International Business Machines Corporation

Other

Angelo S Gasparri

Gordon Taylor Davis

Robert H Cadwallader

Alfred A Stricker

Robert A Magee

Carole Posner

Yves Darves-Bornoz

Lawrence P Remsen

Dennis L Saylor

Edward H Faulkner

Francis A Racine

The guardrail window assembly includes a window sub-assembly movable between the floor and ceiling sections of a patio or balcony. A stationary support is mounted on the floor and includes two foreshortened vertical supports rising only partially towards the ceiling section. A crossheader frame is movably retained between the two vertical supports. The crossheader frame is generally rectangularly shaped and the sides of the crossheader carry trolleys that run in tracks provided within the stationary support. In a first position, the crosshead frame is encased by the stationary support. In a second position, the crossheader frame extends from and frames an area between the stationary support and the ceiling. That area can be open or can be screened, as necessary. A window, consisting of a window pane and a window frame, is movably retained within the crossheader frame and the stationary support. In the first and second positions, the window is disposed within the stationary support. In a third position, the window is encased by the crossheader frame and therefore closes the framed area. The guardrail window assembly also includes a motor and a pulley drive system for moving the crossheader frame and the window sequentially through the first, second and third positions with respect to the stationary support.

Guardrail window assembly with movable crossheader

Vertically displaceable green sheet support fixtures are borne by respective horizontally movable carriages traveling on common rails between respective dual loading stations and a common unloading station, through separate intermediate screening stations, with the carriages movable in opposite directions and out of phase stationwise. The carriages have fixedly coupled thereto, horizontally movable trailers which bear trays of stacked green sheets for selective transfer of the uppermost green sheet to a loading head at the loading station while the carriage borne fixture itself is at a screening station for paste screening of a prior transferred green sheet. Masks employed in screen printing at the screening station are removed from the screening station console and placed in a cleaning chamber for solvent removal of residual screening paste and are air dried prior to return to the screening station console. During cleaning of a dirty mask, a second clean mask is automatically presented at the station to eliminate throughput-loss. The fixture is vertically displaceable on the carriage and its height incrementally varied depending upon green sheet thickness variation. Accelerated vertical separation of the carriage borne green sheet from the mask is effected subsequent to initial slow incremental separation therebetween.

Automatic multilayer ceramic (MLC) screening machine

An apparatus for printing a paste pattern on a ceramic green sheet having a loading station, a printing station, a stencil mask at the printing station, a carrier for supporting a green sheet, a means to align a green sheet in a given reference position on the carrier, a means to move the carrier horizontally from the loading station to a position beneath the printing station and vertically to a position to be printed beneath the stencil mask, and back to the loading station in the reverse movement order, extruding means at the printing station to print a pattern of paste material through the stencil mask on the surface of a green sheet.

Apparatus for the printing of ceramic green sheets

Growing community of inventors

Coral Springs, FL, United States of America

Angelo S Gasparri