including a second handle portion, a second pipe-bending portion and a second pivoting portion connected between the second handle portion and the second pipe-bending portion, the second pipe-bending portion being formed with a third bending groove and a fourth bending groove, the second pivoting portion being pivotally connected to the first pivoting portion, so that the first and second pipe-bending portions are closed toward each other to carry out clamping operation by applying force to the first and second handle portions, when the first and second pipe-bending portions are closed toward each other to carry out clamping operation, the first and third bending grooves will define a first pipe-bending path therebetween, while the second and fourth bending grooves will also define a second pipe-bending path, the first and second pipe-bending paths extend in different axial directions.   
     
     
         2 . The pair of bidirectional pipe bending pliers as claimed in  claim 1 , wherein the first, second, third and fourth bending grooves are semicircular-shaped. 
     
     
         3 . The pair of bidirectional pipe bending pliers as claimed in  claim 1 , wherein along an inner surface of the first pipe-bending portion are formed the first and second bending grooves, the first bending groove linearly extends a predetermined distance from a bottom side surface of the first pipe-bending portion and then extends in an arc-shaped manner to a right edge of a top side surface of the first pipe-bending portion, the second bending groove extends linearly a predetermined distance from a front side surface of the first pipe-bending portion and then extends in an arc-shaped manner to a right edge of a rear side surface of the first pipe-bending portion, along an inner surface of the second pipe-bending portion are formed a third bending groove and a semicircular fourth bending groove, the third bending groove linearly extends a predetermined distance from a bottom side surface of the second pipe-bending portion and then extends in an arc-shaped manner to a left edge of a top side surface of the second pipe-bending portion, the fourth bending groove linearly extends from a front side surface a predetermined distance and then extends in an arc-shaped manner to a left edge of a rear side surface of the second pipe-bending portion. 
     
     
         4 . The pair of bidirectional pipe bending pliers as claimed in  claim 1 , wherein the first bending groove extends in a bottom-and-top direction of the first pipe-bending portion, and the second bending groove extends in a front-and-rear direction of the first pipe-bending portion, the third bending groove extends in a bottom-and-top direction of the second pipe-bending portion, while the fourth bending groove extends in a front-and-rear direction of the second pipe-bending portion. 
     
     
         5 . The pair of bidirectional pipe bending pliers as claimed in  claim 1 , wherein the third bending groove has a diameter equal to that of the first bending groove, and the fourth bending groove has a diameter larger than that of the third bending groove and equal to that of the second bending groove.