Surface Combustion, Inc.

Pilkington North America, Inc.

Thomas M Lingle

Max Hoetzl

Thomas S Hicks

James A Brandewie

A seal attachment fixture and method are provided for attaching a seal to an encapsulated gasket disposed on a work piece, for example, an automotive window assembly. The seal attachment fixture includes fixture members, which slidably move into contact with openable lip portions on the gasket, thus exposing a retention slot defined therein. With the gasket retention slot open, a seal is then inserted within the slot.

Apparatus and method for attaching a seal to an encapsulated window assembly

An improved industrial furnace employing a new and unique heat transfer arrangement is disclosed. The furnace is a closed end cylindrical chamber with a circular, concentrically positioned plate dividing one side of the furnace into a fan chamber containing a fan and the other side of the furnace into a heat treat chamber containing the work. The plate has a central under-pressure opening and its outer circular edge is spaced from the cylindrical wall to define an annular space which is non-orificing. Fan rotation in the fan chamber produces an annulus of wind mass swirling at high circumferential speed which axially travels through the non-orificing space towards the closed end of the heat treat chamber at slow speed. Heating elements extend through the non-orificing space into the heat transfer chamber and are constantly impinged by the swirling annulus wind mass to effect good heat transfer therewith. The under-pressure opening causes the heated wind to contact the work before it is drawn into the under-pressure opening for recirculation. An incineration track is provided in the furnace insulation for incinerating the furnace flue products while also heating the wind mass.

Industrial furnace with improved heat transfer

An internal heat exchange tube for cooling work within an industrial furnace is positioned to extend within the furnace and is closed at its axial end which is inside the furnace. Within the tube is an open ended, thin wall inner tube formed in the shape of a helical coil. Water introduced into the inner tube distributes thermally induced, circumferential stress gradients about both tubes to prevent tube bending while achieving fast cooling of the outer tube.

Internal heat exchange tubes for industrial furnaces

Internal heat exchange tubes for inductrial furnaces

A low cost, improved convective heat transfer furnace is disclosed which includes a cylindrical casing to which is attached blanket insulation and the casing is closed at its ends to define a closed end cylindrical furnace enclosure. An annular fan face plate is positioned within the enclosure to define a pressure zone on one side and a work zone on the other side. A paddle wheel fan in the work zone develops a large mass of circumferentially swirling wind which is initially formed as a stationary swirling mass without an axial force component but which under pressure travels axially in the form of a swirling annulus through the non-orificing annular space. The under pressure zone established by the central opening in the fan face plate causes the swirling wind annulus in the work zone to expand radially inwardly and uniformly impinge the complete surface of the work in an effective heat transfer manner before being recirculated back to the pressure zone.

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Temperance, MI, United States of America

Thomas M Lingle