Reichhold Chemicals

Edward C Distler

Marvin Menzin

Harold B Kirkpatrick

Spool of tape and all necessary resin-forming reactant liquids are packaged in a 'one-shot', disposable container for delivery to a physician who mounts the unopened package on an activator machine which spins it in successive operational stages to first activate the reactant liquids by mixing in a mixing region of the package and then wet the tape with the activated liquid by centrifuge, subsequent centrifuging removing excess liquid, whereupon the package is opened and the spool of tape, now damp with the curing resin thereon, is removed for winding on the patient's body to form a polyurethane resin orthopedic cast which hardens within minutes in air and without additional curing procedures. Preferred reactant liquids, plasticizers, and catalysts are disclosed, which have long shelf-life within the package. Package of materials includes special container having inner container containing one reactant liquid; means for opening inner container upon mounting package on activator machine to permit its contents to mix with other reactant liquid disposed at the bottom of the outer container; paddle members for mixing the reactants responsive to intermittent spinning of the package while in a tilted position; and an interior partition configured both to provide a funnel for channeling the polymerizing liquid into a hollow core of the tape spool, and to provide a peripherally extending excess liquid collection region surrounding and extending below the tape spool.

Orthopedic cast

Package and method for preparing orthopedic cast-making materials

Machine for sequentially rotating and tilting a container having materials therein for wetting or impregnating a tape to be used for forming an orthopedic cast, the machine having a turntable rotatable about a horizontal axis, a platform on the turntable for receiving the container base and rotatable about an axis transverse to the turntable axis and a clamp on the turntable for clamping the container on the platform. The turntable is rotatable by a first motor and the platform is rotatable by a second motor mounted on the turntable. The first and second motors are sequentially energized by a motor driven timing means to (a) tilt the container from its upright position to a position 45.degree. from the vertical, (b) intermittently spin the container, (c) invert the container, (d) spin the container, (e) return the container to its upright position and (f) spin the container. To eliminate slip rings for energizing the second motor the turntable is rotated in opposite directions in steps (a) and (e) by a rack and gear drive between the first motor and the turntable.

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Warminster, PA, United States of America

Edward C Distler