Patents Assigned to Spiro SA
  • Folded-seam connection, method of producing it and device
    Patent number: 7121129
    Abstract: In ventilation and air-conditioning technology, so-called spiral pipes have to be joined together in a tightly sealed manner at widely differing angles, which is generally carried out by segment bends and pipe sections. An improved, durable seal of folded-seam connections is achieved by a flange-like double fold which is arranged at a first pipe end and which is surrounded on the outside at least in part with positive locking and with a continuous metal seal, by a second double fold at the second pipe end.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: October 17, 2006
    Assignee: Spiro SA
    Inventor: Rudolf Binggeli
  • Assembly for cutting a tube
    Patent number: 6874398
    Abstract: A tube cutting assembly has a pair of opposite, rotatable cutting wheels, the outer of which is movable into engagement with a rotatable tube for cutting through the tube wall. Each cutting wheel is provided with a peripheral elastic ring which is configured to engage the tube wall and which is compressible towards the opposite cutting wheel. As a result, undesirable deformations of the cut tube end are avoided.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: April 5, 2005
    Assignee: Spiro SA
    Inventor: Rudolf Binggeli