HOSE CONNECTION AND ASSEMBLAGE METHOD Russian patent published in 2005 - IPC

FIELD: joints with fluid cut-off means, particularly hose connections for gas or water supply systems.

SUBSTANCE: hose connection has the first and the second end sealing units. At least one sealing unit comprises gasket and nipple. Sealing nipple part adapted to sleeve connection has two or three conical annular grooves forming extensions of 0.3-0.5 mm height. Collar is of cup shape and have inner diameter D=(1.2-1.2)D₁, where D₁ is outer sleeve diameter. Method of hose connection assemblage involves prior forming collar of metal flat blank having δ thickness and d diameter by five-stage cold stamping. The first stage includes forming cylindrical member with height h₁ and inner diameter d₂. At the second stage cylindrical member with height h₂ and inner diameter d₃ is created. The third stage includes making cylindrical member with height h₃ and inner diameter d₃. At the firth stage through orifice with diameter d₁ is formed. The fifth stage involves finishing forming of the connection and shoulder trimming.

EFFECT: increased quality of hose connection and reduced time of its assemblage.

6 dwg