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Patent Searching and Data


Matches 601 - 650 out of 1,134

Document Document Title
JPH0429445B2
The guide tube (16) is formed with a longitudinal slit which can be bent about a bending drum (6) of standard construction. In order to additionally introduce a longitudinal or spiral twist, a twisting element can be clamped about the tu...  
JPH0454515U  
JPH04135020A
PURPOSE: To obtain the bent products without dust and stain by operating the fluid which exists in the two spaces in the pipe divided with the core metal inserted as the carrying medium of dust and stain, generating the pressure differen...  
JPH0415370Y2  
JPH0439511U  
JPH0491823A
PURPOSE: To improve forming quality, formability and productivity in a short bent tube and to reduce the maintenance cost of a forming device by inserting a mandrel into a bent through-hole formed by combining a movable die and fixed die...  
JPH0481228A
PURPOSE: To remove the dust at the time of tube bending by forcibly feeding the fluid into the path provided at the core metal for bending from the hollow part of the holding tool. CONSTITUTION: The path (a) to remove the dust is provide...  
JPH0481229A
PURPOSE: To carry out a small curvature radius bending by setting many cut grooves in the circumferential direction on the outer circumferential part of the mandrel body made of the elastic material fittable to the inner circumferential ...  
JPH049607B2  
JPH0413432A
PURPOSE: To manufacture the metallic spiral coil pipe having high accuracy by driving mutually a take-up roller and a bending roller in the opposite directions, bending a metallic straight pipe, while guiding it by a guide groove of the ...  
JPH04730B2  
JPH03297520A
PURPOSE: To prevent the generation of the crack of pipe end and the buckling of inner pipe at the correcting time by fitting the constricting pipe inside the end part of double tube and forming on the manufacturing method for the elbow o...  
JPH03297519A
PURPOSE: To prevent the deforming of opening caused with bending by bending the material to be formed to the prescribed shape so as to be bent and deformed with the opening in a flat plane in the state of the core material of elastic mat...  
JPH0371925B2  
JPH03248719A
PURPOSE: To easily form the prescribed bent shape with high accuracy by moving the moving roll successively toward the axially longitudinal direction of the bar like member, and also moving the moving roll so as to make its locus to the ...  
JPH03238123A
PURPOSE: To press a pipe to the required radius of curvature of bend without damaging on the outer peripheral surface of the pipe specifying the surface roughness of the clamping surface of the fastening die with the mean roughness of th...  
JPH03216217A
PURPOSE: To improve the working efficiency by arranging the stopper having a hole which can pass a mandrel, and can't pass the bent pipe between a supporting stand and an exit side of a bent hole. CONSTITUTION: This mandrel 7 attached to...  
JPH03193220A
PURPOSE: To prevent the generation of wrinkles or the deformation of worked section on the case of pipe bending work by making the whole outer peripheral shape of the divided core metal components at the deformed time of the divided core...  
JPH03124321A
PURPOSE: To perform the manufacture of a pipe stock in a short time by providing stepped parts which can be engaged with the different level parts in one end part of the pipe in the pipe holding parts of a moving die and moving clamp and...  
JPH0394922A
PURPOSE: To easily execute the bending work without making the pipe flat by filling the steel ball coated with a water soluble substance, executing the bending work, after then, washing inside of the pipe, removing the coating on the ste...  
JPH0381018A
PURPOSE: To enable to a potential damage near a bend in the tube minimum by coupling a first axial line pressure device to an unrotatable device and a second axial line pressure device to a collet device and operating them to press the t...  
JPH0371928A
PURPOSE: To prevent failures and defects such as wrinkles, closings, neckings, etc., from being generated by heating a bending part and cooling a bent part at a bending time. CONSTITUTION: A rotatable tube 21 is inserted loosely into the...  
JPH0318967B2  
JPH039855Y2  
JPH0316204B2
The present invention relates to a curved pipe manufacturing method comprising the steps of: normally inserting a curved mandrel (7) into a curved cavity (4) of a fixed die (1) having an entrance opening (2) and an exit opening (3), the ...  
JPH0335821A
PURPOSE: To prevent the generation of flaw on the bending surface of pressurized contact for the work by setting the elastic supporting member elastically deformable at one part of the hard bending surface of pressurized contact of the s...  
JPH0310409B2  
JPH032328Y2  
JPH033538B2  
JPH03138B2
PURPOSE:To prevent the defect of narrowing the inner diameter of a pipe with the thickness of a cross pipe being bulged to the inner side and to uniformize the flow by using the die formed with the recess inclined so as to become deeper ...  
JPH0262089B2  
JPH0262090B2  
JPH0260413B2  
JPH0257454B2  
JPH0257455B2  
JPH0257456B2  
JPH0251725B2  
JPH02128896U  
JPH0245930B2  
JPH0237458Y2  
JPH0237457Y2  
JPH02235523A
PURPOSE: To form a tube stock without deforming its tip part by arranging a clamping mandrel capable of advancing or separating to or from the tube tip engaging with a clamping die on the side of the clamping die and advancing the clampi...  
JPH02220718A
PURPOSE: To execute bending which requires no skill, and scarcely generates an uneven metal and a fold by inserting a coil spring ito a bend part of a lead pipe, inserting a jig consisting of a special cylindrical body and a lever along ...  
JPH02207924A
PURPOSE: To bend a pipe without breaking or flattening it even in the case of a small bend radius by bringing a mandrel to stroke reciprocating motion of a small quantity, while a bending die is being turned. CONSTITUTION: A mandrel 13 i...  
JPH0236328B2  
JPH0235610B2  
JPH02142623A
PURPOSE: To drastically reduce the generation of defectives in bending and cutting off of tubes by introducing lubricating fluid from the ends of the long side tubes immediately before or before bending work is started. CONSTITUTION: In ...  
JPH0217707Y2  
JPH0217706Y2  
JPH02127927A
PURPOSE: To execute bending by a simple equipment even with respect to a metallic tube whose wall thickness is thick or whose outside diameter is large by performing the bending in a state that the outside surface part and the inside sur...  

Matches 601 - 650 out of 1,134