Other

Advanced Kinetics, Inc.

Semond Levitt

William J Covert

Guido Laporta

Harold Schoenhaus

Ray M Frey

Robert P Wolk

Robert S Miller

A continuous passive motion (CPM) device includes a foot support plate and a toe plate. The foot support plate pivots back and forth, driven by a rod connected to a motor. A toe plate pivots separately from the foot support plate, and receives its motive power solely from the foot support plate. The engagement of a pair of pins, one pin connected to the foot support plate and the other pin connected to the toe plate, causes the toe plate to pivot at the desired moment. The toe plate pivots in the opposite direction from that of the foot support plate, and pivots only when the foot support plate reaches a predetermined angle. At other times, the toe plate does not move. The latter arrangement enhances the level of comfort felt by the patient, by increasing the effective angle of flexing of the foot, while limiting the amount of flexing of the heel to a comfortable level. The positioning of the pins determines through how many degrees the toe plate pivots for each degree of rotation of the foot support plate.

Apparatus and method for imparting continuous passive motion to the foot

A perspective drafting device including a pair of straight edges pivotally connected to a centerpiece removably fixable to the horizontal arm of a drafting machine in place of the horizontal scale. Each of the straight edges is slidable through a vanishing point guide which latter is provided with a pin on its bottom surface extending substantially orthogonally to the drafting table and projectable downwardly for pivotal seating movement within a selected one of a number of holes provided in the surface of the drafting board at the left and right margins in rows spaced vertically along the drafting board. The vertical spacing of the holes selects the particular horizon desired, whereas the horizontal spacing of the holes provides horizontal rotation of the perspective view as desired. The centerpiece of the perspective device to which the straight edges are affixed is provided with a hole through which a vertical pin extending upward from the bottom edge of the table may be disposed, such hole being positioned in the centerpiece so that the center of the hole is in vertical alignment with the left-hand and/or right-hand edges of the vertical scale of the drafting machine. When the hole in the centerpiece is projected onto the fixed pin, the pin acts as a pivot so that movement of the drafting machine control knob permits pivoting rotation of the vertical scale to the left and to the right so that lines may be established from significant parts of the drawing from which it is desired to make the perspective view.

Perspective drafting apparatus

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Huntingdon Valley, PA, United States of America

Semond Levitt